On Board Diagnostic (OBD) - 2001 and Up Audi S6 C5

Technical features of the instrument cluster

The instrument cluster is controlled by a microprocessor and has extensive On Board Diagnostic (OBD) capabilities. If malfunctions occur at system components, Diagnostic Trouble Codes (DTC) are stored in DTC memory of the instrument cluster. Malfunctions can be determined via VAS 5051 tester.

Detailed information for instrument cluster and for selection menu

See Audi A6 owner's manual.

Instrument cluster with standard service reminder indicator

In countries such as the USA, in which the standard SRI is kept, the following adaptation values must be entered in function "10 Adaptation"

SRI ADAPTATION VALUES

Malfunction message "dEF" on trip odometer display

If the control module in the instrument cluster detects a malfunction in its permanent memory, the letters "dEF" will appear on the trip odometer display.

1. If "dEF" is indicated on display, replace instrument cluster

See MALFUNCTION MESSAGE "DEF" ON TRIP ODOMETER DISPLAY .

Notes for replacing instrument cluster

1. Do not disassemble instrument cluster.
2. If necessary, instrument cluster should be replaced through the exchange loop.
3. Fill out a damage report form and return together with malfunctioning instrument cluster.
4. Malfunctioning units must always be returned in original packaging.
5. The odometer and the Service Reminder Indicator (SRI) of the replacement instrument cluster can be adapted using the VAS 5051 tester. See «ADAPTATION (FUNCTION 10)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-function-10) .

Requirements

1. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Ignition switched on.

Procedure

Display on VAS 5051

Scheme 15

1. Press selection -1- of vehicle system "17 - instrument cluster" (instrument panel insert).
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 16

1. Control module identification of instrument cluster. (Scheme 17)
2. Control module identification of immobilizer. (Scheme 18)

Scheme 17

Note. In the previous graphic, for Instrument Cluster Coding, see Code Control Module (function 07) .

Scheme 18

1. Click on --> button

Display on VAS 5051

Scheme 19

1 - Selection of diagnostic functions

DIAGNOSTIC FUNCTIONS - INSTRUMENT CLUSTER

Check DTC Memory (function 02)

Note. The displayed DTC information is updated only when initiating OBD or with "Erase DTC Memory" function 05.

1. Initiate output Diagnostic Test Mode of instrument cluster. See «INSTRUMENT CLUSTER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 20

1. In selection -1-, click on the diagnostic function "02 - Check DTC Memory".

Display on VAS 5051

Scheme 21

1. DTC memory content: 0 malfunctions recognized or X malfunctions recognized
2. Diagnostic Trouble Code (DTC) DTC malfunction location malfunction type

If malfunctions were recognized

1. Print out Screen content or On Board Diagnostic (OBD) protocol: See operating instructions for the VAS 5051 tester.
2. Click on <-- button

Display on VAS 5051

Scheme 22

1. Repair malfunction(s) according to DTC table. See «DIAGNOSTIC TROUBLE CODE (DTC) TABLE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__diagnostic-trouble-code-dtc-table) .
2. In selection, click on diagnostic function "02 - Check DTC Memory" again and Erase DTC Memory. See «ERASE DTC MEMORY (FUNCTION 05)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__erase-dtc-memory-function-05) .
3. In selection, click on diagnostic function "06 - End Output". See «END OUTPUT (FUNCTION 06)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__end-output-function-06) .

If no malfunction was recognized

1. In selection -1-, click on diagnostic function "06 - End Output". See «END OUTPUT (FUNCTION 06)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__end-output-function-06) .

Diagnostic Trouble Code (DTC) table

Note. Next, all possible malfunctions that can be recognized by the instrument cluster and printed out by the VAS 5051 tester are listed according to their 5-digit numbers. DTC memory stores all static and sporadic malfunctions: If a malfunction occurs and persists for at least 2 seconds, it is identified as a static malfunction (outside temperature sensor at least 60 seconds, coolant temperature sensor only after at least 30 minutes of engine running). If a malfunction does not occur again, it is registered as sporadic. In addition, "sporadic" is indicated on display. When the ignition is switched on, all existing malfunctions are automatically re-classified as sporadic malfunctions and will only register as static malfunctions if they still occur after testing. Sporadic malfunctions which no longer occur during 50 driving cycles (ignition on at least 5 minutes, vehicle speed greater than 30 km/h) are erased automatically. Do not immediately replace components that the VAS 5051 suggests are malfunctioning, instead: Check wire connections and harness connectors to these components according to wiring diagram. Also check Ground (GND) connections according to wiring diagram. This is particularly valid when malfunctions are displayed as "sporadic". After repair and function test of the system, DTC memory must be checked again and erased.

Scheme 23

Note. In the (Scheme 23) refer to: CHECK DTC MEMORY (FUNCTION 02) for checking DTC memory of A/C system

Scheme 24

Note. In the (Scheme 25) refer to: SENDER FOR FUEL GAUGE -- ALL WHEEL DRIVE for replacing sender for fuel gauge

Scheme 25

Scheme 26

Note. In (Scheme 27) refer to: Measuring value block 140 for control module for navigation with CD-mechanism is not displayed with "1" Adaptation channel 62-Adaptation for information data-BUS for entering correct adaptation value

Scheme 27

Note. In the previous graphic refer to: Measuring value block 140 for radio control module is not displayed with "1" Adaptation channel 62-Adaptation for information data-BUS for entering correct adaptation value

Scheme 28

Note. In (Scheme 29) refer to: Measuring value block 140 for CAN capable control module is not indicated with "1" Adaptation channel 62-Adaptation for information data-BUS for entering correct adaptation value Data exchange between control modules, checking for checking data exchange

Scheme 29

Note. In (Scheme 30) refer to: Measuring value block 125 for measuring value block 125 ADAPTATION VALUES for inputting correct adaptation value

Scheme 30

Note. In (Scheme 31) refer to: Measuring value block 125 for measuring value block 125 ADAPTATION VALUES for inputting correct adaptation value

Scheme 31

Note. In (Scheme 32) refer to: Measuring value block 125 for measuring value block 125 ADAPTATION VALUES for inputting correct adaptation value

Scheme 32

Note. In (Scheme 33) refer to: Measuring value block 126 for measuring value block 126 ADAPTATION VALUES for inputting correct adaptation value

Scheme 33

Note. In (Scheme 34) refer to: Measuring value block 130 for measuring value block 130 Adaptation channel 61-Adaptation for comfort system CAN-bus for inputting the correct adaptation value Data exchange between control modules, checking for checking data exchange

Scheme 34

Note. In (Scheme 35) refer to: INSTRUMENT CLUSTER, REMOVING AND INSTALLING for replacing instrument cluster

Output Diagnostic Test Mode (DTM) (function 03)

Note. Output Diagnostic Test Mode (DTM) is only possible with engine idle and ignition switched on. If malfunctions are detected during Output Diagnostic Test Mode (DTM), determine cause of malfunction and repair.

During the "output Diagnostic Test Mode" function, the following actuators of the instrument cluster will be activated or coded (if installed)

1. Simultaneous parallel sweep through indication range of all analog display instruments (Engine Coolant Temperature (ECT) gauge, tachometer, speedometer, fuel gauge)
2. Activation of warning lamps
3. Activation of seatbelt warning light
4. Activation of chime
5. Segment test of driver information system, LCD clock/date display, and LCD trip odometer and daily odometer.
6. Test of instrument cluster lighting, including dimmer

Test requirement

1. Lighting switched on.

Test sequence

1. Initiate output Diagnostic Test Mode of instrument cluster. See «INSTRUMENT CLUSTER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 35

1. In selection -1-, click on the diagnostic function "03 - On Board Diagnostic (OBD)".

Display on VAS 5051

Scheme 36

A - 1. Actuator in test

1 - Analog indicators

The following tests are performed simultaneously

1. Sweep of coolant temperature needle through entire display range
2. Sweep of tachometer needle through entire display range
3. Sweep of speedometer needle through entire display range
4. Sweep of fuel level needle through entire display range

After sweep of display ranges, the following fixed values will be displayed

Engine Coolant Temperature (ECT) gauge: 1/2

Tachometer: 3000 1/min

Speedometer: 62 mi

Fuel gauge: 1/2

Note. Switching ignition on and off will stop any needle sweep that has started.

1. Click on --> button

Display on VAS 5051

Scheme 37

A - 2. Actuator in test

2 - Control lamp test instrument cluster

All lamps are switched on that are activated by the processor.

1. Click on --> button

Display on VAS 5051

Scheme 38

A - 3. Actuator in test

3 - Seat belt warning light -K19

Seatbelt warning light is activated.

Note. Seat belt warning light is only activated at corresponding coding of instrument cluster. If the seat belt warning light is not called up during On Board Diagnostic (OBD), the warning light is not active.

1. Click on --> button

Display on VAS 5051

Scheme 39

A - 4. Actuator in test

4 - Gong

Gong is activated and sounds in intervals.

1. Click on --> button

Display on VAS 5051

Scheme 40

A - 5. Actuator in test

5 - Segment test

All display points of the driver information display, the LCD clock/date indicator and the LCD odometer and daily odometer are activated.

1. Click on --> button

Display on VAS 5051

Scheme 41

A - 6. Actuator in test

6 - Lighting/switch and instruments

Instrument cluster illumination is automatically set twice to bright and dark and then switched to maximum illumination (bright).

1. Click on --> button

Display on VAS 5051

Scheme 42

A - Actuator test has ended

1. End function "03 - Output Diagnostic Test Mode (DIM)" by pressing <-- button.

Erase DTC Memory (function 05)

Note. If DTC memory cannot be erased, Check DTC Memory again and repair malfunction.

1. DTC memory checked. See «CHECK DTC MEMORY (FUNCTION 02)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__check-dtc-memory-function-02) .
2. All malfunctions repaired.

After successful DTC memory check

Display on VAS 5051

Scheme 43

1. In selection -1-, click on the diagnostic function "05 - Check DTC Memory".

Display on VAS 5051

Scheme 44

1. no indication (before erasing) or DTC memory erased NOTE: If indication -1- appears in display field: "DTC memory has not yet been checked", the work sequence was not adhered to correctly. DTC memory can only be erased if DTC memory was checked before.
2. Note: Perform the function? Note: Data is being erased!

1. Press on "OK"-button in display -2-.
2. End function "05 - Erase DTC Memory" by pressing on <- button.

End Output (function 06)

Display on VAS 5051

Scheme 45

1. Select diagnostic function "06 - End Output" in selection -1-.

Display on VAS 5051

Scheme 46

1. Switch off ignition and disconnect diagnostic connector after this indication is displayed.

Code Control Module (function 07)

Note. The various combination possibilities of the driver information system are adjusted via the coding according to equipment, country version, cylinder count and engine version. The code table lists only those combinations applicable to the Audi A6.

Scheme 47

INSTRUMENT CLUSTER CODE EXAMPLE

1. Initiate output Diagnostic Test Mode of instrument cluster. See «INSTRUMENT CLUSTER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 48

1. Select diagnostic function "07 - Code Control Module" in selection -1-.

Display on VAS 5051

Scheme 49

1. Enter code word Max. input value = 32767

1. Enter 5-digit coding in button field -2- according to coding table. See «CODING VERSION FOR ADDITIONAL EQUIPMENT»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__coding-version-for-additional-equipment) . If necessary, insert zeros in front.

Example

Desired input value: 2266

Keypad input: 02266

1. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 50

1. Coding will be performed

1. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 51

1. Coding in vehicle system performed
2. Control module identification with new coding (previous coding in parentheses)

1. End function "07 - Erase DTC Memory" by pressing <-- button.

Scheme 52

Note. In the previous graphic refer to: Coding version for additional equipment for coding versions ADAPTATION CHANNEL 62-ADAPTATION FOR INFORMATION DATA-BUS for selecting adaptation channel 62 in note

Coding version for additional equipment

If other additional equipment is installed in vehicle which can be coded, the first two digits of the code number must be entered as sum of the individual additional equipment-codings.

Example

1. Larger fuel tank volume (82 instead of 70 liters) and seat belt warning active 01 + 02 = 03

Read Measuring Value Block (function 08)

1. Initiate output Diagnostic Test Mode of instrument cluster. See «INSTRUMENT CLUSTER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 53

1. Select diagnostic function "08 - read measured value block" in selection -1-.

Display on VAS 5051

Scheme 54

1. Enter display group Max. input value = 255

1. Enter desired display group number in button field -2-. See «Display group overview»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 55

1. Display group X
2. Display field 1 Display field 2 Display field 3 Display field 4

Note. If no display follows, a display field is not assigned. To switch to a different display group, proceed as follows

CHANGING DISPLAY GROUP

1. Press "08 - Erase DTC Memory" to end function <-- button.

Scheme 56

Scheme 57

Scheme 58

Note. If the instrument cluster is replaced, the data from display groups 010 to 015 must be printed out. Measuring value blocks 125 and 126 indicate the components that are part of the powertrain CAN-bus. Measuring value block 130 indicates the participants in the comfort system CAN-bus. Measuring value block 140 indicates the participants in the information CAN-bus. Display will always indicate the actual values obtained from senders and sensors. The values which appear on the instrument cluster are filtered and may be different. If the actual coolant temperature is between 80 °C and 100 °C, the instrument cluster always displays 90 °C.

Scheme 59

Scheme 60

Scheme 61

Scheme 62

Note. If the value "128" in display field 2 was changed due to a customer complaint, the changed value must be transferred when replacing instrument cluster.

Scheme 63

Note. If the value "100" in display field 4 was changed due to a customer complaint, the changed value must be transferred when replacing instrument cluster.

Scheme 64

Scheme 65

See MAINTENANCE .

Scheme 66

See MAINTENANCE .

Scheme 67

See MAINTENANCE .

Note. Adaptation to the oil quality must be performed after every service.

Scheme 68

Scheme 69

Scheme 70

Scheme 71

Scheme 72

Adaptation (function 10)

Individual functions are called up by entering the appropriate adaptation channel numbers (See adaptation table. See Adaptation Table ).

Note. Using measuring value blocks 010, 011, 012 and 015, the values that need to be transferred to the new instrument cluster can be read out before replacement. Adaptation channels 42, 43, 44 and 45 (Measuring value blocks 013 see Measuring value block 013 , 014 see Measuring value block 014 and 015 see Measuring value block 015 ) must be adapted when the instrument cluster is replaced. Adaptation channels 60, 61, and 62 are only needed when the instrument cluster communicates with the corresponding BUS system. Measuring value blocks 125 and 126. See Measuring value block 125 and Measuring value block 126 . Indicate the participants in the powertrain CAN-bus. Measuring value block 130. See Measuring value block 130 . Indicates the participants in the comfort system CAN-bus. Measuring value block 140. See Measuring value block 140 . Indicates the participants in the information CAN-bus.

Adaptation Table

ADAPTATION FUNTIONS - INSTRUMENT CLUSTER

Initiating "Adaptation" function 10

1. Initiate output Diagnostic Test Mode of instrument cluster. See «INSTRUMENT CLUSTER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 73

1. In selection -1-, select the diagnostic function "10 - Adaptation".

Display on VAS 5051

Scheme 74

1. Enter channel number Max. input value = 99

1. Enter desired adaptation channel in button field -2-. See «Adaptation Table»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-table) .
2. Press -Q- button to confirm input.

Note. After changing an adaptation value or ending an adaptation channel, "10 - Adaptation" function must be selected again before selecting another adaptation channel!

Display on VAS 5051

Scheme 75

1. 1 - Channel X read and test
2. 2 - Text display of selected channel or No indication
3. 5 - The sliding bar is positioned on the current adaptation value

A - Changing adaptation value using sliding bar

Display on VAS 5051

Scheme 76

1. Move sliding bar -5- into desired direction or press on the surface beside the sliding bar, to move it in the desired direction.
2. Press "Save" button -4-.

Note. If the "Save" button is not indicated on display, only a direct input via the keypad is possible. See B - Change adaptation value via direct input .

Display on VAS 5051

Scheme 77

1. 1 - Channel X save
2. 2 - Text display of selected channel or No indication
3. 4 - original value X new value X

1. Confirm new adaptation value by pressing the "take over" button -3-.

Display on VAS 5051

Scheme 78

1. Channel X Value X stored

1. End function "10 - Adaptation" by pressing <-- button.

B - Change adaptation value via direct input

Display on VAS 5051

Scheme 79

1. Press "Keypad" button -3-.

Display on VAS 5051

Scheme 80

1. Enter adaptation value Input value: 0 to 65535

1. Enter 5-digit adaptation value in button field -2-. If necessary, insert zeros in front.

Example

Desired input value: 1

Keypad input: 00001

1. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 81

1. 1 - Channel X save
2. 2 - Text display of selected channel or No indication
3. 4 - original value X new value X

1. Confirm new adaptation value by pressing the "take over" button -3-.

Display on VAS 5051

Scheme 82

1. Channel X Value X stored

1. End function "10 - Adaptation" by pressing <-- button.

Adaptation channel 02-Resetting SRI after service

Note. The Service Reminder Indicator (SRI) is used to remind the driver when a service is necessary. Indication is in center display. Service reminder appears 1 month or 1200 miles before service limit is reached. Example for display: After a total driving distance of 7000 miles, "SERVICE IN 1000 miles" is indicated. When a service event arrives, the text information appears in the center display for 5 seconds when ignition is switched on. It is shown after the note for automatic transmission and a target input for navigation (if applicable). Display: "SERVICE!". The currently valid specifications can be found in the "Maintenance" book. See MAINTENANCE. Data version of instrument cluster. (Scheme 17) Channels 40, 41 and 45 are automatically set to "0".

Display on VAS 5051

Scheme 83

1. Enter channel number Max. input value = 99

1. Select function "02" in button field -2- for "Adaptation channel 02" and press Q button to confirm input.

Display on VAS 5051

Scheme 84

1. 1 - Channel 2 read and test
2. 2 - No indication
3. 5 - Sliding bar is positioned on "1" Service is active, i.e. "SERVICE!" is displayed in the instrument cluster.

The service event is reset using the following adaptation value

ADAPTATION VALUE

1. Change adaptation value using the sliding bar. See «A - Changing adaptation value using sliding bar»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__a-changing-adaptation-value-using) .
2. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
3. Enter adaptation value "00000".

Display on VAS 5051 after performed adaptation

Scheme 85

1. Channel 2 Value 0 stored

Note. 0 means service has been reset, i.e. "SERVICE IN 1000 MI" is displayed in instrument cluster after call-up.

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 03-Adaptation of fuel consumption display

Display on VAS 5051

Scheme 86

1. Enter channel number Max. input value = 99

1. Select function "03" in button field -2- for "Adaptation channel 03" and press Q button to confirm input.

Display on VAS 5051

Scheme 87

1. Channel 3 read and test
2. Consumption-display
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value 100

Note. Value entered must be between 85% and 115%. Value must be entered in steps of 5%. If the value "100" was changed due to a customer complaint, the changed value must be transferred when replacing instrument cluster.

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Fill empty spaces with "0".

Example

Desired input value: 90%

Keypad input: 00090

Note. The "Save" button does not appear if an incorrect value was entered!

Display on VAS 5051 after performed adaptation

Scheme 88

1. Channel 3 Value 90 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 04-Language versions of driver information system

Display on VAS 5051

Scheme 89

1. Select function "04" in button field -2- for "Adaptation channel 04" and press Q button to confirm input.

Display on VAS 5051

Scheme 90

1. 1 - Channel 4 read and test
2. 2 - Language
3. 5 - The sliding bar is positioned on the current adaptation value, e.g. 2 = English

The language version is coded via the following adaptation value

LANGUAGE VERSION CODE

1. Change adaptation value using the sliding bar. See «A - Changing adaptation value using sliding bar»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__a-changing-adaptation-value-using) .
2. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
3. Enter 5-digit adaptation value. Fill empty spaces with "0".

Example

Coding: 2 (English)

Keypad input: 00002

Display on VAS 5051 after performed adaptation

Scheme 91

1. Channel 4 Value 2 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 09 - Odometer display

This function is used to adapt the odometer after the instrument cluster is replaced.

Note. Adaptation can only be performed on an instrument with an odometer reading of no more than 100 kilometers or 100 miles. Adaptation can only be performed once for each instrument cluster. Only a larger adaptation value can be entered (more than 100 kilometers or 100 miles). If an incorrect value is entered and confirmed, it cannot be changed. If this happens, the instrument cluster must be replaced. In countries where speedometers are calibrated in miles, adaptation must also be performed in miles. When replacing instrument cluster, observe. See Input values for replacing instrument cluster .

Display on VAS 5051

Scheme 92

1. In selection -1-, select the diagnostic function "11 - Login-procedure".

Display on VAS 5051

Scheme 93

1. Enter code word Max. input value = 65535

1. Enter code number 13861 in button field -2-.
2. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 94

1. Login procedure successfully performed

1. Click on <-- button

Display on VAS 5051

Scheme 95

1. In selection -1-, select the diagnostic function "10 - Adaptation".

Display on VAS 5051

Scheme 96

1. Select function "09" in button field -2- for "Adaptation channel 09" and press Q button to confirm input.

Display on VAS 5051

Scheme 97

1. Channel 9 read and test
2. Kilometer reading in 10 km
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value

1. Press "Keypad" button -3-.

Display on VAS 5051

Scheme 98

1. Enter adaptation value Input value: 0 to 65535

1. Enter 5-digit adaptation value in button field -2- (See «Measuring value block 010»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) ).

Scheme 99

Example

Mileage reading = 8376 (x 1.61 corresponds to 13485 km)

Keypad input: 01349

1. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 100

1. 1 - Channel 9 save
2. 2 - Kilometer reading in 10 km
3. 4 - original value 0 new value 01349

1. Confirm new adaptation value by pressing the "take over" button -3-.

Display on VAS 5051

Scheme 101

1. Channel 9 Value 01349 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 18-Adaptation of auxiliary heater

Display on VAS 5051

Scheme 102

1. Select function "18" in button field -2- for "Adaptation channel 18" and press Q button to confirm input.

Display on VAS 5051

Scheme 103

1. Channel 18 read and test
2. No indication
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value, e.g. 0

The auxiliary heater is coded via the following adaptation value

AUXILIARY HEATER ADAPTION CODE

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Coding: 1 (with auxiliary heater, independent of running engine)

Keypad input: 00001

Display on VAS 5051 after performed adaptation

Scheme 104

1. Channel 18 Value 1 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 30-Adaptation of fuel gauge sender resistance range

This function is used to adjust the fuel gauge sender resistance range if the fuel gauge display in the instrument cluster does not match the actual amount of fuel in the tank.

Display on VAS 5051

Scheme 105

1. Select function "30" in button field -2- for "Adaptation channel 30" and press Q button to confirm input.

Display on VAS 5051

Scheme 106

1. Channel 30 read and test
2. Tank sensor
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value, for example, 128

Note. "128" is the adaptation value for the standard resistance range for the fuel gauge sender as set by the factory. The resistance value for the fuel gauge sender resistance range can be adjusted by +/-8 Ohm to give an adaptation value between 120 and 136. Only direct input via the keypad is possible! If the value "128" was changed due to a customer complaint, the changed value must be transferred when replacing instrument cluster.

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Desired input value: 132

Keypad input: 00132

1. Then observe impact on display.

Display on VAS 5051 after performed adaptation

Scheme 107

1. Channel 30 Value 132 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 35-Adaptation of the engine speed threshold

This function is used to adapt the offset value for the engine speed threshold to the dynamic oil pressure warning.

Display on VAS 5051

Scheme 108

1. Select function "35" in button field -2- for "Adaptation channel 35" and press Q button to confirm input.

Display on VAS 5051

Scheme 109

1. Channel 35 read and test
2. No indication
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value, e.g. 0

Note. The adaptation value of 0 corresponds to the value set at the factory for the oil pressure warning if the oil pressure drops below 1.2 bar at 1500 RPM. The adaptation can be performed in four steps (0-1000). The adaptation value of "250" changes the engine speed threshold to 1750 RPM. Only direct input via the keypad is possible! If the value "0" was changed due to a customer complaint, the changed value must be transferred to the new instrument cluster during replacement.

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Desired input value: +250 RPM

Keypad input: 00250

Display on VAS 5051 after performed adaptation

Scheme 110

1. Channel 35 Value 250 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 40-Distance driven since service

This function is used to input the distance in miles since the last service.

Display on VAS 5051

Scheme 111

1. Select function "40" in button field -2- for "Adaptation channel 40" and press Q button to confirm input.

Display on VAS 5051

Scheme 112

1. Channel 40 read and test
2. Actual value In spec. in 100 Miles
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value, e.g. 8 Distance in miles since last service is indicated (here for example 8 represents 800 miles)

Note. Input of current specified value is only possible in units of 100 miles, therefore indication in display also changes in 100 mile units. When replacing instrument cluster, observe. See Input values for replacing instrument cluster . Change adaptation value via direct input. See B - Change adaptation value via direct input . Enter 5-digit adaptation value. Insert zeros in front.

Example

Desired input value: for example, 1000 miles

Keypad input: 00010

Note. The "Save" button does not appear if an incorrect value was entered!

Display on VAS 5051 after performed adaptation

Scheme 113

1. Channel 40 Value 10 stored

1. End function "10 - Adaptation" by pressing <-- button.

Adaptation channel 41 - time since service

This function is used to input the time in days since the last service.

Display on VAS 5051

Scheme 114

1. Select function "41" in button field -2- for "Adaptation channel 41" and press Q button to confirm input.

Display on VAS 5051

Scheme 115

1. Channel 41 read and test
2. Actual value In spec. in 1 Days
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value, e.g. 110 Time in days since last service is displayed (here for example 110 represents 110 days)

Note. Input of the current specified value is only possible in units of one day, indication in display also changes by units of one day. When replacing instrument cluster, observe. See Input values for replacing instrument cluster . Change adaptation value via direct input. See B - Change adaptation value via direct input . Enter 5-digit adaptation value. Insert zeros in front.

Example

Desired input value: for example 200 days

Keypad input: 00200

Display on VAS 5051 after performed adaptation

Scheme 116

1. Channel 41

Value 200 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 42 - minimum mileage performance

This function is used to specify a fixed minimum mileage performance in the instrument cluster for the SRI.

Display on VAS 5051

Scheme 117

1. Select function "42" in button field -2- for "Adaptation channel 42" and press Q button to confirm input.

Display on VAS 5051

Scheme 118

1. Channel 42 read and test
2. Minimum value Oil in 1000 Miles
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value, e.g. 10 The minimum mileage performance up to a service will be displayed (here for example 10 represents 10000 miles).

Note. The currently valid specifications can be found in the "Maintenance" book. See MAINTENANCE . Input of current specified value is only possible in units of 1000 miles, therefore indication in display also changes in 1000 mile units.

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Specification: 10000 miles

Keypad input: 00010

Note. The "Save" button does not appear if an incorrect value was entered!

Display on VAS 5051 after performed adaptation

Scheme 119

1. Channel 42

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 43 - maximum mileage performance

This function is used to specify a fixed maximum mileage performance in the instrument cluster for the SRI.

Display on VAS 5051

Scheme 120

1. Select function "43" in button field -2- for "Adaptation channel 43" and press Q button to confirm input.

Display on VAS 5051

Scheme 121

1. Channel 43 read and test
2. Maximum value Oil in 1000 Miles
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value, e.g. 8

The maximum mileage performance up to a service will be displayed (here for example 10 represents 10000 miles).

Note. The currently valid specifications can be found in the "Maintenance" book. See MAINTENANCE . Input of current specified value is only possible in units of 1000 miles, therefore indication in display also changes in 1000 mile units.

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Specification: 10000 miles

Keypad input: 00010

Note. The "Save" button does not appear if an incorrect value was entered!

Display on VAS 5051 after performed adaptation

Scheme 122

1. Channel 43 Value 10 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 44 - maximum time interval

This function is used to set a fixed maximum time in days in the instrument cluster for the SRI.

Display on VAS 5051

1. Select function "44" in button field -2- for "Adaptation channel 44" and press Q button to confirm input.

Display on VAS 5051

Scheme 123

1. Channel 44 read and test
2. Maximum value In spec. in 1 Days
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value, e.g. 365 The display indicates the maximum time interval in days to the next service (here for example, 365 represents 365 days).

Note. The currently valid specifications can be found in the "Maintenance" book. See MAINTENANCE . Input of the current specified value is only possible in units of one day, indication in display also changes by units of one day.

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Specification: for example 365 days

Keypad input: 00365

Note. The "Save" button does not appear if an incorrect value was entered!

Display on VAS 5051 after performed adaptation

Scheme 124

1. Channel 44 Value 365 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 45 - Adaptation to oil quality

Note. The used oil must be adapted anew after every service. For USA vehicles the current adaptation value is "1". The currently valid specifications can be found in the "Maintenance" book.

See MAINTENANCE .

Display on VAS 5051

Scheme 125

1. Select function "45" in button field -2- for "Adaptation channel 45" and press Q button to confirm input.

Display on VAS 5051

Scheme 126

1. Channel 45 read and test
2. Oil-quality
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Specification: 1

Keypad input: 00001

Display on VAS 5051 after performed adaptation

Scheme 127

1. 1 - Channel 45 Value 1 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 60-Adaptation for powertrain data-BUS

Display on VAS 5051

Scheme 128

1. Select function "60" in button field -2- for "Adaptation channel 60" and press Q button to confirm input.

Display on VAS 5051

Scheme 129

1. Channel 60 read and test
2. No indication
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value

Note. The adaptation values of the table must be entered. See ADAPTATION VALUES . When replacing instrument cluster, observe. See Input values for replacing instrument cluster .

Installed control modules (addition of corresponding adaptation values) that participate in the A6 powertrain data BUS are added (See measuring value block. See Measuring value block 125 and Measuring value block 126 ).

Note. The instrument cluster, which supports CAN, is not indicated in the measuring value block, but must be added anyway.

ADAPTATION VALUES - POWERTRAIN DATA-BUS

Example: A6 with manual transmission

1. Engine + Instrument cluster = 1 + 1024 = 1025

Example: A6 with automatic transmission

1. Engine + Transmission + Instrument cluster = 1 + 2 + 1024 = 1027

Example: allroad quattro with automatic transmission

1. Engine + Transmission + Instrument cluster + Self leveling suspension = 1 + 2 + 1024 + 2048 = 3075

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Desired input value: 1025 for A6 manual transmission

Keypad input: 01025

Display on VAS 5051 after performed adaptation

Scheme 130

1. Channel 60 Value 1025 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 61-Adaptation for comfort system CAN-bus

Display on VAS 5051

Scheme 131

1. Select function "61" in button field -2- for "Adaptation channel 61" and press Q button to confirm input.

Display on VAS 5051

Scheme 132

1. Channel 61 read and test
2. No indication
3. Keypad - only direct input via the keypad is possible
4. The sliding bar is positioned on the current adaptation value

Note. The adaptation values of the table must be entered. See ADAPTATION VALUE . When replacing instrument cluster, observe. See Input values for replacing instrument cluster .

Installed control modules (addition of corresponding adaptation values) that participate in the A6 Comfort system CAN-bus are added (See measuring value block. See Measuring value block 130 ).

Note. The instrument cluster, which supports CAN, is not indicated in the measuring value block, but must be added anyway.

ADAPTATION VALUES - COMFORT SYSTEM CAN-BUS

Example: Tire pressure control

1. Instrument cluster + tire pressure =256 + 512 = 768

1. Change adaptation value via direct input. See «B - Change adaptation value via direct input»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__b-change-adaptation-value-via) .
2. Enter 5-digit adaptation value. Insert zeros in front.

Example

Desired input value: 768 with tire pressure control

Keypad input: 00768

Display on VAS 5051 after performed adaptation

Scheme 133

1. Channel 61 Value 768 stored

1. End function "10 - Adaptation" by pressing <= button.

Adaptation channel 62-Adaptation for information data-BUS

Display on VAS 5051

Scheme 134

1. Select function "62" in button field -2- for "Adaptation channel 62" and press Q button to confirm input.

Display on VAS 5051

Scheme 135

1. Channel 62
2. read and test

1. No indication
2. Keypad - only direct input via the keypad is possible
3. The sliding bar is positioned on the current adaptation value

Note. The adaptation values of the table must be entered. See M.Y. 2001 or From M.Y. 2002 . When replacing instrument cluster, observe. See Input values for replacing instrument cluster .

Installed control modules (addition of corresponding adaptation values) that participate in the A6 Comfort system CAN-bus are added (See measuring value block. See Measuring value block 140 ).

M.Y. 2001

ADAPTATION VALUES - INFORMATION DATA-BUS (2001)

From M.Y. 2002

ADAPTATION VALUES - INFORMATION DATA-BUS (2002)

Input values for replacing instrument cluster

The following must always be observed when replacing the instrument cluster

Note. Instrument cluster must always be coded. Note the values indicated in measuring value blocks 10 to 15 before replacing! Note odometer reading or input value of odometer display (in miles) in measuring value block 10 (display field 4) before replacing and enter as directed! See Measuring value block 010 . In countries where speedometers are calibrated in miles, adaptation is performed in miles. In countries where speedometers are calibrated in kilometers, adaptation is performed in kilometers.

Perform the following steps after replacing instrument cluster

1. Code instrument cluster. See «CODE CONTROL MODULE (FUNCTION 07)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__code-control-module-function-07) .

and

1. Adaptation of consumption display. See «ADAPTATION CHANNEL 03-ADAPTATION OF FUEL CONSUMPTION DISPLAY»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-03-adaptation-of-fuel-consumption) . (for changed fixed value)
2. Language versions of driver information system. See «ADAPTATION CHANNEL 04-LANGUAGE VERSIONS OF DRIVER INFORMATION SYSTEM»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-04-language-versions-of-driver) .
3. Adaptation of auxiliary heater. See «ADAPTATION CHANNEL 18-ADAPTATION OF AUXILIARY HEATER»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-18-adaptation-of-auxiliary-heater) .
4. Adaptation of fuel gauge sender characteristic curve. See «ADAPTATION CHANNEL 30-ADAPTATION OF FUEL GAUGE SENDER RESISTANCE RANGE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-30-adaptation-of-fuel-gauge) . (for changed fixed value)
5. Adaptation for distance driven since service. See «ADAPTATION CHANNEL 40-DISTANCE DRIVEN SINCE SERVICE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-40-distance-driven-since-service) .
6. Adaptation for time since service. See «ADAPTATION CHANNEL 41-TIME SINCE SERVICE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-41-time-since) .
7. Enter adaptation for oil quality. See «ADAPTATION CHANNEL 45 - ADAPTATION TO OIL QUALITY»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-45-adaptation-to) .
8. Enter adaptation for maximum mileage performance. See «ADAPTATION CHANNEL 43 - MAXIMUM MILEAGE PERFORMANCE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-43-maximum-mileage) .
9. Enter adaptation for maximum time interval. See «ADAPTATION CHANNEL 44 - MAXIMUM TIME INTERVAL»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-44-maximum-time) .
10. Enter adaptation for powertrain CAN-bus. See «ADAPTATION CHANNEL 60-ADAPTATION FOR POWERTRAIN DATA-BUS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-60-adaptation-for-powertrain-data-bus) .
11. Enter adaptation for comfort system CAN-bus. See «ADAPTATION CHANNEL 61-ADAPTATION FOR COMFORT SYSTEM CAN-BUS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-61-adaptation-for-comfort-system) .
12. Enter adaptation for powertrain CAN-bus. See «ADAPTATION CHANNEL 62-ADAPTATION FOR INFORMATION DATA-BUS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-62-adaptation-for-information-data-bus) .

and

1. Enter mileage. See «ADAPTATION CHANNEL 09 - ODOMETER DISPLAY»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-channel-09-odometer-display) .
2. Perform adaptation of immobilizer after replacing instrument cluster. See «ADAPTATION AFTER REPLACING INSTRUMENT CLUSTER»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-after-replacing-instrument-cluster) .
3. Adapt all vehicle keys. See «ADAPTATION OF VEHICLE KEYS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-of-vehicle-keys) .

Re-setting service interval display after service without VAS 5051

The service message must be reset after a service has been performed.

Re-setting the Service Reminder Indicator (SRI) can be performed with the VAG1551 Scant tool in the "adaptation" function. See ADAPTATION CHANNEL 02-RESETTING SRI AFTER SERVICE .

The SRI can also be reset via the following procedure

1. Switch ignition off.
2. Press reset button for trip odometer display in instrument cluster and hold.
3. Switch ignition on with button pressed.
4. Release button.

The following appears in display after releasing trip recorder: "SERVICE IN ????MI" or "SERVICE!"

1. Hold adjustment button for clock in instrument cluster pressed, until the message is reset to "SERVICE IN ????MI" or "SERVICE!"

The display reads: "SERVICE IN 10000 MI".

1. Switch ignition off.

Note. For re-setting without VAS 5051, service is automatically set to a fixed interval value.

RESETTING SRI INTERVAL VALUES - WITHOUT VAS 5051

Data exchange between control modules, checking

Note. Data exchange between individual control modules occurs via a bus system. The term "CAN-bus" refers to a system that transports and distributes data. The wire connections between the control modules, via which data is transferred, are referred to as data wires. Data is transferred to the connected control modules serially (one after the other) via these data wires.

Checking bus system

The DTC table indicated that data exchange via the bus should be checked

1. Check to be sure the multi-pin connectors of the control modules are securely connected.

1. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Ignition switched on.

Display on VAS 5051

Scheme 136

1. In selection -1-, press "00 - Check DTC Memory - complete system".

Note. The address word 00 initiates the automatic test sequence, i.e. it results in a DTC check on all OBD capable systems in the vehicle via rapid data transfer.

1. Wait until the next indication appears on display.

When a control module responds with its identification, the display indicates the number of stored errors or indicates "no malfunctions recognized".

1. If necessary, print out Screen content or On Board Diagnostic (OBD) protocol

See operating instructions for the VAS 5051 tester.

If a malfunction involving "... databus" or" ... no communication" is indicated

1. Check whether the correct control module for this vehicle is installed (part number and coding).

If the correct control modules are installed, check the CAN bus system.

Checking a "two-line bus system"

Three or more control modules are communicating across a "two-line bus system".

1. Analyze the DTCs stored in the memories of the control modules.

Note. This analysis will help you locate the cause of the line malfunction.

Example 1

From the DTCs stored in the memories, you have determined that control module 1 is not communicating with control modules 2 and 3.

Scheme 137

Scheme 138

1. Switch ignition off.
2. Disconnect the control modules connected across the bus wires and check the bus wires for an open circuit. See appropriate System Wiring Diagram article.
3. Replace control module 1 if no malfunctions can be found in the bus wires.

Example 2

From the DTCs stored in the memories, you have determined that control module 2 is not communicating with control modules 1 and 3.

Scheme 139

Scheme 140

1. Switch ignition off.
2. Disconnect the control modules connected across the bus wires and check the bus wires for an open circuit. See appropriate System Wiring Diagram article.
3. Replace control module 2 if no malfunctions can be found in the bus wires.

Example 3

Using the DTCs stored in the memories, you have determined that none of the control modules are sending or receiving signals.

Scheme 141

1. Switch ignition off.
2. Disconnect the control modules connected across the bus wires and check for short circuits between the bus wires. See appropriate System Wiring Diagram article.
3. Check the bus wires for short circuit to B+ or Ground (GND).

If you cannot determine a cause for the malfunction, e.g. "powertrain data-BUS malfunctioning", check whether one of the control modules may be responsible for the DTC.

All control modules that use the CAN-bus are still disconnected. Ignition is switched off.

1. Connect one of the control modules.
2. Connect VAS 5051 tester. Switch ignition on, and erase the DTC memory of the control module you just connected. End scan tool output using the "End Output" function 06.
3. Switch ignition off and then on.
4. Leave ignition on for 10 seconds. Then, read the DTC memory of the control module you just connected.
5. If the DTC "powertrain data-BUS malfunctioning" is displayed, replace the control module you just connected.
6. If the DTC "powertrain data-BUS malfunctioning" is not displayed, connect the next control module and repeat the procedure.

General information

All A6 are equipped with Immobilizer Generation III.

Generation III has the same functionality as the previous version. However, in addition to the normal data exchange between the immobilizer control module and ignition key, Gen. III includes data exchange between the immobilizer control module and Engine Control Module (ECM).

Data exchange between the Immobilizer control module and ECM takes place over the vehicle CAN-Bus network.

Note. For Immobilizer III, the Engine Control Module (ECM) is actively incorporated into the evaluation and monitoring. The control module for immobilizer is integrated into the instrument cluster. For immobilizer III, the keys are marked with an inscribed "W". The code consists of a fixed code and a variable code portion.

Function

Immobilizer III consists of

1. an adapted control module for anti-theft immobilizer (integrated in instrument cluster)
2. a warning light in instrument cluster
3. an induction coil at ignition lock
4. an adapted Engine Control Module (ECM)
5. and adapted ignition keys with electronics (transponder).

The control module for anti-theft immobilizer is integrated in the instrument cluster, e.g. if control module is malfunctioning, instrument cluster must be replaced.

See INSTRUMENT CLUSTER, REMOVING AND INSTALLING .

The anti-theft immobilizer is a system for enabling/locking the Engine Control Module (ECM) via the CAN wire.

The transponder code consists of a fixed code and a variable code. This is different for every start procedure and therefore acts as a copy protection for the transponder.

Every immobilizer contains a different computational rule for the variable code that remains the same for its entire service life. During adaptation of the vehicle key, the immobilizer writes this computational rule into the transponder and simultaneously learns the fixed code of the current key.

The fixed code identifies each individual key so that a key that is lost can be blocked from usage. Each time the ignition is switched on, the induction coil for immobilizer reads the transponder's fixed code and then the variable code and determines whether this key is authorized for vehicle start.

The warning lamp lights up briefly (max. 3 seconds) and then goes out when an authorized vehicle key is used.

When an unauthorized vehicle key is used or when a system malfunction occurs, the warning lamp blinks constantly during ignition "on".

The electronic anti-theft immobilizer is capable of extensive On Board Diagnostic (OBD). If malfunctions occur in any of the system components, corresponding Diagnostic Trouble Codes (DTC) are stored in the DTC memory of the anti-theft immobilizer. Malfunctions can be determined via VAS 5051 tester.

Note. The following description refers only to the VAS 5051 tester.

Notes for use and adaptation of vehicle key

Engine will only start when an authorized vehicle key is used, i.e. on of the keys adapted to the immobilizer.

During adaptation of the vehicle keys (See ADAPTATION OF VEHICLE KEYS ), all vehicle keys, including replacement and emergency keys, must always be adapted to the immobilizer.

If new or extra vehicle keys are required, adaptation of all vehicle keys must be performed.

If adaptation cannot be performed for all vehicle keys, e.g. key lost during a trip, the customer must be informed that adaptation must eventually be performed for any and all vehicle keys.

Especially when a key has been lost, all vehicle keys should be re-adapted, since this will render the lost key unauthorized for vehicle start.

If special testing equipment is required during road test, note the following

To reduce the risk of personal injury and/or damage of electric and electronic components, always observe the following

1. Always switch ignition off before connecting or disconnecting test/measurement tools.
2. It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary.
3. Always switch ignition off before disconnecting or connecting battery. Failure to do so may damage electronic control modules.

Test requirements

1. Fuse(s) for respective system OK See appropriate System Wiring Diagram article.
2. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
3. Ignition switched on.

Display on VAS 5051

Scheme 142

1. Press selection -1- of vehicle system "17 - instrument cluster" (instrument panel insert).

Note. Because the immobilizer is integrated in the instrument cluster, the same address word must be used as for the instrument cluster.

1. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 143

1. Control module identification of instrument cluster. (Scheme 17)
2. Control module identification of immobilizer

Scheme 144

1. Click on --> button

Display on VAS 5051

Scheme 145

1. Selection of diagnostic functions

DIAGNOSTIC FUNCTION - IMMOBILIZER

Note. The displayed DTC information is updated only when initiating OBD or with "Erase DTC Memory" function 05.

1. Initiate On Board Diagnostic (OBD) of immobilizer. See «IMMOBILIZER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 146

1. In selection -1-, click on the diagnostic function "02 - Check DTC Memory".

Display on VAS 5051

Scheme 147

1. DTC memory content: 0 malfunctions recognized or X malfunctions recognized
2. Diagnostic Trouble Code (DTC) DTC malfunction location malfunction type

If malfunctions were recognized

Scheme 148

1. Print out Screen content or On Board Diagnostic (OBD) protocol: See operating instructions for the VAS 5051 tester.
2. Click on <-- button Display on VAS 5051
3. Repair malfunction(s) according to DTC table. See «DIAGNOSTIC TROUBLE CODE (DTC) TABLE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
4. In selection -1-, press diagnostic function "02 - Check DTC Memory" again and Erase DTC Memory. See «ERASE DTC MEMORY (FUNCTION 05)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
5. In selection, click on diagnostic function "06 - End Output". See «END OUTPUT (FUNCTION 06)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

If no malfunction was recognized

1. In selection -1-, click on diagnostic function "06 - End Output". See «END OUTPUT (FUNCTION 06)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Note. Next, all possible malfunctions that can be recognized by the immobilizer and printed out by the VAS 5051 tester are listed according to their 5-digit DTC. DTCs of the instrument cluster can also be indicated, since the immobilizer is integrated in the instrument cluster. DTC memory stores all static and sporadic malfunctions: If a malfunction occurs and persists for at least 2 seconds, it is identified as a static malfunction. If a malfunction does not occur again, it is registered as sporadic. In addition, "sporadic" is indicated on display. When the ignition is switched on, all existing malfunctions are automatically re-classified as sporadic malfunctions and will only register as static malfunctions if they still occur after testing. Sporadic malfunctions which no longer occur during 50 driving cycles (ignition on at least 5 minutes, vehicle speed greater than 30 km/h) are erased automatically. Do not immediately replace components that the VAS 5051 suggests are malfunctioning, instead: Check wire connections and harness connectors to these components according to wiring diagram. Also check Ground (GND) connections according to wiring diagram. This is particularly valid when malfunctions are displayed as "sporadic". When repairing an open circuit for a CAN-bus malfunction, always be sure to prevent electromagnetic interference by twisting both data wires of the respective BUS system together. After repair, DTC memory must be checked again and erased.

DTC 01128 - IMMOBILIZER

DTC 01176 - IMMOBILIZER

DTC 01177, 01179 & 65535 - IMMOBILIZER

Note. If DTC memory cannot be erased, Check DTC Memory again and repair malfunction. DTCs are not updated after erasing DTC memory until after ignition has been switched on and off.

1. DTC memory checked. See «CHECK DTC MEMORY (FUNCTION 02)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. All malfunctions repaired.

After successful DTC memory check

Display on VAS 5051

Scheme 149

1. In selection -1-, click on the diagnostic function "05 -Check DTC Memory".

Display on VAS 5051

Scheme 150

1. no indication (before erasing) or DTC memory erased NOTE: If indication -1- appears in display field: "DTC memory has not yet been checked", the work sequence was not adhered to correctly. DTC memory can only be erased if DTC memory was checked before.
2. Note: Perform the function? Note: Data is being erased!

1. Press on "OK"-button in display -2-.
2. End function "05 - Erase DTC Memory" by pressing on <-- button.

Display on VAS 5051

Scheme 151

1. Select diagnostic function "06 - End Output" in selection -1-.

Display on VAS 5051

Scheme 152

1. Switch off ignition and disconnect diagnostic connector after this indication is displayed.

Scheme 153

1. Initiate On Board Diagnostic (OBD) of immobilizer. See «IMMOBILIZER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) . Display on VAS 5051
2. Select diagnostic function "08 - read measured value block" in selection -1-.

Display on VAS 5051

Scheme 154

1. Enter display group Max. input value = 255

1. Enter desired display group number in button field -2-. See «Display group overview»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 155

1. Display group X
2. Display field 1 Display field 2 Display field 3 Display field 4

Note. If no display follows, a display field is not assigned. To switch to a different display group, proceed as follows

SWITCHING DISPLAY GROUPS

1. Press "08 - Erase DTC Memory" to end function <-- button.

Scheme 156

Scheme 157

Note. In the previous graphic refer to: Immobilizer On Board Diagnostic (OBD), initiating for initiating On Board Diagnostic

Scheme 158

Scheme 159

Scheme 160

Using the adaptation function, the following changes can be made and saved.

1. Perform adaptation of vehicle keys. See «ADAPTATION OF VEHICLE KEYS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-of-vehicle-keys) .
2. Adaptation after replacing instrument cluster. See «ADAPTATION AFTER REPLACING INSTRUMENT CLUSTER»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-after-replacing-instrument-cluster) .
3. Adaptation after replacing Engine Control Module (ECM). See «ADAPTATION AFTER REPLACING ENGINE CONTROL MODULE (ECM)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-after-replacing-engine-control-module) .
4. Adaptation after replacing instrument cluster and Engine Control Module (ECM). See «ADAPTATION AFTER REPLACING INSTRUMENT CLUSTER AND THE ENGINE CONTROL MODULE (ECM)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-after-replacing-instrument-cluster-and) .

Adaptation of vehicle keys

Note. If new or additional ignition keys are required, they must be adapted to the anti-theft immobilizer. All ignition keys, including those that were previously authorized, must be re-adapted. Especially when a key has been lost, all vehicle keys should be re-adapted, since this will render the lost key unauthorized for vehicle start. If it is not possible to adapt all keys for some reason, i.e. during a trip, the customer must have this done later at his/her local Audi dealership. The number of adapted keys is indicated after selecting the adaptation function (channel 21) and also in measuring value block 022. Adaptation can be interrupted using the "C" button. Once a key is adapted, it is locked and cannot be adapted to another immobilizer system.

Requirement

1. All keys available. If an old ignition key is available, see "Procedure for lost key". See «LOST KEY PROCEDURE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__lost-key-procedure) .

1. Insert first key in ignition lock and switch on ignition.
2. Initiate On Board Diagnostic (OBD) of immobilizer. See «IMMOBILIZER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
3. Perform login procedure for instrument cluster. See «LOGIN PROCEDURE, INSTRUMENT CLUSTER»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__login-procedure-instrument-cluster) .

Note. Once the login procedure has been successfully completed, the warning lamp will light constantly and the immobilize will be switched free for a specific time

Display on VAS 5051

Scheme 161

1. In selection -1-, select the diagnostic function "10 - Adaptation".

Display on VAS 5051

Scheme 162

1. Enter channel number Max. input value = 99

1. Select function "21" in button field -2- for "Adaptation channel 21" and press Q button to confirm input.

Display on VAS 5051

Scheme 163

1. 1 - Channel 21 read and test
2. 2 - old number of keys
3. 5 - The sliding bar is positioned on the current adaptation value, e.g. 2 The number of ignition keys which are adapted to the system will be displayed (e.g. 2)

Note. If indication -1- appears in display field: "Function unknown or cannot be performed at the moment", repeat login-procedure and the adaptation.

1. Enter 5-digit adaptation value. Insert zeros in front.

Example

Desired input value: 4 keys (including the key which is inserted in the ignition switch; max. 8 are possible)

Keypad input: 00004

1. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 164

1. 1 - Channel 21 save
2. 2 - old number of keys
3. 4 - original value 2 new value 4

1. Confirm new adaptation value by pressing the "take over" button -3-.

Note. No single key must require more than 30 seconds during adaptation, otherwise the warning lamp will blink with a frequency of 2 Hz and adaptation must be performed again in its entirety (login procedure and adaptation).

Display on VAS 5051

Scheme 165

1. Channel 21 Value 4 stored

Warning lamp in instrument cluster goes out and key in ignition is now adapted.

1. End function "10 - Adaptation" by pressing <-- button.

Display on VAS 5051

Scheme 166

1. Select diagnostic function "06 - End Output" in selection -1-.
2. Switch ignition off.
3. Insert next key in ignition lock and switch on ignition. Warning lamp lights up when ignition is switched on and goes out after approx. one second. This key is also adapted now.
4. Repeat procedure until all keys have been adapted. After the last key, the warning light will go out approx. 2 seconds after successful adaptation and a short confirmation signal will be given (0.5 seconds light off, 0.5 seconds light on, light off).
5. During adaptation of vehicle keys, the fixed code of each key (transponder) is adapted to the immobilizer. Furthermore, the computational rule for the variable code is written into each key and locked. After that, keys can only be adapted for immobilizer III if they have the correct computational rule for the variable code (key had already been adapted to the system) or if they have not yet been locked (replacement part key). Adapted vehicle keys can not be used in conjunction with a different immobilizer system.
6. Select "Check DTC Memory", function 02. If there are no DTCs stored, then the function "Adapting keys" has been completed successfully.

Adaptation of ignition keys is automatically terminated if

1. The number of keys to be adapted has been reached.
2. The ignition is switched on using a key that is already adapted and remains switched on for more than one second (DTC stored).
3. The allotted adaptation time of 30 seconds per key, after ignition is switched on, is exceeded (DTC stored).
4. A DTC is stored during key adaptation.

Lost key procedure

1. Produce or order a replacement ignition key according to the lock number.
2. Adapt all vehicle keys. See «ADAPTATION OF VEHICLE KEYS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-of-vehicle-keys) .
3. For vehicles with radio-controlled operation, all radio keys must be adapted to the control module for central locking.

See ADAPTATION (FUNCTION 10) .

Determining the secret number (7-digit PIN)

The secret number is determined in conjunction with the 14 digit identification number of the Engine Control Module (ECM) or anti-theft immobilizer, and is read upon initiation of On Board Diagnostic (OBD).

Effective calendar date 03.11.2002, the immobilizer secret number is encoded for increased security. The encoded number is now 7-digits and is referred to as a "PIN" ("Personal Identification Number").

All models with anti-theft immobilizer are affected, regardless of generation.

The process to obtain the 7-digit PIN remains the same as with the 4-digit "secret number" previously used - that is: request via the "Warranty Information Network" (WIN). However, WIN Administration now requires additional information from both the vehicle and Dealer in order to generate the 7-digit PIN.

The PIN is only valid on the day it is requested. Thereafter, a new PIN is required.

The 7-digit PIN can only be processed and input using either the VAS 5051 or VAS 5052 with basis CD version 3.10 and higher. VAG 1551/1552 Scan Tools are unable to process or input this number.

A correct Importer/Dealer number must reside in the VAS 5051/5052 in order to request a PIN.

The requested PIN is intended for internal use only, is worthless to other Dealers and must not be shared with the customer.

Adaptation after replacing instrument cluster

Note. The instrument cluster (with integrated anti-theft immobilizer) is adapted to the Engine Control Module (ECM). If the instrument cluster is replaced, the new instrument cluster must be re-adapted to the Engine Control Module (ECM). After adapting the instrument cluster to the Engine Control Module (ECM), vehicle key adaptation must be performed. See ADAPTATION OF VEHICLE KEYS . If no authorized ignition key is available, but the 7-digit PIN is available, new ignition keys must be made and adapted to "Adaptation after replacing instrument cluster". Adaptation can be interrupted using the "C" button.

1. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Ignition switched on.

1. Insert old (authorized) ignition key into ignition lock and switch on ignition.

Display on VAS 5051

Scheme 167

1. Press selection -1- of vehicle system "01 - Engine electronics".
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 168

1. Control module identification of Engine Control Module (ECM).
2. Control module identification of immobilizer

Scheme 169

Using the 14 digit identification number of the ECM, determine the 7-digit PIN. See Determining the secret number (7-digit PIN) .

1. Click on --> button

Display on VAS 5051

Scheme 170

1. Select diagnostic function "06 - End Output" in selection -1-.

Display on VAS 5051

Scheme 171

1. Press selection -1- of vehicle system "17-instrument cluster"
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 172

1. Control module identification of the instrument cluster
2. Control module identification of immobilizer

CONTROL MODULE IDENTIFICATION, IMMOBILIZER - EXAMPLE

Replacement part instrument clusters already have a 14 digit identification number (this is necessary if instrument cluster and Engine Control Module (ECM) are being replaced simultaneously). During adaptation of the instrument cluster to the ECM, this number is transferred to the ECM.

Note. If a used or re-manufactured instrument cluster is being installed, it must first be switched free via a login procedure. See LOGIN PROCEDURE, INSTRUMENT CLUSTER . The 7-digit PIN for this must be determined via the 14-digit identification number of the used instrument cluster. Continue as follows after successful login procedure

1. Click on --> button

Display on VAS 5051

Scheme 173

1. In selection -1-, select the diagnostic function "10 - Adaptation".

Display on VAS 5051

Scheme 174

1. Enter channel number Max. input value = 99

1. Select function "50" in button field -2- for "Adaptation channel 50" and press Q button to confirm input.

Display on VAS 5051

Scheme 175

1. Channel 50 read and test
2. PIN ?
3. Keypad - only direct input via the keypad is possible
4. Sliding bar is positioned on 32000

1. Press "Keypad" button -3-.

Display on VAS 5051

Scheme 176

1. Enter adaptation value Input value: 0 to 65535

1. Enter previously determined 7-digit PIN (of Engine Control Module (ECM)) in button field -2-.
2. Press -Q- button to confirm input.

Note. If the 7-digit PIN is entered incorrectly three times, tester display will indicate "locked 10". This locking time can also be indicated in measuring value block 024 (display field 2). Adaptation is now locked for 10 minutes. This time is doubled after every third consecutive incorrect attempt, up to a maximum of 255 minutes.

1. Wait until the next indication appears on display.

Note. If a malfunction occurs during adaptation, the following DTCs can be displayed: "Interference": CAN-bus not available or engine speed recognized (adaptation only with the engine standing still).

Note. "Adaptation not OK": Engine Control Module (ECM) cannot give out data (17-digit VIN, 14-digit identification number), since the control module is still new (factory condition) or the data is faulty. "System not OK": Engine Control Module (ECM) does not give out data, since it was previously used with a control module (instrument cluster) in another performance class (tuning-protection) "Key not OK": Data cannot be given out or accepted, because no key or no matching key is available.

If no malfunction is present, this display appears

Display on VAS 5051

Scheme 177

1. 1 - Channel 50 read and test
2. 2 - 17-digit VIN (Vehicle Identification Number)
3. 5 - Sliding bar is positioned on 32000

In addition, the warning lamp in instrument cluster lights up.

1. Press "Save" button -4-.

Display on VAS 5051

Scheme 178

1. 1 - Channel 50 save
2. 2 - 17-digit VIN (Vehicle Identification Number)
3. 4 - original value 32000 new value 32000

1. Confirm new adaptation value by pressing the "take over" button -3-.

Display on VAS 5051

Scheme 179

1. Channel 50 Value 32000 stored

The warning light will go out approx. 2 seconds after successful adaptation and a short confirmation signal will be given (0.5 seconds light off, 0.5 seconds light on, light off).

1. End function "10 - Adaptation" by pressing <-- button.

Adaptation of the immobilizer to the Engine Control Module (ECM) has been completed.

1. Perform adaptation of vehicle keys. See «ADAPTATION OF VEHICLE KEYS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-of-vehicle-keys) .

Adaptation after replacing Engine Control Module (ECM)

Note. The Engine Control Module (ECM) is adapted to the instrument cluster (with integrated anti-theft immobilizer). When the Engine Control Module (ECM) is replaced, the new ECM must be re-adapted to the immobilizer. If no authorized ignition key is available, but the 7-digit PIN is available, new ignition keys must be manufactured and adapted to the "Adaptation after replacing instrument cluster". Adaptation can be interrupted using the "C" button.

1. Initiate On Board Diagnostic (OBD) of immobilizer. See «IMMOBILIZER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 180

1. Control module identification of the instrument cluster
2. Control module identification of immobilizer

Scheme 181

Using the 14 digit identification number of the ECM, determine the 7-digit PIN. See LOST KEY PROCEDURE .

1. Click on --> button

Display on VAS 5051

Scheme 182

1. Select diagnostic function "06 - End Output" in selection -1-.

Display on VAS 5051

Scheme 183

1. Press selection -1- of vehicle system "01 -Engine electronics".
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 184

1. Control module identification of Engine Control Module (ECM).
2. Control module identification of immobilizer

CONTROL MODULE IDENTIFICATION - ANTI-THEFT IMMOBILIZER

Note. If a used Engine Control Module (ECM) is being installed, it must first be switched free via a login procedure. See LOGIN PROCEDURE, ENGINE CONTROL MODULE (ECM) . The 7-digit PIN must be determined via the 14-digit identification number of the used Engine Control Module (ECM). Continue as follows after successful login procedure

1. Click on --> button

Display on VAS 5051

Scheme 185

1. In selection -1-, select the diagnostic function "10 - Adaptation".

Display on VAS 5051

Scheme 186

1. Enter channel number Max. input value = 99

1. Select function "50" in button field -2- for "Adaptation channel 50" and press Q button to confirm input.

Display on VAS 5051

Scheme 187

1. Channel 50 read and test
2. PIN ?
3. Keypad - only direct input via the keypad is possible
4. Sliding bar is positioned on 32000

1. Press "Keypad" button -3-.

Display on VAS 5051

Scheme 188

1. Enter adaptation value Input value: 0 to 65535

1. Enter previously determined 7-digit PIN (of instrument cluster) in button field -2-.
2. Press -Q- button to confirm input.

Note. If the 7-digit PIN is entered incorrectly three times, tester display will indicate "locked 10". This locking time can also be indicated in measuring value block 024 (display field 1). Adaptation is now locked for 10 minutes. This time is doubled after every third consecutive incorrect attempt, up to a maximum of 255 minutes.

1. Wait until the next indication appears on display.

Note. If a malfunction occurs during adaptation, the following DTCs can be displayed: "Interference": CAN-bus not available or engine speed recognized (adaptation only with the engine standing still) "Adaptation not OK": Instrument cluster cannot give out data (17-digit VIN, 14-digit identification number), since the control module is still new (factory condition) or the data is faulty. "System not OK": Instrument cluster does not give out data, since it was previously used with a control module (Engine Control Module) with another performance class (tuning-protection). "Key not OK": Data cannot be given out or accepted, because no key or no matching key is available.

If no malfunction is present, this display appears

Display on VAS 5051

Scheme 189

1. 1 - Channel 50 read and test
2. 2 - 17-digit VIN (Vehicle Identification Number)
3. 5 - Sliding bar is positioned on 32000

1. Press "Save" button -4-.

Display on VAS 5051

Scheme 190

1. 1 - Channel 50 save
2. 2 - 17-digit VIN (Vehicle Identification Number)
3. 4 - original value 32000 new value 32000

1. Confirm new adaptation value by pressing the "take over" button -3-.

Display on VAS 5051

Scheme 191

1. Channel 50 Value 32000 stored

1. End function "10 - Adaptation" by pressing <-- button.

Adaptation of the Engine Control Module (ECM) to the immobilizer has been completed and the vehicle can be started.

Adaptation after replacing instrument cluster and the Engine Control Module (ECM)

The computational rule for the variable code is written into the transponder and locked during adaptation of the vehicle key. After this, these vehicle keys cannot be adapted to another immobilizer. If the instrument cluster and Engine Control Module (ECM) are both replaced together, the new immobilizer in the instrument cluster receives a different computational rule for the variable code. During adaptation, this new computational rule will be written into the Engine Control Module (ECM) and into the vehicle keys where it is also locked.

1. Ignition switched on.
2. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

1. Input VIN in instrument cluster (only possible with VAS 5051 tester).
2. Perform adaptation after replacing Engine Control Module (ECM). See «ADAPTATION AFTER REPLACING ENGINE CONTROL MODULE (ECM)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-after-replacing-engine-control-module) .
3. Perform adaptation of vehicle keys. See «ADAPTATION OF VEHICLE KEYS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-of-vehicle-keys) .

Display on VAS 5051

Scheme 192

1. Press selection -1- of vehicle system "17 - instrument cluster"
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 193

1. Control module identification of the instrument cluster
2. Control module identification of immobilizer

1. Click on --> button

Display on VAS 5051

Scheme 194

1. Select diagnostic function "transfer VIN" in selection -1-.
2. Enter the vehicle's VIN and confirm.
3. Perform "Adaptation after replacing Engine Control Module (ECM)". See «ADAPTATION AFTER REPLACING ENGINE CONTROL MODULE (ECM)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-after-replacing-engine-control-module) .
4. Adapt all vehicle keys. See «ADAPTATION OF VEHICLE KEYS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__adaptation-of-vehicle-keys) .

Instrument cluster, Engine Control Module (ECM) and vehicle keys are now adapted and the vehicle can be started.

Login Procedure (function 11)

In order to perform the Login procedure, a coded "secret number" must first be determined in conjunction with the 14 digit identification number of the Engine Control Module (ECM) or anti-theft immobilizer.

ECM and immobilizer identification numbers are read upon initiation of On Board Diagnostic (OBD).

Effective calendar date 03.11.2002, the immobilizer secret number is encoded for increased security. The encoded number is now 7-digits and is referred to as a "PIN" ("Personal Identification Number").

All models with anti-theft immobilizer are affected, regardless of generation.

The process to obtain the 7-digit PIN remains the same as with the 4-digit "secret number" previously used - that is: request via the "Warranty Information Network" (WIN). However, WIN Administration now requires additional information from both the vehicle and Dealer in order to generate the 7-digit PIN.

The PIN is only valid on the day it is requested. Thereafter, a new PIN is required.

The 7-digit PIN can only be processed and input using either the VAS 5051 or VAS 5052 with basis CD version 3.10 and higher. VAG 1551/1552 Scan Tools are unable to process or input this number.

A correct Importer/Dealer number must reside in the VAS 5051/5052 in order to request a PIN.

The requested PIN is intended for internal use only, is worthless to other Dealers and must not be shared with the customer.

Login Procedure, instrument cluster

Display on VAS 5051

Scheme 195

1. Press selection -1- of vehicle system "17-instrument cluster"
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 196

1. Control module identification of the instrument cluster
2. Control module identification of immobilizer

1. Click on --> button

Display on VAS 5051

Scheme 197

1. In selection -1-, select the diagnostic function "11 - Login-procedure".

Display on VAS 5051

Scheme 198

1. Enter code word Max. input value = 65535

1. Enter previously determined 7-digit PIN (of instrument cluster) in button field -2-.
2. Press -Q- button to confirm input.

Note. After the third incorrect input of the 7-digit PIN, the control module for anti-theft immobilizer or Engine Control Module (ECM) will be locked. It is not possible to make another attempt for 10 minutes. During this time, the ignition must remain constantly switched on. On Board Diagnostic (OBD) must be exited using the "End Output" function 06. This time is doubled after every third consecutive incorrect attempt, up to a maximum of 255 minutes.

Display on VAS 5051

Scheme 199

Note. Once the login procedure has been successfully completed, the warning lamp will light constantly and the immobilizer will be switched free: as long as the engine is running and the ignition key remains inserted, for 45 minutes, as long as the ignition key remains inserted (engine not running), for 5 minutes, if ignition key is removed.

Note. If indication -1- appears in display field: "Function unknown or cannot be performed at this moment", the 7-digit PIN was entered incorrectly (e.g. incorrect secret code)

Scheme 200

Login Procedure, Engine Control Module (ECM)

Display on VAS 5051

Scheme 201

1. Press selection -1- of vehicle system "01 -Engine electronics".
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 202

1. Control module identification of Engine Control Module (ECM).
2. Control module identification of immobilizer

1. Click on --> button

Display on VAS 5051

Scheme 203

1. In selection -1-, select the diagnostic function "11 - Login-procedure".

Display on VAS 5051

Scheme 204

1. Enter code word Max. input value = 65535

1. Enter 7-digit PIN (of Engine Control Module (ECM)) in button field -2-.
2. Press -Q- button to confirm input.

Note. After the third incorrect input of the 7-digit PIN, the control module for anti-theft immobilizer or Engine Control Module (ECM) will be locked. It is not possible to make another attempt for 10 minutes. During this time, the ignition must remain constantly switched on. On Board Diagnostic (OBD) must be exited using the "End Output" function 06. This time is doubled after every third consecutive incorrect attempt, up to a maximum of 255 minutes.

Display on VAS 5051

Scheme 205

The Engine Control Module (ECM) is now switched free.

Note. If indication -1- appears in display field: "Function unknown or cannot be performed at this moment", the 7-digit PIN was entered incorrectly (e.g. incorrect secret code)

Scheme 206

For vehicles with gasoline engines and electronic engine power regulation (E-gas) the cruise control system does not have any individual components except for the operation switch and all functions are performed by the Engine Control Module (ECM).

Safety precautions

If special testing equipment is required during road test, note the following

1. Always switch ignition off before connecting or disconnecting test/measurement tools.
2. It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary.
3. Always switch ignition off before disconnecting or connecting battery. Failure to do so may damage electronic control modules.

1. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Engine running at idle

Initiating "Read Measuring Value Block"

Display on VAS 5051

Scheme 207

1. Press selection -1- of vehicle system "01 -Engine electronics".
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 208

1. Control module identification of Engine Control Module (ECM).
2. Control module identification of immobilizer

1. Click on --> button

Display on VAS 5051

Scheme 209

1. Select diagnostic function "08 - read measured value block" in selection -1-.

Display on VAS 5051

Scheme 210

1. Enter display group Max. input value = 255

1. Select function "066" in button field -2- for "Display group number 066" and press Q button to confirm input.

Display on VAS 5051

Scheme 211

1. Display group 66
2. Display field 1 Display field 2 Display field 3 Display field 4

Note. If no display follows, a display field is not assigned.

Note. For vehicles with automatic transmission, the voltage supply for the cruise control switch is not switched on until a speed of above 30 km/h is reached with selector lever in position -2-, -3- or -D-. The voltage supply will then be maintained at idle, as long as a driving mode (aside from -1- or -R-) is selected. Road test vehicle and exceed 30 km at least once. Do not switch off engine upon completion. Leave selector lever in -2-, -3- or -D-. Engage parking brake.

For 4-digit indication in display field 2 and 4

1. Check indication in display field 2.

Scheme 212

Note. In the previous graphic refer to: CRUISE CONTROL SYSTEM, ACTIVATING for activating cruise control system

1. Check indication in display field 4.

Scheme 213

Scheme 214

If specified values are not obtained

1. Check wire connections. See «CHECKING WIRE CONNECTIONS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__checking-wire-connections) .

For 8-digit indication in display field 2 and 4

1. Check indication in display field 2.

Scheme 215

Note. In the previous graphic refer to: CRUISE CONTROL SYSTEM, ACTIVATING for activating cruise control system

1. Check indication in display field 4.

Scheme 216

Scheme 217

If specified values are not obtained

1. Check wire connections. See «CHECKING WIRE CONNECTIONS»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__checking-wire-connections) .

Checking wire connections

1. Disconnect harness connector at cruise control switch: See «COMPONENT LOCATIONS, OVERVIEW»(/audi/s6/c5-1999-2004/remont/exteriorinterior-trim/#interior-trim) .
2. Connect VAG1598/31 test box to disconnected harn connector of Engine Control Module (ECM). See «WIRE AND COMPONENT TEST USING VAG1598/31 TEST BOX»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__wire-and-component-test-using-vag159831) .
3. Check the following wire connections for open circuit short circuit to Ground (GND) and B+

Scheme 218

CRUISE CONTROL WIRING: TERMINAL & SOCKET SPECIFICATIONS

1. Repair open circuit or short circuit if necessary.

Wire and component test using VAG1598/31 test box

Note. Always use VAG1594A connector test kit to attach measurement devices (e.g. VAG1527B voltage tester, VAG1526 multimeter etc.). The terminal numbers on the connector correspond socket numbers on the test box.

1. Switch ignition off.
2. Pull off rubber seal of plenum chamber cover in direct arrow.
3. Remove cover -1- toward front.
4. Remove E-box cover (arrows).
5. Using a screwdriver, carefully pry off retaining bracket (arrow).
6. Disengage connector catches (arrows) and disconnect harness connectors -1- and -2- from control module.
7. Connect VAG1598/31 test box to disconnected harness connector of Engine Control Module (ECM) (control module remains free). Ground (GND) clip at test box (not visible in illustration) must be connected to Ground (GND).

Scheme 219

1. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Ignition switched on.

Display on VAS 5051

Scheme 220

1. Press selection -1- of vehicle system "01 - Engine electronics".
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 221

1. Control module identification of Engine Control Module (ECM).
2. Control module identification of immobilizer

1. Click on --> button

Display on VAS 5051

Scheme 222

1. In selection -1-, select the diagnostic function "11 - Login-procedure".

Display on VAS 5051

Scheme 223

1. Enter code word Max. input value = 65535

1. Select code number 11463 in button field -2- and press Q button to confirm input.

Display on VAS 5051

Scheme 224

1. Select diagnostic function "06 - End Output" in selection -1-.

1. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Ignition switched on.

Display on VAS 5051

Scheme 225

1. Press selection -1- of vehicle system "01 -Engine electronics".
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 226

1. Control module identification of Engine Control Module (ECM).
2. Control module identification of immobilizer

1. Click on --> button

Display on VAS 5051

Scheme 227

1. In selection -1-, select the diagnostic function "11 - Login-procedure".

Display on VAS 5051

Scheme 228

1. Enter code word Max. input value = 65535

1. Select code number 16167 in button field -2- and press Q button to confirm input.

Display on VAS 5051

Scheme 229

1. Select diagnostic function "06 - End Output" in selection -1-.

Different parking assistance systems are installed in Audi A6 models

1. The 4-channel parking assistance with 4 ultra-sound sensor in rear bumper
2. The 8-channel parking assistance with 4 ultra-sound sensors (each) in rear bumper and front bumper

The parking assistance system monitors the vehicle environment via the ultra-sound sensors in front bumper and in rear bumper. The acoustic distance notification is performed via one or two sound sensors in vehicle interior.

The rear sensors are switched off if a trailer hitch is attached and the trailer plug is connected. The front sensors remain active.

The gap warning starts during reverse or forward driving (acoustic parking system active) at

1. less than approx. 60 cm on all side sensors
2. less than approx. 120 cm for front-center sensors
3. less than approx. 150 cm for rear-center sensors

The 4-channel parking assistance consists of

1. Control module for parking aid -J446
2. Left rear parking aid sensor -G203
3. Left rear center parking aid sensor -G204
4. Right rear center parking aid sensor -G205
5. Right rear parking aid sensor -G206
6. Warning buzzer for parking -H15

The 8-channel parking assistance has an additional

1. Left front parking aid sensor -G255
2. Right front parking aid sensor -G252
3. Right front center parking aid sensor -G253
4. Left front center parking aid sensor -G254
5. Front parking aid warning buzzer -H22
6. Switch for parking assistance with integrated function lamp (LED)

After switching ignition on, a self-test is performed that is completed in less than a second. The control module is now permanently in operation, but gap recognition is only activated once reverse gear is engaged or can be activated/deactivated with the switch for parking assistance.

When parking assistance is ready, a short signal is sounded (delay of one second for automatic vehicles due to P-D shift) and the function lamp in the switch lights up. If a malfunction is detected in the system, a constant signal sounds for 5 seconds and the function lamp in the switch for parking assistance blinks.

The pauses between chime impulses get shorter as the gap between vehicles gets smaller. For gaps under 25 cm, the chime becomes constant. (Adaptation of volume and pitch (frequency). See ADAPTATION TABLE )

Special case: Driving along a wall

If special testing equipment is required during road test, note the following

1. Always switch ignition off before connecting or disconnecting test/measurement tools.
2. It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary.
3. Always switch ignition off before disconnecting or connecting battery. Failure to do so may damage electronic control modules.

1. Fuse(s) for respective system OK
2. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
3. Ignition switched on.

Display on VAS 5051

Scheme 230

1. Press vehicle system "76 parking assistance" in selection -1-.
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 231

1. Control module identification of control module

Scheme 232

Note. In the previous graphic refer to: Code Control Module (function 07) for control module coding

1. Click on --> button

Display on VAS 5051

1. Selection of diagnostic functions

Scheme 233

PARKING ASSISTANCE DIAGNOSTIC FUNCTIONS

Note. The displayed DTC information is updated only when initiating OBD or with "Erase DTC Memory" function 05.

1. Initiate On Board Diagnostic (OBD) of parking assistance. See «PARKING ASSISTANCE ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 234

1. In selection -1-, click on the diagnostic function "02 -Check DTC Memory".

Display on VAS 5051

Scheme 235

1. DTC memory content: 0 malfunctions recognized or X malfunctions recognized
2. Diagnostic Trouble Code (DTC) DTC malfunction location malfunction type

If malfunctions were recognized

1. Print out Screen content or On Board Diagnostic (OBD) protocol: See operating instructions for the VAS 5051 tester.
2. Click on <-- button

Display on VAS 5051

Scheme 236

1. Repair malfunction(s) according to DTC table. See «DIAGNOSTIC TROUBLE CODE (DTC) TABLE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. In selection, click on diagnostic function "02 - Check DTC Memory" again and Erase DTC Memory. See «ERASE DTC MEMORY (FUNCTION 05)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
3. In selection, click on diagnostic function "06 - End Output". See «END OUTPUT (FUNCTION 06)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

If no malfunction was recognized

1. In selection -1-, click on diagnostic function "06 - End Output". See «END OUTPUT (FUNCTION 06)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Note. Next, all possible malfunctions that can be recognized by the parking assistance and printed out by the VAS 5051 tester are listed by their 5-digit DTC. DTC memory stores all static and sporadic malfunctions: If a malfunction occurs and persists for at least 2 seconds, it is identified as a static malfunction. If a malfunction does not occur again, it is registered as sporadic. In addition, "sporadic" is indicated on display. When the ignition is switched on, all existing malfunctions are automatically re-classified as sporadic malfunctions and will only register as static malfunctions if they still occur after testing. Sporadic malfunctions which no longer occur during 50 driving cycles (ignition on at least 5 minutes, vehicle speed greater than 30 km/h) are erased automatically. Do not immediately replace components that the VAS 5051 suggests are malfunctioning, instead: Check wire connections and harness connectors to these components according to wiring diagram. Also check Ground (GND) connections according to wiring diagram. This is particularly valid when malfunctions are displayed as "sporadic". After repair, DTC memory must be checked again and erased.

Scheme 237

Scheme 238

Scheme 239

Scheme 240

Scheme 241

Scheme 242

Scheme 243

Scheme 244

Note. Output Diagnostic Test Mode (DTM) is only possible with engine idle and ignition switched on. If malfunctions are detected during Output Diagnostic Test Mode (DTM), determine cause of malfunction and repair.

1. Initiate On Board Diagnostic (OBD) of parking assistance. See «PARKING ASSISTANCE ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 245

1. In selection -1-, click on the diagnostic function "03 - On Board Diagnostic (OBD)".

Display on VAS 5051

Scheme 246

A - 1. Actuator in test

1 - Warning buzzer for parking -H15

Warning buzzer for parking assistance is being activated sounds in intervals.

1. Click on --> button

Display on VAS 5051

Scheme 247

A-Actuator test has ended

1. End function "03 - Output Diagnostic Test Mode (DTM)" by pressing <-- button.

Note. If DTC memory cannot be erased, Check DTC Memory again and repair malfunction.

1. DTC memory checked. See «CHECK DTC MEMORY (FUNCTION 02)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. All malfunctions repaired.

After successful DTC memory check

Display on VAS 5051

Scheme 248

1. In selection -1-, click on the diagnostic function "05- Check DTC Memory".

Display on VAS 5051

Scheme 249

1. no indication (before erasing) or DTC memory erased NOTE: If indication -1- appears in display field: "DTC memory has not yet been checked", the work sequence was not adhered to correctly. DTC memory can only be erased if DTC memory was checked before.
2. Note: Perform the function? Note: Data is being erased !

1. Press on "OK"-button in display -2-.
2. End function "05 - Erase DTC Memory" by pressing on <-- button.

Display on VAS 5051

Scheme 250

1. Select diagnostic function "06 - End Output" in selection -1-.

Display on VAS 5051

Scheme 251

1. Switch off ignition and disconnect diagnostic connector after this indication is displayed.

Using this function, the control module for parking aid can be coded as follows

1. Transmission type: Manual shifting or automatic
2. Signal for reverse gear engaged With or without func handshake
3. Chassis type Sedan or Avant
4. Vehicle model: e.g. Audi A6

Note. Via coding, the universally undifferentiated control module for parking aid -J446- can be specifically adjusted to the demands of the vehicle at hand.

1. Initiate On Board Diagnostic (OBD) of parking assistance. See «PARKING ASSISTANCE ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 252

1. Select diagnostic function "07 - Code Control Module" in selection -1-.

Display on VAS 5051

Scheme 253

1. Enter code word Max. input value = 32767

1. Enter 5-digit coding in button field -2-. If necessary, insert zeros in front.

Scheme 254

Example

Desired input value: 1186

Keypad input: 01186

1. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 255

1. Coding will be performed

1. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 256

1. Coding in vehicle system performed
2. Control module identification with new coding (previous coding in parentheses)

1. End function "07 - Erase DTC Memory" by pressing <-- button.

1. Initiate On Board Diagnostic (OBD) of parking assistance. See «PARKING ASSISTANCE ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 257

1. Select diagnostic function "08 - read measured value block" in selection -1-.

Display on VAS 5051

Scheme 258

1. Enter display group Max. input value = 255

1. Input desired display group number in button field -2-. See «4-CHANNEL PARKING ASSISTANCE, DISPLAY GROUP OVERVIEW»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) or for 8-channel parking assistance, see «8-CHANNEL PARKING ASSISTANCE, DISPLAY GROUP OVERVIEW»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 259

1. Display group X
2. Display field 1 Display field 2 Display field 3 Display field 4

Note. If no display follows, a display field is not assigned. To switch to a different display group, proceed as follows

SWITCHING DISPLAY GROUPS

1. Press "08 - Erase DTC Memory" to end function <-- button.

Scheme 260

Scheme 261

Scheme 262

Scheme 263

Scheme 264

Note. If values that are greater than 4.00 ms are obtained with reverse gear selected, either the ultrasound sensor is malfunctioning or there is an open circuit in the wiring.

Scheme 265

Scheme 266

Scheme 267

Scheme 268

Scheme 269

Scheme 270

Scheme 271

Scheme 272

Note. If values are obtained that are greater than 4.00 ms with parking assistance on, either the ultrasound sensor in question is malfunctioning or there is an open circuit in the wiring.

Scheme 273

Note. If values are obtained that are greater than 4.00 ms with parking assistance on, either the ultrasound sensor in question is malfunctioning or there is an open circuit in the wiring.

Using the adaptation function, the following changes can be made and saved.

1. Volume of warning chime
2. Pitch (frequency) of warning chime

1. Initiate output Diagnostic Test Mode of instrument cluster. See «INSTRUMENT CLUSTER ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 274

1. In selection -1-, select the diagnostic function "10 -Adaptation".

Display on VAS 5051

Scheme 275

1. Enter channel number Max. input value = 99

1. Enter desired adaptation channel in button field -2-. See «ADAPTATION TABLE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Press -Q- button to confirm input.

Example for adaptation channel 01-volume of rear warning buzzer

Display on VAS 5051

Scheme 276

1. Enter channel number Max. input value = 99

1. Select function "01" in button field -2- for "Adaptation channel 01" and press Q button to confirm input.

Display on VAS 5051

Scheme 277

1. 1 - Channel 2 read and test
2. 2 - Steering wheel X X WSC X
3. 5 - The sliding bar is positioned on the current adaptation value, e.g. 5

A - Changing adaptation value using sliding bar

Display on VAS 5051

Scheme 278

1. Move sliding bar -5- into desired direction or press on the surface beside the sliding bar, to move it in the desired direction.
2. Press "Save" button -4-.

Display on VAS 5051

Scheme 279

1. 1 - Channel 1 save
2. 2 - Steering wheel 0 4 WSC 0
3. 4 - original value 1 new value 4

1. Confirm new adaptation value by pressing the "take over" button -3-.

Display on VAS 5051

Scheme 280

1. Channel 1 Value 4 stored

1. End function "10 - Adaptation" by pressing <-- button.

B - Change adaptation value via direct input

Display on VAS 5051

Scheme 281

1. Press "Keypad" button -3-.

Display on VAS 5051

Scheme 282

1. Enter adaptation value Input value: 0 to 65535

1. Enter 5-digit adaptation value in button field -2-. Insert zeros in front.

Example

Desired input value: 4

Keypad input: 00004

1. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 283

1. 1 - Channel 1 save
2. 2 - Steering wheel 0 4 WSC 0
3. 4 - original value 1 new value 4

1. Confirm new adaptation value by pressing the "take over" button -3-.

Display on VAS 5051

Scheme 284

1. Channel 1 Value 4 stored

1. End function "10 - Adaptation" by pressing <-- button.

ADAPTATION CHANNELS - PARKING ASSISTANCE

Automatic vertical headlight aim control keeps the tilt angle of switched on low beams constant, even when vehicle tilt is different due to a load shift or acceleration/deceleration.

For the Automatic vertical headlight aim control, one level sensor at the front axle and one at the rear axle register the vehicle's spring deflection. A signal proportional to vehicle speed is also processed by the ABS control module.

The control module evaluates these signals and activates the automatic vertical headlight aim control actuators when the lights are switched on.

The automatic vertical headlight aim control consists of

1. Headlight range control module -J431
2. Left rear level control system sensor -G76
3. Left front level control system sensor -G78
4. Left headlight beam adjusting motor -V48
5. Right headlight beam adjusting motor -V49

Note. Beside the control module identification, the Automatic vertical headlight aim control can also be recognized by a rapidly performed adjusting procedure of the headlights when switching on the ignition If malfunctions occur in the system, the driver is notified via a warning symbol in the instrument cluster's center display.

If special testing equipment is required during road test, note the following

1. Always switch ignition off before connecting or disconnecting test/measurement tools.
2. It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary.
3. Always switch ignition off before disconnecting or connecting battery. Failure to do so may damage electronic control modules.

1. Fuse(s) for respective system OK See appropriate System Wiring Diagram article.
2. VAS 5051 tester connected and vehicle On Board Diagnostic (OBD) selected. See «VAS 5051 TESTER, CONNECTING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
3. Ignition switched on.

Display on VAS 5051

Scheme 285

1. Press vehicle system "55 automatic vertical headlight aim control" in selection -1-.
2. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 286

1. Control module identification of control module

Scheme 287

Note. In the previous graphic refer to: Code Control Module (function 07) for control module coding

1. Click on --> button

Display on VAS 5051

Scheme 288

1. Selection of diagnostic functions

DIAGNOSTIC FUNCTIONS - AUTOMATIC VERTICAL HEADLIGHT AIM CONTROL

Note. The displayed DTC information is updated only when initiating OBD or with "Erase DTC Memory" function 05.

1. Initiate On Board Diagnostic (OBD) of automatic vertical headlight aim control. See «AUTOMATIC VERTICAL HEADLIGHT AIM CONTROL ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 289

1. In selection -1-, click on the diagnostic function "02 -Check DTC Memory".

Display on VAS 5051

Scheme 290

1. DTC memory content: 0 malfunction recognized or X malfunctions recognized
2. Diagnostic Trouble Code (DTC) DTC malfunction location malfunction type

If malfunctions were recognized

1. Print out Screen content or On Board Diagnostic (OBD) protocol: See operating instructions for the VAS 5051 tester.
2. Click on <-- button

Display on VAS 5051

Scheme 291

1. Repair malfunction(s) according to DTC table. See «DIAGNOSTIC TROUBLE CODE (DTC) TABLE»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. In selection, click on diagnostic function "02 - Check DTC Memory" again and Erase DTC Memory. See «ERASE DTC MEMORY (FUNCTION 05)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
3. In selection, click on diagnostic function "06 - End Output. See «End Output (function 06)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

If no malfunction was recognized

1. In selection -1-, click on diagnostic function "06 - End Output". See «END OUTPUT (FUNCTION 06)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Note. Next, all possible malfunctions that can be recognized by automatic vertical headlight aim control and indicated on VAS 5051 scan tool are listed according to their 5-digit numbers. DTC memory stores all static and sporadic malfunctions: A malfunction is recognized as being static if it occurs for at least 2 seconds. If the malfunction is no longer recognized after that it is stored as sporadic malfunction. In addition, "sporadic" is indicated on display. When the ignition is switched on, all existing malfunctions are automatically re-classified as sporadic malfunctions and will only register as static malfunctions if they still occur after testing. Sporadic malfunctions which no longer occur during 50 driving cycles (ignition on at least 5 minutes, vehicle speed greater than 30 km/h) are erased automatically. Do not immediately replace components that the VAS 5051 suggests are malfunctioning, instead: Check wire connections and harness connectors to these components according to wiring diagram. Also check Ground (GND) connections according to wiring diagram. This is particularly valid when malfunctions are displayed as "sporadic". After repair and function test of the system, DTC memory must be checked again and erased.

Scheme 292

Scheme 293

Scheme 294

Scheme 295

Scheme 296

Scheme 297

Note. In the previous graphic refer to: Basic Setting (function 04) for performing complete basic setting

Note. Output Diagnostic Test Mode (DTM) is only possible with engine idle and ignition switched on. If malfunctions are detected during Output Diagnostic Test Mode (DTM), determine cause of malfunction and repair.

The following actuators will be activated in sequence in the "On Board Diagnostic (OBD)" function

1. Lower the headlights
2. Raise the headlights
3. Activating the warning lamp

1. Fuse(s) for respective system OK See appropriate System Wiring Diagram article.
2. Low beams switched on.

1. Initiate On Board Diagnostic (OBD) of automatic vertical headlight aim control. See «AUTOMATIC VERTICAL HEADLIGHT AIM CONTROL ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 298

1. In selection -1-, click on the diagnostic function "03-On Board Diagnostic (OBD)".

Display on VAS 5051

Scheme 299

A - 1.Actuator in test

2 - Headlights are lowered

1. The headlights will be lowered, until the upper end position has been reached.

1. Click on => button

Display on VAS 5051

Scheme 300

A-2. Actuator in test

2- Headlights are raised

1. The headlights will be raised, until the upper end position has been reached.

1. Click on --> button

Display on VAS 5051

Scheme 301

A - 3. Actuator in test

3 - Signal wire to instrument cluster

1. Warning symbol (auto. vert, headlight aim control) is indicated in the center display of the instrument cluster.

1. Click on --> button

Display on VAS 5051

Scheme 302

A - Actuator test has ended

1. End function "03 - Output Diagnostic Test Mode (DTM)" by pressing <-- button.

Basic Setting (function 04)

Basic setting must be performed after replacing a headlight, axle sensor or the control module. Observe the following

1. Vehicle must be in a precisely defined load condition.

Note. Current specified values and procedures for load condition can be found in the Repair Manual "Maintenance".

See MAINTENANCE .

1. Rock vehicle (move bumpers up and down several times. allowing vehicle to come to a rest on its own).

1. Initiate On Board Diagnostic (OBD) of automatic vertical headlight aim control. See «Automatic vertical headlight aim control On Board Diagnostic (OBD), initiating»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 303

1. In selection -1-, click on the diagnostic function "04-Basic setting".

Display on VAS 5051

Scheme 304

1. Enter display group Max. input value = 255

1. Select function "001" in button field -2- for "Display group number 001" and press Q button to confirm input.

Headlights are being moved to set position.

Display on VAS 5051

Scheme 305

1. Display group 1 System in basic setting
2. Headlight Adjusting

Headlights are now in the set position.

Note. Basic setting 1 switches the adjustment mode off and enters "headlights not set" into DTC memory.

1. Adjust headlights using VAS5046 headlight adjustment tool.

Display on VAS 5051

Scheme 306

1. Press up button -3- to change into display group 002.

1. Display group 2 System in basic setting
2. Adjusted position adapted

The control module has now learned this position as the adjustment position.

Note. The entry in DTC memory ("Headlights not set") is erast adjustment mode is re-initiated.

1. End function "04 - Basic setting" by pressing <-- button.

Note. If DTC memory cannot be erased, Check DTC Memory again and repair malfunction.

1. DTC memory checked. See «CHECK DTC MEMORY (FUNCTION 02)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. All malfunctions repaired.

After successful DTC memory check

Display on VAS 5051

Scheme 307

1. In selection -1-, click on the diagnostic function "05 - Check DTC Memory".

Display on VAS 5051

Scheme 308

1. no indication (before erasing) or DTC memory erased NOTE: If indication -1- appears in display field: "DTC memory has not yet been checked", the work sequence was not adhered to correctly. DTC memory can only be erased if DTC memory was checked before.
2. Note: Perform the function? Note: Data is being erased !

1. Press on "OK"-button in display -2-.
2. End function "05 - Erase DTC Memory" by pressing on <-- button.

Display on VAS 5051

Scheme 309

1. Select diagnostic function "06 - End Output" in selection -1-.

Display on VAS 5051

Scheme 310

1. Switch off ignition and disconnect diagnostic connector after this indication is displayed.

Using this function, the control module for automatic vertical aim control can be coded as follows

1. Vehicle model
2. Drive layout

1. Initiate On Board Diagnostic (OBD) of automatic vertical headlight aim control. See «AUTOMATIC VERTICAL HEADLIGHT AIM CONTROL ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

Scheme 311

1. Select diagnostic function "07 - Code Control Module" in selection -1-.

Display on VAS 5051

Scheme 312

1. Enter code word Max. input value = 32767

1. Enter 5-digit coding in button field -2-. Insert zeros in front.

CODE DESCRIPTION - AUTOMATIC HEADLIGHT AIM CONTROL

Example

Desired input value: 20

Keypad input: 00020

1. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 313

1. Coding will be performed

1. Wait until the next indication appears on display.

Display on VAS 5051

Scheme 314

1. Coding in vehicle system performed
2. Control module identification with new coding (previous coding in parentheses)

1. End function "07 - Erase DTC Memory" by pressing <-- button.
2. Initiate Output Diagnostic Test Mode (DTM). See «BASIC SETTING (FUNCTION 04)»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up__basic-setting-function-04) .

1. Initiate On Board Diagnostic (OBD) of automatic vertical headlight aim control. See «AUTOMATIC VERTICAL HEADLIGHT AIM CONTROL ON BOARD DIAGNOSTIC (OBD), INITIATING»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .

Display on VAS 5051

1. Select diagnostic function "08 - read measured value block" in selection -1-.

Display on VAS 5051

Scheme 315

1. Enter display group Max. input value = 255

1. Enter desired display group number in button field -2-. See «Display group overview»(/audi/s6/c5-1999-2004/remont/cruise-control-systems/#on-board-diagnostic-obd-2001-and-up) .
2. Press -Q- button to confirm input.

Display on VAS 5051

Scheme 316

1. Display group X
2. Display field 1 Display field 2 Display field 3 Display field 4

Note. If no display follows, a display field is not assigned. To switch to a different display group, proceed as follows

SWITCHING TO DIFFERENT DISPLAY GROUP

1. Press "08 - Erase DTC Memory" to end function <-- button.

Scheme 317

Scheme 318

Scheme 319

1. Battery voltage at least 12.7V
2. Ground (GND) connections at engine and transmission OK
3. Battery Ground (GND) strap and Ground (GND) strap between battery and transmission (if installed) OK
4. Fuses for relevant system OK

See appropriate System Wiring Diagram article.

1. Switch ignition off.
2. Connect VAS 5051 tester to vehicle with VAS 5051/1 diagnostic wire.

Note. If a malfunction indication is displayed: See operating instructions for the VAS 5051 tester.

Display on VAS 5051

Scheme 320

1. Press the "Guided troubleshooting" button.

Display on VAS 5051

Scheme 321

1. Switch ignition on.

Note. Selecting "00 - Check DTC Memory - entire system" in selection -1- initiates the automatic test sequence, i.e. it results in a DTC check on all OBD capable systems in the vehicle.

1. Always switch ignition off before connecting or disconnecting test/measurement tools.
2. It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary.
3. Always switch ignition off before disconnecting or connecting battery. Failure to do so may damage a control module.

See also:
• MALFUNCTION MESSAGE "DEF" ON TRIP ODOMETER DISPLAY
• CHECK DTC MEMORY (FUNCTION 02)
• SENDER FOR FUEL GAUGE -- ALL WHEEL DRIVE
• INSTRUMENT CLUSTER, REMOVING AND INSTALLING
• MAINTENANCE
• INDUCTION COIL, REPLACING
• ADAPTATION (FUNCTION 10)
• COMPONENT LOCATIONS, OVERVIEW
• ADAPTATION (FUNCTION 10)
• VAS 5051 TESTER, CONNECTING
• Code Control Module (function 07)
• CHECK DTC MEMORY (FUNCTION 02)
• OUTPUT DIAGNOSTIC TEST MODE (DTM) (FUNCTION 03)
• ERASE DTC MEMORY (FUNCTION 05)
• END OUTPUT (FUNCTION 06)
• READ MEASURING VALUE BLOCK (FUNCTION 08)
• DIAGNOSTIC TROUBLE CODE (DTC) TABLE
• Adaptation channel 62-Adaptation for information data-BUS
• Data exchange between control modules, checking
• Adaptation channel 61-Adaptation for comfort system CAN-bus
• CODING VERSION FOR ADDITIONAL EQUIPMENT
• Adaptation Table
• ADAPTATION CHANNEL 02-RESETTING SRI AFTER SERVICE
• ADAPTATION CHANNEL 03-ADAPTATION OF FUEL CONSUMPTION DISPLAY
• ADAPTATION CHANNEL 04-LANGUAGE VERSIONS OF DRIVER INFORMATION SYSTEM
• ADAPTATION CHANNEL 09 - ODOMETER DISPLAY
• ADAPTATION CHANNEL 18-ADAPTATION OF AUXILIARY HEATER
• ADAPTATION CHANNEL 30-ADAPTATION OF FUEL GAUGE SENDER RESISTANCE RANGE
• ADAPTATION CHANNEL 35-ADAPTATION OF THE ENGINE SPEED THRESHOLD
• ADAPTATION CHANNEL 40-DISTANCE DRIVEN SINCE SERVICE
• ADAPTATION CHANNEL 41 - TIME SINCE SERVICE
• ADAPTATION CHANNEL 42 - MINIMUM MILEAGE PERFORMANCE
• ADAPTATION CHANNEL 43 - MAXIMUM MILEAGE PERFORMANCE
• ADAPTATION CHANNEL 44 - MAXIMUM TIME INTERVAL
• ADAPTATION CHANNEL 45 - ADAPTATION TO OIL QUALITY
• ADAPTATION CHANNEL 60-ADAPTATION FOR POWERTRAIN DATA-BUS
• B - Change adaptation value via direct input
• A - Changing adaptation value using sliding bar
• Input values for replacing instrument cluster
• M.Y. 2001
• From M.Y. 2002
• ADAPTATION AFTER REPLACING INSTRUMENT CLUSTER
• ADAPTATION OF VEHICLE KEYS
• LOGIN PROCEDURE (FUNCTION 11)
• ADAPTATION AFTER REPLACING INSTRUMENT CLUSTER AND THE ENGINE CONTROL MODULE (ECM)
• ADAPTATION AFTER REPLACING ENGINE CONTROL MODULE (ECM)
• LOST KEY PROCEDURE
• LOGIN PROCEDURE, INSTRUMENT CLUSTER
• Determining the secret number (7-digit PIN)
• LOGIN PROCEDURE, ENGINE CONTROL MODULE (ECM)
• CHECKING WIRE CONNECTIONS
• WIRE AND COMPONENT TEST USING VAG1598/31 TEST BOX
• BASIC SETTING (FUNCTION 04)