Contents Wiring diagrams Section: Collision/avoidance All sections

Battery, Collision Avoidance, Data Bus, Fuse & Relay Box -- Basic Knowledge: Component Locations Mercedes-Benz E-class W212/S212/C207/A207

Collision/avoidance 24 illustrations ~2610 words

Auxiliary battery relay, location/task - GF54.10-P-4201T

MODEL 211.0/2 up to 31.5.06 except CODE (494) USA version except CODE (498) Japan version

MODEL 211.0/2 up to 30.6.06 with CODE (494) USA version with CODE (498) Japan version

Location

Scheme 54

Scheme 54: Auxiliary battery relay, location/task - GF54.10-P-4201T
Auxiliary battery relay, locationThe auxiliary battery relay (K57/2) is mounted on the partition wall to the passenger compartment near the auxiliary battery (G1/7).
Auxiliary battery relay, taskThe auxiliary battery relay (K57/2) separates the battery (G1) from the auxiliary battery (G1/7). The auxiliary battery relay (K57/2) connects both batteries in parallel when required and to charge the auxiliary battery (G1/7).

Two-battery vehicle power supply, survey of system components, location/task/design/function - GF54.10-P-9999TZ

MODEL 211.0/2 up to 31.5.06 except CODE (494) USA version except CODE (498) Japan version

MODEL 211.0/2 up to 30.6.06 with CODE (494) USA version with CODE (498) Japan version

Auxiliary battery relay, location/taskGF54.10-P-4201T
Battery control unit location/taskGF54.21-P-4121T
Two-battery vehicle power supply, contents, function descriptionGF54.10-P-0999TZ

Upper control panel control unit, location/task/design/function - GF54.21-P-4105T

Model 211.0/6

Scheme 55

Scheme 55: Upper control panel control unit, location/task/design/function - GF54.21-P-4105T
Upper control panel control unit, locationThe upper control panel control unit (N72/1) is located below the audio unit in the central area of the dashboard.
Upper control panel control unit, taskGF54.21-P-4105-02T
Upper control panel control unit, designGF54.21-P-4105-03T
Upper control panel control unit, functionThe upper control panel control unit (N72/1) operates with its own dedicated microprocessor which scans switches, actuates appropriate semiconductor switches and exchanges data with the interior CAN.

Driver-side SAM control unit with fuse and relay module, location/task/design - GF54.21-P-4109T

MODELS 211.0/2/6

Scheme 56

Scheme 56: Driver-side SAM control unit with fuse and relay module, location/task/design - GF54.21-P-4109T
Driver-side SAM control unit with fuse and relay module, locationThe driver-side SAM control unit with fuse and relay module (N10/1) is located in the engine compartment near the left hood hinge (looking towards front of vehicle).
Driver-side SAM control unit with fuse and relay module, taskGF54.21-P-4109-01T
Driver-side SAM control unit with fuse and relay module, designThe driver-side SAM control unit with fuse and relay module (N10/1) is contained in a sturdy plastic housing. Various fuses and relays are attached to the control unit on a supporting bracket.

Passenger-side SAM control module with fuse and relay module, location/task/design - GF54.21-P-4111T

MODELS 211.0/2/6

Scheme 57

Scheme 57: Passenger-side SAM control module with fuse and relay module, location/task/design - GF54.21-P-4111T
Passenger-side SAM control module with fuse and relay module, locationThe passenger-side SAM control module (N10/11) is located in the right front footwell.
Passenger-side SAM control module with fuse and relay module, taskGF54.21-P-4111-01T
Passenger-side SAM control module with fuse and relay module, designThe front passenger SAM control unit (N10/11) is accommodated in a plastic housing and on a stable carrier plate.

Lower control panel control module, location/task/design - GF54.21-P-4116T

MODELS 211.0/2/6

location

Scheme 58

Scheme 58: Lower control panel control module, location/task/design - GF54.21-P-4116T
Lower control panel control module, locationThe lower control panel control module (N72) is divided into groups of switches or buttons which are arranged on the center console around the gearshift lever or selector lever.
Lower control panel control module, taskGF54.21-P-4116-01T
Bottom control panel control unit designGF54.21-P-4116-02T

Battery control unit location/task - GF54.21-P-4121T

MODEL 211.0/2 up to 31.5.06 except CODE (494) USA version except CODE (498) Japan version

MODEL 211.0/2 up to 30.6.06 with CODE (494) USA version with CODE (498) Japan version

Scheme 59

Scheme 59: Battery control unit location/task - GF54.21-P-4121T

Arrangement illustrated on model 211.0

Battery control unit locationThe battery control unit (N82) is located in the spare tire well of the luggage compartment.
Battery control unit, taskGF54.21-P-4121-02T

Rain/light sensor location/task/function - GF54.21-P-4123Q

MODEL 209.3 /4, 211.0 /2, 215, 220 as of 1.9.02

Scheme 60

Scheme 60: Rain/light sensor location/task/function - GF54.21-P-4123Q

Shown on model 209.3

Rain/light sensor locationThe rain/light sensor (B38/2) is stuck onto the inside of the windshield below the overhead control panel control module.
Rain/light sensor taskThe rain sensor (B38/2) measures the quantity of moisture on the windshield and controls the intermittent time of the wiper system. At the same time it also records the intensity of the daylight and through this controls the automatic functions of exterior lights and interior lights.
Rain sensor/light sensor, functionGF54.21-P-4123-04Q

Steering column module location/task - GF54.21-P-4125T

MODEL 211.0/2/6

Shown on Model 211.0

Scheme 61

Scheme 61: Steering column module location/task - GF54.21-P-4125T
Steering column module, locationThe steering column module (N80) is located on the steering column.
Steering column module, taskGF54.21-P-4104-02T

Rear SAM control unit with fuse and relay module, location/task - GF54.21-P-4130T

MODEL 211.0/6

Shown on model 211.0

Scheme 62

Scheme 62: Rear SAM control unit with fuse and relay module, location/task - GF54.21-P-4130T
Rear SAM control unit with fuse and relay module, locationThe rear SAM control unit with fuse and relay module (N10/2) is installed in the trunk at the inner wheel house on the left side in the direction of travel.
Rear SAM control unit with fuse and relay module, taskGF54.21-P-4112-01T

MODEL 211.0/2/6

Scheme 63

Scheme 63: Data link connector, location/task/design/function - GF54.22-P-2100T
Data link connector, locationThe data link connector (X11/4) is located in the driver-side footwell.
Data link connector, taskThe 16-pin data link connector (X11/4) connects the STAR DIAGNOSIS and the K-lines of the control units in the vehicle.
Data link connector, designGF54.22-P-2100-02T
Data link connector, functionThe data link connector (X11/4) bundles the K-lines of the control units in the vehicle into a fixed connector. The K-lines must be active for outputting faults so that the fault codes of the control units can be read out.

Scheme 64

Scheme 64: Instrument cluster (IC), operating information - GF54.30-P-0002-05T

Shown as of 1.6.05

Multifunction steering wheel (MFL), controls

Scheme 65

Scheme 65

This document covers the following points

  1. Operating the multifunction display (A1p13)
  2. Call display of different systems
  3. Browse within a system
  4. Individual settings
  5. Change settings
  6. Example: Switching over from degrees centigrade to degrees Fahrenheit (up to 31.5.05)
  7. Recall the factory settings
  8. Call stored fault and warning messages
  9. Acknowledge fault and warning messages on the multifunction display (A1p13)
  10. Set brightness of lighting
  11. Switch on ESP rolling test

Operating the multifunction display (A1p13)

If the instrument cluster (A1) is activated, by opening the driver's door for example, the basic display of the basic system (trip odometer and total mileage, outside temperature) always appears on the multifunction display (A1p13).

Calling up display of different systems

Function requirements

  1. Circuit 15R ON
  2. No undervoltage or overvoltage

If the system selection button (S110s3) on the multifunction steering wheel (MFL) is pressed, the multifunction display (A1p13) switches over to the basic display of the next system. Once the driver has scrolled through all systems the main screen of the base function appears again.

System selection via the multifunction steering wheel using the system selection button (S110s3)

Scheme 66

Scheme 66

The illustration above shows the possible systems arranged in a circle. When the system selection button (S110s3) is pressed, the display always moves quickly on to the next system.

Scrolling within a system

Function requirements

  1. Circuit 15R ON
  2. No undervoltage or overvoltage

In addition to the main screen, most systems also feature other screens. Scrolling within a system takes place via the scroll forward/back button (S110s1) (↑,↓). The display moves on further each time the scroll forward/back button (S110s1) (↑,↓) is pressed. The display scrolls either forwards or backwards depending on which portion of the scroll forward/back pushbutton (S110s1) the driver presses (↑,↓).

You can jump to another system from any screen by pressing the system selection button (S110s3). With the exception of the trip computer (RRE) the basic display of this system then appears. If a change is made from the previous system to the trip computer system, the display screen is always called up which was shown last with the trip computer (RRE) system

The display only shows systems and functions available in the particular vehicle. If a system is not available, it is "skipped" by pressing the system selection button (S110s3)

Overview and sequence of Menu item "Settings"

Scheme 67

Scheme 67

Individual settings

Function requirements

  1. Circuit 15R ON
  2. No undervoltage or overvoltage

The "Settings" function allows the driver to change various presets. Various settings can be performed in the instrument cluster (A1), e.g. setting the time (hours and minutes).

The time cannot be set if one of the following codes is available

  1. with code (494) USA version
  2. with CODE (498) Japanese version
  3. with code (352) COMAND operating and display system
  4. with code (527) COMAND APS (with navigation)

The time is set automatically with the help of satellites on vehicles with the above codes

Press the system selection button (S110s3) until the menu "Settings... reset: press reset button for 3 seconds" appears on the multifunction display (A1p13). via the scroll forward/back button (S110s1)

(↑,↓) Go to the menu item settings. The desired menu item is selected via the + and button, adjustment of specific functions and volume control (S111s1).

The following settings are possible, for example

  1. Automatic door locking (ON/OFF)
  2. Winter tire speed limit (160 km/h up to 210 km/h or Off)
  3. Driving light switching (manual driving light, automatic driving light
  4. Ambient illumination function
  5. Headlamp delayed switch-off (0 s/15 s/30 s/45 s/60 s) (up to 31.5.05) (ON/OFF) (ON = 15 s) (as of 1.6.05)
  6. Locator lighting (AFB)
  7. "Ambient" light
  8. Interior light courtesy delay (0 s/5 s/10 s/15 s/20 s) (up to 31.5.05) (ON/OFF) (ON = 10 s) (as of 1.6.05)
  9. Station search (frequency/memory)
  10. Stationary heater activation time
  11. Activate entry aid (OFF/steering column/steering column and seat) (up to 31.5.05) (OFF/steering column) (as of 1.6.05)
  12. Parking assist mirror adjustment (ON/OFF)
  13. Folding mirror, in/out (ON/OFF) (up to 31.5.05) (USA = ON, except USA = OFF) (as of 1.6.05)

Overview and sequence of settings for the menu item "Instrument cluster"

Scheme 68

Scheme 68

Change setting in menu item "Instrument Cluster"

Press the system selection button (S110s3) until the "settings" function appears on the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) (↑,↓). Press the button + and -, setting of specific functions and volume control (S111s1) towards (+) or (-) until the desired menu item is active on the multifunction display (A1p13). Press the scroll forward/back button (S110s1) (↑,↓) until the display of the setting to be changed appears on the multifunction display (A1p13). Press the + and -, specific function setting and volume control button (S111s1) in either the "+" or "-" direction until the value you require is displayed on the multifunction display.A1p13 The activated value becomes effective immediately.

Temperature display (up to 31.5.05)

You can switch the outside temperature display between degrees Centigrade and degrees Fahrenheit. The instrument cluster (A1) also sends a message for the air conditioning on the class B (interior) controller area network bus (CAN-B).

As of 1.6.05 the temperature display is established via variant coding in the central gateway control unit (N93)

Text/language

The language in which the texts appear in the instrument cluster (A1) can be selected here. The instrument cluster (A1) also places a corresponding message on CAN-B. The voice setting on the "radio" does not have an effect on the voice setting in the instrument cluster (A1).

Speedometer

You can switch the tachometer between miles and kilometers per hour. This changeover also affects the display of the trip computer integrated into the instrument cluster (A1). The instrument cluster (A1) sends a message on the class C (engine compartment) controller area network bus (CAN-C).

Overview and sequence of settings in the menu item "Illumination"

Scheme 69

Scheme 69

Change setting in the menu item "Illumination"

Press the system selection button (S110s3) until the "Settings" function appears on the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) (↑,↓). Press pushbutton + and -, setting specific functions and volume control (S111s1) in the (+) or (-) direction until the desired menu item "Lighting" is active on the multifunction display (A1p13)

Press the scroll forward/back button (S110s1) (↑,↓) until the display of the setting to be changed appears on the multifunction display (A1p13). Press the + and -, specific function setting and volume control button (S111s1) in either the "+" or "-" direction until the value you require is displayed on the multifunction display.A1p13 The activated value becomes effective immediately.

Overview and sequence of settings in the menu item "Vehicle"

Scheme 70

Scheme 70

Change setting in the menu item "Vehicle"

Press the system selection button (S110s3) until the "settings" function appears on the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) (↑,↓). Press pushbutton + and -, setting specific functions and volume control (S111s1) in the (+) or (-) direction until the desired menu item "Vehicle" is active on the multifunction display (A1p13)

Press the scroll forward/back button (S110s1) (↑,↓) until the display of the setting to be changed appears on the multifunction display (A1p13). Press the + and -, specific function setting and volume control button (S111s1) in either the "+" or "-" direction until the value you require is displayed on the multifunction display.A1p13 The activated value becomes effective immediately.

Overview and sequence of settings in the menu item "Comfort"

Scheme 71

Scheme 71

Change setting in menu item "Comfort"

Press the system selection button (S110s3) until the "Settings" function appears on the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) (↑,↓). Press pushbutton + and -, setting specific functions and volume control (S111s1) in the (+) or (-) direction until the desired menu item "Comfort" is active on the multifunction display (A1p13), Press the scroll forward/back button (S110s1) (↑,↓) until the display of the setting to be changed appears on the multifunction display (A1p13). Press the + and -, specific function setting and volume control button (S111s1) in either the "+" or "-" direction until the value you require is displayed on the multifunction display.A1p13 The activated value becomes effective immediately.

Settings are selectable regardless of the vehicle speed

Example: Switching over from degrees Centigrade to degrees Fahrenheit (up to 31.5.05)

Press the system selection button (S110s3) until the "settings" function appears on the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) (↑,↓). Press the button + and -, setting of specific functions and volume control (S111s1) towards (+) or (-) until the desired menu item "Instrument cluster" is active on the multifunction display (A1p13). Press the scroll forward/back button (S110s1) (↑,↓) until the display "TEMPERATURE DISPLAY" appears on the multifunction display (A1p13). Press the button + and -, setting of specific functions and volume control (S111s1) towards (-) on the right-hand side of the steering wheel so that Fahrenheit is now active on the multifunction display (A1p13). The setting becomes effective immediately.

As of 1.6.05 it is no longer possible for the user to change over from degrees Centigrade to degrees Fahrenheit

Recalling the factory settings

All the possible settings are erased and the manufacturer default setting reproduced by a "Reset".

Carry out reset

Press the system selection button (S110s3) until the "SETTINGS" function appears on the multifunction display (A1p13). Operate the instrument lighting dimmer and reset button (A1r1) for at least 3 s. "RESET SETTINGS, CONFIRMATION WITH RESET BUTTON" appears on the multifunction display (A1p13). Operate the instrument lighting dimmer and reset button (A1r1) once more within 5 s, all the settings are now reset to the factory setting. "RESET TO MANUFACTURER SETTING" appears on the multifunction display (A1p13). If the instrument illumination rheostat and reset button (A1r1) is not pressed within this 5 s, the display switches back to the basic display. The settings are not then reset.

If a reset is performed while driving, the setting menu "Driving lights on" in the "Illumination" menu and the setting menu "Speed limit (winter tires) in the "Vehicle" menu are not reset for safety reasons. The message "NOT ALL SETTINGS RESET TO DEFAULTS WHILE DRIVING" appears

Calling stored fault and warning messages

When the instrument cluster (A1) is active, you can scroll though the saved messages

  1. Press the system selection button (S110s3) until the display "MESSAGES" appears on the multifunction display (A1p13) (as of 1.6.05)
  2. Press the system selection button (S110s3) until the display "MESSAGES" appears on the multifunction display (A1p13) (as of 1.6.05)
  3. Use the button + and -, setting of specific functions and volume control (S111s1) to scroll through the fault messages. The messages are displayed in the order in which they were acknowledged.

Acknowledging fault and warning messages

These messages are divided into 3 categories according to their priority. Messages in categories 2 and 3 on the multifunction display (A1p13) can be acknowledges by pressing the Instrument illumination rheostat and reset button (A1r1) as well as with the system selection button (S110s3) of the multifunction steering wheel and then stored in the fault memory. On the other hand messages in category 1 (top priority) cannot be acknowledged. Indicator or warning lamps that light up at the same time cannot be acknowledged.

Certain fault and warning messages are also accompanied by a chime. A signal always sounds when faults and warning messages are displayed. For example "close trunk lid" belongs to the fault messages and warning messages

The fault messages and warning messages are not stored in the fault memory

Setting illumination brightness

Using the instrument illumination rheostat and reset button (A1r1) the brightness of the illumination of the instrument cluster (A1) as well as the controls and switch illumination can be adapted to the individual needs

  1. Turning to the right --> brighter
  2. Turn to the left --> dimmer

Switch on ESP rolling test

Function prerequisites

  1. Circuit 15R ON
  2. No undervoltage or overvoltage

In the rolling test, the rotational speeds of the driven axle are mirrored on the non-driven axle. To do this

  1. Adjust the standard display (basic condition with current total mileage and trip odometer and outside temperature).
  2. Keep the instrument illumination rheostat and reset button (A1r1) pressed for approx. 20 s to 30 s or 3 times within 2.5 s until the beep is audible.
  3. Press the scroll forward/back button (S110s1) once in the (↑) direction. The rolling test display appears.
  4. Switch on rolling test using the + and -, specific function setting and volume control button (S111s1).

The dynamometer test remains active, even if "circuit 15R ON" has been switched off in the meantime until it is switched off with the button + and -, setting of specific functions and volume control (S111s1)

Instrument cluster (IC), location/task - GF54.30-P-3039T

MODEL 211.0/2 up to 31.5.06 except CODE (494) USA version except CODE (498) Japan version

MODEL 211.0/2 up to 30.6.06 with CODE (494) USA version with CODE (498) Japan version

Location

Scheme 72

Scheme 72: Instrument cluster (IC), location/task - GF54.30-P-3039T
Instrument cluster (IC), locationThe instrument cluster (A1) is located in the instrument panel.
Instrument cluster (IC), taskGF54.30-P-3039-02T

Survey of system components, instrument cluster (IC), location/task/design/function - GF54.30-P-9997TZ

MODEL 211.0/2 up to 31.5.06 except CODE (494) USA version except CODE (498) Japan version

MODEL 211.0/2 up to 30.6.06 with CODE (494) USA version with CODE (498) Japan version

Instrument cluster (IC), location/taskGF54.30-P-3039T
Table of contents for function description of instrument cluster (IC)GF54.30-P-0997TZ

PTS control unit, location/task - GF54.65-P-4100T

MODEL 211.0/2 with CODE (220) Parktronic system (PTS)

Vehicles up to model year 08/YoM 07 shown on model 211.0

Scheme 73

Scheme 73: PTS control unit, location/task - GF54.65-P-4100T

Vehicles as of model year 09/YoM 08 shown on model 211.0

Scheme 74

Scheme 74
PTS control unit, locationVehicles up to model year 08/YoM 07 The PTS control unit (N62) is located in the trunk behind the left paneling on the control unit carrier. Vehicles as of model year 09/YoM 08 The PTS control unit (N62) is located in the trunk behind the left paneling (on vehicles with code (810) Sound system, behind the amplifier for sound system (N40/3)).
PTS control unit, taskActuation of the sensors Evaluation of echo travel times Bidirectional data transfer from and to the PTS warning indicators System test Data exchange with the Controller Area Network bus Class B (interior) (CAN B) Dimming of warning elements

Sensors, location/task/function - GF54.65-P-4102T

MODEL 209.3 /4, 211.0 /2 with CODE (220a) Parktronic system (PTS)

Scheme 75

Scheme 75: Sensors, location/task/function - GF54.65-P-4102T

Shown on model 211.0

Sensors, locationThe front bumper PTS sensor unit (A42) and rear bumper PTS sensor unit (A43) are located in the respective bumper.
Sensors, taskThe sensors transmit ultrasonic waves and detect echoes from existing obstacles.
Sensors, functionThe ultrasonic sensors function based on the echo sounding principle and operate as transmitters and receivers.

Warning display, location / task / design / function - GF54.65-P-4104T

MODEL 209.3 /4, 211.0 /2 with CODE (220a) Parktronic System (PTS) center instrument panel PTS warning indicator

Shown on model 211.0

Scheme 76

Scheme 76: Warning display, location / task / design / function - GF54.65-P-4104T
Warning display, locationThe center instrument panel PTS warning indicator (A44/4) is located in the center of the instrument panel.
Warning display, taskDisplays of the distance to an obstacle in the front monitoring range. When the minimum distance is not reached, output of an acoustic signal.
Warning display, designThe center instrument panel PTS warning indicator (A44/4) consists of the LCD bar display (model 209) or the LEDs (model 211), the frame, the sound source and microprocessor which evaluates and converts the data telegrams of the Parktronic control unit.
Warning display, functionModels 211.0/2GF54.65-P-4104-01T

Warning display, location / task / design / function - GF54.65-P-4104TA

MODEL 209.3 /4, 211.0 /2 with CODE (220a) Parktronic System (PTS)

Rear PTS warning indicator

Shown on model 211.0

Scheme 77

Scheme 77: Warning display, location / task / design / function - GF54.65-P-4104TA
Warning display, locationThe PTS warning display, rear (A44/3) is located in the rear area of the headliner.
Warning display, taskTo display the distance to an obstacle in the rear monitoring range. When the minimum distance is not reached, output of an acoustic signal.
Warning display, designThe rear PTS warning indicator (A44/3) consists of the LCD bar display (model 209) or the LEDs (model 211), the sound source and microprocessor which evaluates and converts the data telegrams of the Parktronic control unit.
Warning display, functionModels 211.0/2GF54.65-P-4104-01T

Survey of system components, Parktronic system (PTS), location/task/design/function - GF54.65-P-9999T

MODEL 211.0/2 with CODE (220a) Parktronic System (PTS)

PTS control unit, location/taskGF54.65-P-4100T
Sensors, location/task/functionGF54.65-P-4102T
Warning display, location/task/design/functionPTS warning display, rearGF54.65-P-4104TA
PTS warning display, center of instrument panelGF54.65-P-4104T
Contents, function description, Parktronic system (PTS)GF54.65-P-0999T