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On Board Diagnostic - System Description - Interior Lamps (avant) Audi A4 B8

Interior/illumination Lights 5 illustrations ~3880 words

GENERAL INFORMATION

The condition of the door contact, the S-contacts, the ignition and the exterior lamps on the vehicle is very important for the functioning of the interior lamps. The condition of the following components must be determined

  1. Driver Door Control Module -J386
  2. Front Passenger Door Control Module -J387
  3. Left Rear Door Control Module -J388
  4. Right Rear Door Control Module -J389
  5. Comfort System Central Control Module -J393
  6. Vehicle Electrical System Control Module -J519
  7. Headlamp Switch -E1
  8. Access/Start Authorization Button -E408- (special equipment)
  9. Access/Start Authorization Switch -E415
  10. Driver Door Contact Switch -F2
  11. Front Passenger Door Contact Switch -F3
  12. Left Rear Door Contact Switch -F10
  13. Right Rear Door Contact Switch -F11
  14. Left Front Central Locking System Actuator -F131
  15. Right Front Central Locking System Actuator -F133
  16. Left Rear Central Locking System Actuator -F132
  17. Right Rear Central Locking System Actuator -F134
  18. Driver Door Central Locking -SAFE- Function Actuator -F243- (not USA)
  19. Front Passenger Door Central Locking -SAFE- Function Actuator -F244- (not USA)
  20. Left Rear Door Central Locking -SAFE- Function Actuator -F245- (not USA)
  21. Right Rear Door Central Locking -SAFE- Function Actuator -F246- (not USA)
  22. Rain/Light Recognition Sensor -G397- (special equipment)

DOOR CONTACT CONDITION

The condition of the driver door contact switch -F2-, the left front central locking system actuator -F131- and of the driver door central locking -SAFE- function actuator -F243- is read by the driver door control module -J386- and sent to the comfort system central control module -J393- via the CAN-bus.

The condition of the front passenger door contact switch -F3-, the right front central locking system actuator -F133- and of the front passenger door central locking -SAFE- function actuator -F244- is read by the front passenger door control module -J387- and then sent to the comfort system central control module -J393- via the CAN-bus.

The left rear door control module -J388- reads the condition of the left rear door contact switch -F10-, the Left rear central locking system actuator -F132- and the left rear door central locking -SAFE- function actuator -F245-. The conditions are first sent via the LIN-bus to the driver door control module -J386- and from there they are sent via the CAN-bus to the comfort system central control module -J393-.

The right rear door control module -J389- reads the condition of the right rear door contact switch -F11-, the right rear central locking system actuator -F134- and the right rear door central locking -SAFE- function actuator -F246-. The conditions are first sent via the LIN-bus to the front passenger door control module -J387- and from there they are sent via the CAN-bus to the comfort system central control module -J393-.

The comfort system central control module -J393- processes all the door contact information and then forwards this information on the CAN-bus.

Scheme 6

Scheme 6: DOOR CONTACT CONDITION
Scheme 6: DOOR CONTACT CONDITION
  1. F2 - Driver Door Contact Switch
  2. F3 - Front Passenger Door Contact Switch
  3. F10 - Left Rear Door Contact Switch
  4. F11 - Right Rear Door Contact Switch
  5. F131 - Left Front Central Locking System Actuator
  6. F132 - Left Rear Central Locking System Actuator
  7. F133 - Right Front Central Locking System Actuator
  8. F134 - Right Rear Central Locking System Actuator
  9. F243 - Driver Door Central Locking -SAFE- Function Actuator
  10. F244 - Front Passenger Door Central Locking -SAFE- Function Actuator
  11. F245 - Left Rear Door Central Locking -SAFE- Function Actuator
  12. F246 - Right Rear Door Central Locking -SAFE- Function Actuator
  13. J393 - Comfort System Central Control Module
  14. J386 - Driver Door Control Module
  15. J387 - Front Passenger Door Control Module
  16. J388 - Left Rear Door Control Module
  17. J389 - Right Rear Door Control Module
  18. J519 - Vehicle Electrical System Control Module
  19. A - Can-Bus Comfort
  20. B - Discrete Wire Connection
  21. C - LIN-Bus

S-CONTACT AND IGNITION CONDITION

Terminal Control without Advanced Key

There are 4 microswitches inside the access/start authorization switch -E415-. The comfort system central control module -J393- reads these. The following conditions will be recognized depending on which microswitch is switched on

  1. There is no key inserted
  2. Key in the rest position = S-contact
  3. Key pushed

The ignition and the engine are turned on or off when the key is pushed in depending on the condition of the brake pedal or the clutch pedal.

Terminal Control with Advanced Key

There are 2 microswitches inside the access/start authorization switch -E408-. The comfort system central control module -J393- reads these. The button will be recognized as being pressed when they are switched ground. The ignition and the engine are turned on or off when the button is pushed in depending on the condition of the brake pedal or the clutch pedal.

The comfort system central control module -J393- sends the information to the CAN Bus via the terminal status. For more information, refer to the access/start authorization System Description. On Board Diagnostic

Scheme 7

Scheme 7
Scheme 7
  1. E408 - Access/Start Authorization Button
  2. E415 - Access/Start Authorization Switch
  3. J393 - Comfort System Central Control Module
  4. J519 - Vehicle Electrical System Control Module
  5. A - CAN-bus Comfort
  6. B - Wire Connection

VEHICLE EXTERIOR LAMPS CONDITION

The position of the headlamp switch -E1- as well as the signal from the rear fog lamp button -E314- and from the fog lamp button -E315- are sent to the vehicle electrical system control module -J519- via the LIN bus These control the front lighting for the vehicle. The lamps on the back of the vehicle are controlled by the comfort system central control module -J393-, which receives the lamp information from the vehicle electrical system control module -J519- via the CAN-bus.

If the vehicle has a rain/light recognition sensor -G397-, then the exterior lamps are controlled by headlamp switch when it is set to AUTO based on the brightness/darkness information, which the sensor sends to the vehicle electrical system control module -J519- via the LIN-bus.

For more information regarding how the vehicle exterior lamps are controlled, refer to On Board Diagnostic .

Scheme 8

Scheme 8: VEHICLE EXTERIOR LAMPS CONDITION
Scheme 8: VEHICLE EXTERIOR LAMPS CONDITION
  1. E1 - Headlamp Switch
  2. E314 - Rear Fog Lamp Button
  3. E315 - Fog Lamp Button
  4. G397 - Rain/Light Recognition Sensor
  5. J393 - Comfort System Central Control Module
  6. J519 - Vehicle Electrical System Control Module
  7. A - CAN-Bus Comfort
  8. B - Wire Connection
  9. C - LIN-Bus

SERVICE INFORMATION

The condition of the access/start authorization switch -E415- and of access/start authorization button -E408- can be displayed in the comfort system central control module -J393- measured value blocks (address 46 - Comfort System central module).

The condition of the door contacts can be displayed in the access/start authorization measured value blocks (address 05 - access/start authorization in - J393).

The condition of the headlamp switch -E1- and the brightness measured by the rain/light recognition sensor -G397- can be displayed in the vehicle electrical system control module -J519- measured value blocks (address 09 - central electric).

Terminal 30G supplies the voltage from the vehicle electrical system control module -J519- to the front interior lamp -W1-, the reading lamps -W13-, -W19-, -W47- and -W48-, the vanity mirror illumination bulbs -L31- and the glove compartment lamp -W6-.

The vehicle electrical system control module -J519- switches on terminal 30G under the following conditions

RequirementNote
The vehicle is unlocked from the outside.Terminal 30G will switch off again 30 seconds after the vehicle has been unlocked but none of the doors have been opened.
The ignition is on.
A door was opened.Terminal 30G switches off after 30 seconds after the last door has been closed and none of the other switch-on requirements have been met. If none of the other switch-on requirements have been met, then terminal 30G will stay on for 10 minutes maximum. The timer resets each time an additional door is opened and terminal 30G will stay on for another 10 minutes. If the 10 minute switch-on time has already run out, and then another door is open, or the door is closed and then opened again, terminal 30G will switch on for 10 minutes.
Terminal 30G switches on whenever the vehicle central locking system is not in the SAFE mode.When a terminal 30G electrical consumer is switched off and no other switch-on requirement is met, then terminal 30G will switch off immediately. Terminal 30G will switch off after 60 minutes once the ignition is turned off to prevent the battery from being discharged if an interior lamp is left on. The time resets once the consumer is switched off. If an electrical consumer is then switched on again, terminal 30G will switch on for 60 minutes. This is also the case if the first consumer has been on for longer than 60 minutes.
The airbag has deployed in a crash.The airbag control module -J234- evaluates the signals from the crash sensors and sends this information to the comfort system central control module -J393- via the CAN Bus. The CAN Bus then tells the vehicle electrical system control module -J519- that a crash has occurred. In this case, the conditions for terminal 30G to switch off will not apply. Terminal 30G remains on until the comfort system central control module -J393- receives the information regarding the crash.

Terminal 30G switches off under the following conditions

RequirementNote
The vehicle is in the SAFE mode.
The ignition is switched off.Terminal 30G will switch off after 30 seconds if none of the switch-on conditions are active.
The maximum switch-on duration exceeds 60 minutes with the ignition turned off.

INTERIOR LIGHTING

Components

  1. Vehicle Electrical System Control Module -J519
  2. Interior Lighting Switch -E317
  3. Front Interior Light -W1
  4. Front Passenger Map/Reading Light -W13
  5. Driver Map/Reading Light -W19
  6. Left Rear Interior Light -W47
  7. Right Rear Interior Light -W48

Function Description

The interior lighting switch -E317- controls the interior lighting. This includes 3 different switch-on conditions

  1. I (= on)
  2. O (= off)
  3. Center position (= door contact)

Position O

The voltage supply to the interior lamps is interrupted when the O position is selected. The reading lamps can be turned on by pressing the read lamp button.

Position I

In position I, the interior lamps (the front interior lamp -W1-, the driver and front passenger reading lamps, as well as the left and right rear interior lamps) receive a constant supply of voltage. The interior lamps work whenever the ignition is on (terminal 30G). Refer to chapter 2.1 for terminal 30G switch-on/switch-off conditions.

If the interior lighting switch -E317- is turned the I position when terminal 30G is switched off and no other electrical consumer is on, then the vehicle electrical system control module -J519- will recognize if a consumer is then switched on and terminal 30G will switch on.

Door Contact Position

When in the door contact position, the interior lamps are supplied with electricity via the dimming output terminal in the vehicle electrical system control module -J519-. This output switches the dimming on and off.

The interior lamps will switch on when the switch is in the door contact position under the following conditions

RequirementNote
The vehicle is unlocked from the outsideTerminal 30G will switch off again 30 seconds after the vehicle has been unlocked but none of the doors have been opened.
A door was opened
The key is removed and the access/start authorization button -E408- switches off the S-contact.The interior lamps will turn off after 30 seconds if a door is not opened and if the ignition remains turned off.
The airbag has deployed in a crashIn this case, the conditions for interior lamps in the door contact position to switch off will not apply. The interior lamp will remain on until the crash status is cancelled.

The interior lamps will switch off when the switch is in the door contact position under the following conditions

RequirementNote
The vehicle is locked from the outside
The doors are closed and the ignition is switched on
The 10 minute maximum switch-on time is exceeded with the ignition turned offThe timer resets when another door is opened and the interior lamps remains active for another 10 minutes. If the 10 minute switch-on time was already exceeded and then a door was opened or closed and then opened again, the interior lamps switches on again for 10 minutes.
The doors are closedWhen the ignition is turned off, the interior lamps will switch off 30 seconds after the last door is closed When the ignition is turned on, the interior lamps will go out immediately after the last door is closed

READING LAMPS

Components

  1. Vehicle Electrical System Control Module -J519
  2. Driver Reading Lamp Button -E457
  3. Front Passenger Reading Lamp Button -E458
  4. Left Rear Reading Lamp Switch -E454
  5. Right Rear Reading Lamp Switch -E455
  6. Front Passenger Map/Reading Light -W13
  7. Driver Map/Reading Light -W19
  8. Left Rear Interior Light -W47
  9. Right Rear Interior Light -W48

Function

If the central locking is not in the SAFE mode, then it possible to switch the reading lamps on and off individually using the buttons. The lamp is supplied with electricity when the button is pushed.

When one of the reading lamp buttons is pushed when terminal 30G is off and there are no other electrical consumers on, the vehicle electrical system control module will recognize when an electrical consumer is switched on and it will activate terminal 30G.

GLOVE COMPARTMENT LAMP

Components

  1. Vehicle Electrical System Control Module -J519
  2. Glove Compartment Lamp Switch -E26- (special equipment)
  3. Glove Compartment Lamp -W6- (special equipment)

Function

If the central locking is not in the SAFE mode, then the glove compartment lamp -W6- will come on when the glove compartment is opened. Opening the glove compartment automatically turns on the glove compartment lamp switch -E26- and supplies the electricity to the glove compartment lamp -W6-.

If the glove compartment is opened when terminal 30G is off and no other electrical consumer is on, then the vehicle electrical system control module -J519- will recognize when an electrical consumer is switched on and it will activate terminal 30G.

VANITY MIRROR ILLUMINATION

Components

  1. Vehicle Electrical System Control Module -J519
  2. Driver Vanity Mirror Lamp Contact Switch -F147
  3. Front Passenger Vanity Mirror Lamp Contact Switch -F148
  4. Vanity Mirror Illumination Bulb -L31- Driver Side
  5. Vanity Mirror Illumination Bulb -L31- Front Passenger Side

Function

If the central locking is not in the SAFE mode, then the vanity mirror illuminiation bulb -L31- in the headliner comes on when the sun visor is folded down and mirror cover is moved to the side.

The driver vanity mirror lamp contact switch -F147- and the front passenger vanity mirror lamp contact switch recognize that the sun visor is folded down and the mirror cover has been moved to the side.

If one of the vanity mirror illumination bulbs is on when terminal 30G is off and no other electrical consumer is on, then the vehicle electrical system control module -J519- will recognize when an electrical consumer is switched on and it will activate terminal 30G.

The condition of terminal 30G can be displayed in a vehicle electrical system control module -J519- measured value block.

Terminal 30G can be switched off or the interior illumination can be dimmed by the actuator test in the vehicle electrical system control module -J519-.

Terminal 30G will not be activated if the switch-off stage in the energy management system is at level 2, 3 or 4.

FOOTWELL LIGHTING

Components

  1. Vehicle Electrical System Control Module -J519
  2. Left Front Footwell Illumination Bulb -L151- (special equipment)
  3. Right Front Footwell Illumination Bulb -L152- (special equipment)
  4. Left Rear Footwell Lamp -W45- (special equipment)
  5. Right Rear Footwell Lamp -W46- (special equipment)

Function

The footwell lighting serves as a entry/exit illumination. The footwell illumination consists of the left and right front footwell illumination bulb and the left and right rear footwell lamps.

The vehicle electrical system control module -J519- turns on the interior lamps and is synchronized wit the door contact switch, refer to chapter 2.2.2. There are some exceptions

  1. If one of the front doors is opened and activates the interior lamp, then only the front footwell lamps are controlled.
  2. If one of the rear doors is opened and activates the interior lamp, then only the rear footwell lamps are controlled.

The front footwell lamps are controlled together with the rear footwell lamps.

Service Information

The front and rear footwell lamps have LEDs and can be controlled by a actuator test in the vehicle electrical system control module -J519-.

The footwell illumination will not be activated if the switch-off stage in the energy management system is at level 2, 3 or 4.

LUGGAGE COMPARTMENT LAMP

Components

  1. Comfort System Central Control Module -J393
  2. ABS Control Module -J104
  3. Rear Lid Alarm Switch -F123
  4. Luggage Compartment Light -W3
  5. Right Front ABS Wheel Speed Sensor -G45
  6. Left Front ABS Wheel Speed Sensor -G47
  7. Right Rear ABS Wheel Speed Sensor -G44
  8. Left Rear ABS Wheel Speed Sensor -G46

Function

The luggage compartment lamp -W3- comes on when the rear lid is opened. The comfort system central control module -J393- controls the luggage compartment lamp -W3-.

The trunk lid alarm switch -F123- determines the condition of the rear lid, which is then read by the comfort system central control module -J393-.

In addition to this, the vehicle speed is needed, which is determined by the ABS control module -J104- from the RPM sensor signals and is then sent to the comfort system central control module -J393- via the CAN Bus.

The signals from all four RPM sensors, or just the front RPM sensors, are used on quattro vehicles.

The luggage compartment lamp -W3- goes out depending on the ignition under the following conditions

Switch-off requirements when the ignition is off

RequirementNote
The rear lid is closed.
The maximum 10 minute switch-on time is exceeded.The luggage compartment lamp -W3- comes on when: A door was opened or The ignition is switched on, or the rear lid is closed and then opened again

Switch-off requirements when the ignition is on

RequirementNote
The rear lid is closed.
The vehicle speed exceeds 2 km/h.The luggage compartment lamp -W3- comes on again when the vehicle speed goes below 1 km/h. A door was opened or the rear lid is closed and then opened again

Scheme 9

Scheme 9
Scheme 9
  1. F123 - Rear Lid Alarm Switch
  2. G44 - Right Rear ABS Wheel Speed Sensor
  3. G45 - Right Front ABS Wheel Speed Sensor
  4. G46 - Left Rear ABS Wheel Speed Sensor
  5. G47 - Left Front ABS Wheel Speed Sensor
  6. J104 - ABS Control Module
  7. J393 - Comfort System Central Control Module
  8. W3 - Luggage Compartment Light
  9. A - Can Bus
  10. B - Wire Connection

Service Information

If communication with the ABS control module -J104- is not possible or the speed signal received is not correct, the function of the speed-dependant control luggage compartment illumination will not work.

The luggage compartment illumination will not be activated if the switch-off stage in the energy management system is at level 2, 3 or 4.

The luggage compartment lamp -W3- can be controlled by an actuator test in the comfort system central control module -J393- (address 46 - comfort system central control module).

The following buttons and displays are included

  1. Vehicle electrical system control module -J519
  2. Photo transistor inside the instrument cluster control module -J285
  3. Instrument panel and switch illumination dimmer switch -E20- in the headlamp switch -E1

The buttons on the symbols and the displays are illuminated to make it easier for the vehicle occupants to see them. The illumination for some switches is dependant on the outside light (terminal 58s), some are dependant on the outside light and the ignition (terminal 58st) and the display illumination (terminal 58d).

The vehicle electrical system control module -J519- controls the button and display illumination and is call the dimming master. The dim master calculates the dimming values for terminals 58s, 58st and 58d based on the outside brightness and the intensity set by the driver.

The instrument cluster control module -J285- determines the ambient brightness. The instrument cluster has a photo transistor that senses the brightness. The instrument cluster control module -J285- filters the value and then sends it to the vehicle electrical system control module -J519- via the CAN Bus.

The driver uses the instrument panel and switch illumination dimmer switch -E20-, which is integrated in the headlamp switch -E1-, to set the brightness intensity. The setting is sent to the vehicle electrical system control module -J519- via the LIN Bus.

The dimming values are independent of each other and have different values.

The dimming values, terminal 58s and terminal 58st are emitted by the vehicle electrical system control module -J519- both as discrete PWM signals and as Bus signals. The terminal 58d dimming value is emitted as a Bus signal.

TERMINAL 58S

Additional Components

  1. Headlamp Switch -E1
  2. Rain/Light Recognition Sensor -G397- (special equipment)

Function

The terminal 58s button illumination depends on the status of the vehicle exterior illumination. The parking lamp (terminal 58) must at least be on.

The following switch-on conditions are possible

  1. The headlamp switch -E1- must be either in the parking lamp position of the low beam position.
  2. When the headlamp switch -E1- is turned to AUTO, the rain/light recognition sensor -G397- recognizes the darkness.
  3. The headlamp switch -E1- is turned to AUTO, the ignition is turned on and the fog lamp button -E315- is pressed. The parking lamp and the low beam come on automatically when the fog lamp is turned on.
  4. The headlamp switch -E1- is turned to AUTO, the ignition is turned on and the fog lamp button -E314- is pressed. The parking lamp and the low beam come on automatically when the fog lamp is turned on.

When the daytime running lamps as well as the rain/light recognition sensor are on terminal 58s will not be on. Refer to On Board Diagnostic

Terminal 58s will turn off at the very latest 30 minutes after the ignition is turned off to prevent draining the vehicle battery. Opening the driver door, turning the ignition on and off as well as turning off the exterior lamps will reset the time and terminal 58s will remain on for another 30 minutes. The timer runs out, then terminal 58s switches on again for 30 minutes.

The PWM signal from the vehicle electrical system control module -J519- illuminates the following components (if installed)

  1. Headlamp Adjuster -E102
  2. Left Rear Heated Seat Regulating Switch -E128
  3. Right Rear Heated Seat Regulating Switch -E129
  4. Sunroof Regulator -E139
  5. Rear Window Shade Switch -E149
  6. ASR/ESP Button -E256
  7. Garage Door Opener Control Head -E284
  8. Interior Lighting Switch -E317
  9. Left Rear Reading Lamp Switch -E454
  10. Right Rear Reading Lamp Switch -E455
  11. Driver Reading Lamp Button -E457
  12. Front Passenger Reading Lamp Button -E458
  13. Valet Parking Lock Button -E536
  14. Electromechanical Parking Brake Button -E538
  15. Cigarette Lighter Illumination -L28
  16. Socket Illumination -L42
  17. Left Instrument Panel Vent Illumination Bulb -L67
  18. Center Instrument Panel Vent Illumination Bulb -L68
  19. Right Instrument Panel Vent Illumination Bulb -L69
  20. Temperature Control Switch Illumination Bulb -L93
  21. Telephone Base Plate -R126
  22. LEDs in the interior lamp/front reading lamp

All other illumination, which is connected to terminal 58s, are controlled by the control modules based dimming values received by the CAN or LIN Bus.

Service Information

As long as the headlamp switch -E1- is set to AUTO and the front or rear fog lamps are on, the exterior lamps will not turn off automatically because the rain/light recognition sensor -G397- is still recognizing the outside brightness information.

Terminal 58s is controlled by an actuator test in the vehicle electrical system control module -J519-.

The dimming value of terminal 58s cab be displayed in the vehicle electrical system control module -J519- measured values block.

TERMINAL 58ST

Additional Components

  1. Headlamp switch -E1
  2. Rain/light recognition sensor -G397- (special equipment)

Function

The terminal 58st button illumination is active when the ignition of the vehicle exterior illumination is on.

Terminal 58st also applies to the switch-on/switch-off condition for the interior lighting in the door contract position.

When the vehicle exterior lighting or the ignition is turned off, then terminal 58st will switch off 30 seconds afterwards.

Terminal 58st will turn off 30 minutes after the ignition is turned off to prevent draining the vehicle battery. Opening the driver door, turning the ignition on and off as well as turning off the exterior lamps will reset the time and terminal 58st will remain on for another 30 minutes. The timer runs out, then terminal 58st switches on again for 30 minutes.

The PWM signal from the vehicle electrical system control module -J519- illuminates the following components (if installed)

  1. Access/Start Authorization Button -E408
  2. Tiptronic Switch -F189

All other illumination, which is connected to terminal 58st, are controlled by the control modules based dimming values received by the CAN or LIN Bus.

Service Information

Terminal 58st is controlled by an actuator test in the vehicle electrical system control module -J519-.

The dimming value of terminal 58st cab be displayed in the vehicle electrical system control module -J519- measured value blocks.

TERMINAL 58D

Function

When the CAN-bus is active, then an actual dimming value will be transmitted to the CAN-bus for the display illumination, terminal 58d by the vehicle electrical system control module -J519-. The control module decide under which conditions to adjust the illumination of the different displays.

Service Information

The dimming value of terminal 58d cab be displayed in the vehicle electrical system control module -J519- measured value blocks.

EMERGENCY FLASHER BUTTON SEARCH ILLUMINATION

Additional Components

  1. Comfort System Central Control Module -J393
  2. Headlamp Switch -E1
  3. Warning Light Button -E229
  4. Emergency Flasher Indicator Lamp -K6

Function

When the emergency flashers are off, the emergency flasher indicator lamp -K6- is dimmed by the vehicle electrical system control module -J519- via a PWM signal, if terminal 58st is active.

The dimming function works as the search illumination in this case. The vehicle electrical system control module -J519- calculates the dimming value using an internal algorithm taken from the dimming value for terminal 58st.

When the emergency flashers are on, the emergency flasher indicator lamp -K6- is controlled by the vehicle electrical system control module -J519-. The indicator lamp is controlled by a 100% PWM during the on phase. During the off phase, the PWM signal is 0%.

Activating the emergency flashers works as follows

The condition of the emergency flasher button -E229- is evaluated by the vehicle electrical system control module -J519-.

When the button is recognized as being on, then the information is sent to the comfort system central control module -J393- via the CAN Bus, which serves as the blink master. This then sends tells the emergency flasher indicator lamp -J519-, via the CAN Bus, which frequency should be used to control the emergency flasher indicator lamp -K6-.

The emergency flashers are automatically turned on by the comfort system central control module -J393- during emergency braking of if there a crash and airbag deploys and the blinking frequency information is sent to the vehicle electrical system control module -J519-.

Scheme 10

Scheme 10
Scheme 10
  1. E1 - Headlamp Switch
  2. E20 - Instrument Panel Illumination Dimmer Switch
  3. E229 - Warning Light Button
  4. G397 - Rain/Light Recognition Sensor
  5. J285 - Instrument Cluster Control Module
  6. J393 - Comfort System Central Control Module
  7. J519 - Vehicle Electrical System Control Module
  8. K6 - Emergency Flasher Indicator Lamp
  9. A - CAN-bus
  10. B - Wire Connection
  11. C - LIN-bus

Service Information

The emergency flasher indicator lamp -K6- can be controlled by an actuator test in the vehicle electrical system control module -J519-.

The dimming value can be displayed in the vehicle electrical system control module -J519- measured values block when the emergency flasher indicator lamp -K6- is on.

A005A4031-030110

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