- 1 - Fresh air blower control unit -J126-, under the dash panel on the right, behind the storage box
- 2 - Control unit for cornering light and headlight range control -J745-, under dash panel on right, behind glove box
- 3 - Convenience systems central control unit -J393-
- 4 - Radio -R-, in the center console
- 5 - Control unit with display for radio navigation system -J503-, in center console
- 6 - Front passenger door control unit -J387-
- 7 - Airbag control unit -J234-
- 8 - Sliding sunroof control unit -J245-
- 9 - Seat occupied recognition control unit -J706-
- 10 - TV tuner -R78-
- 11 - Telephone transmitter and receiver -R36-
- 12 - Mobile telephone control electronics control unit -J412-
- 13 - Digital satellite radio tuner -R190-
- 14 - Rear right door control unit -J389-, on the inside of the rear right door
- 15 - Multimedia system control unit -J650-, under front center armrest
- 16 - Electromechanical parking brake control unit -J540-
- 17 - Sunroof blind control unit -J394-
- 18 - Rear left door control unit -J388-
- 19 - Amplifier -R12-
- 20 - Digital sound system amplifier -R184-
- 21 - Control unit for seat and steering column adjustment with memory function -J136-
- 22 - Front seat heating control unit -J774-
- 23 - Climatronic control unit -J255-, in the Climatronic operating and display unit
- 24 - Air conditioner control unit -J301-, in air conditioner control and display unit
- 25 - Multifunction steering wheel control unit -J453-, in multifunction steering wheel
- 26 - Driver door control unit -J386-
- 27 - Steering column control unit -J527-
- 28 - Data bus diagnostic interface -J533-
- 29 - Control unit in dash panel insert -J285-, in dash panel insert
- 30 - Immobilizer control unit -J362-, in dash panel insert -K-
- 31 - Automatic parking aid control unit -J791-
- 32 - Onboard supply control unit -J519-
Installation location
- 1 - Connector, 6-pin -T6rd-
- 2 - Connector, 18-pin -T18-
- 3 - Connector, 8-pin -T8h-
- 4 - Connector, 6-pin -T6-
- 5 - Connector, 18-pin -T18zv-
- 6 - Central control unit for convenience systems -J393-
- 7 - Glove box lighting switch -E26-
- 8 - Connector, 10-pin, -T10k-
Installation location
Data bus diagnostic interface -J533-, In the driver's footwell, next to the center console -arrow-.
Installation location
Front passenger door control unit -J387-, in door -arrow-
Installation location
- 1 - Sliding sunroof control unit -J245-
- 2 - Sunroof blind control unit -J394-
Location
- A - Front passenger door control unit -J387-
Connector Location
- B - Connector, 32-pin -T32b-
- C - Connector, 16-pin -T16g-
- D - Connector, 20-pin -T20b-
Installation location
- 1 - Airbag control unit -J234-
- 2 - TV tuner -R7B-
- 2 - Telephone transmitter and receiver -R36-
- 2 - Control unit for mobile phone control electronics -3412
- 2 - Digital satellite radio tuner -R190-
- 3 - Electromechanical parking brake control unit -J540-
- 4 - Amplifier -R12-
- 4 - Digital sound system amplifier -R184-
Installation location
- 1 - Seat occupied recognition control unit -J706-
Installation location
- 1 - Front seat heating control unit -3774-
- 2 - Control unit for seat and steering column adjustment with memory function -J136-
Installation location
- 1 - Driver door control unit -J386-
- 2 - Crash sensor for driver's side airbag -G179-
Installation location
- 1 - Rear left door control unit -J338-
Connector Location
- A - Driver door control unit -J386-
- B - Connector, 32-pin -T32a-
- C - Connector, 16-pin -T16a-
- D - Connector, 20-pin -T20a-
Connector Location
- A - Front passenger door control unit -J387-
- B - Connector, 32-pin -T32b-
- C - Connector, 16-pin -T16g-
- D - Connector, 20-pin -T20b-
Installation location
- 3 - Digital satellite radio tuner -R190-
- 1 - Connector, 8-pin -T8u-
- 2 - Connector, 8-pin -T8t-
- 4 - Connector, 1-pin -T1sa-
Connector Location
- 1 - Connector, 24-pin -T24-
- 2 - Amplifier -R12-
- 3 - Connector, 24-pin -T24-
Installation location
- 1 - Automatic parking aid control unit -J791-
- 2 - Parking aid warning buzzer, front -H22-
- 3 - Steering column control unit -J527-
- 4 - Onboard supply control unit -J519-
- 5 - Fuse box C -SC-
Connector Location
- 1 - Automatic parking aid control unit -J791-
- 2 - Connector, 16-pin -T16r-
- 3 - Connector, 12-pin -T12ta-
- 4 - Connector, 12-pin -T121a-
Connector Location
A = steering column control unit
B = airbag connector socket
- 1 - Airbag 1 -
- 2 - Airbag 1 +
- 3 - Airbag 2+
- 4 - Airbag 2 -
C = connector socket for direction indicators and cruise control
- 1 - Cruise control power supply, cl. 15
- 2 - Cruise control off.
- 3 - Reset (+), Set (•)
- 4 - Cruise control on/off
- 5 - Ground cruise control
- 6 - Illumination of the cruise control keys, cl. 58
- 7 - Light signal (flashing headlights)
- 8 - high beam
- 9 - Direction indicators
- 10 - Mass of direction indicators
D = Connector, 20-pin, -T20d- on wiring harness
- 1 - Not used
- 2 - Not used
- 3 - Not used
- 4 - Not used
- 5 - Not used
- 6 - Not used
- 7 - Not used
- 8 - Not used
- 9 - Not used
- 10 - Not used
- 11 - Data bus diagnostic interface, drive CAN bus, Low
- 12 - Data bus diagnostic interface, drive CAN bus, High
- 13 - GRA-Schalter ein/aus
- 14 - Data bus diagnostic interface, convenience CAN bus, High
- 15 - Data bus diagnostic interface, convenience CAN bus, Low
- 16 - Multifunction switch, Tiptronik
- 17 - Terminal 15
- 18 - Terminal 50
- 19 - Terminal 30
- 20 - Terminal 31
E = connector, 4-pin, -T4k- on wiring harness
- 1 - Airbag 1 -
- 2 - Airbag 1 +
- 3 - Not used
- 4 - Not used
F = Socket for starter/ignition switch and ignition key lock device
- 1 - Not used
- 2 - Not used
- 3 - Ignition key lock on, terminal 30
- 4 - Mass of the device for blocking the key in the ignition lock
- 5 - Hb used
- 6 - Not used
- 7 - Output, starter/ignition switch, terminal 50
- 8 - Starter/ignition switch, terminal 30
- 9 - Output, starter/ignition switch, terminal S
- 10 - Output, starter/ignition switch, terminal X
- 11 - Output, starter / ignition switch, terminal P
- 12 - Output, starter/ignition switch, terminal 15
G = Socket for wiper connector, wiper interval potentiometer and multifunction display
- 1 - Wiper switch signal
- 2 - Mass of wipers
- 3 - Wiper signal, rear window washer
- 4 - Not used
- 5 - Multifunction display signal
- 6 - Mass of the multifunction display, wiper interval potentiometer
- 7 - Wiper interval signal
- 8 - Not used
H = Steering angle sensor connector socket
- 1 - Light barrier 5
- 2 - Light barrier 3
- 3 - Light barrier 1
- 4 - Power supply 12 V
- 5 - Power supply 5 V
- 6 - Light barrier 6
- 7 - Light barrier 4
- 8 - Light barrier 2
- 9 - Mass
- 10 - Light barrier 7
I = connection socket for spiral cable -T10x-
- 1 - Not used
- 2 - Not used
- 3 - Airbag 1 +
- 4 - Airbag 1 -
- 5 - Airbag 2+
- 6 - Airbag 2 -
- 7 - Weight of spiral cable, multifunction steering wheel and horn
- 8 - Signal GRA Off, sound signal
- 9 - LIN bus or steering wheel heating temperature sensor
- 10 - Power supply for terminal 15 of the multifunction steering wheel
Connector Location
A = connector, 11-pin:
- 1 - Terminal 30
- 2 - Dipped beam lamp of the right headlight / control unit of the discharge lamp of the right headlight
- 3 - High beam lamp of the right headlight (except vehicles with xenon headlights)
- 4 - Right fog light bulb
- 5 - Dipped beam damper of the right headlight (xenon headlights)
- 6 - Front right turn signal lamp
- 7 - Lamp of the front left side light
- 8 - Left position lamp 2
- 9 - Weight
- 10 - Fuel pump control unit
- 11 - Power supply role, cl. 50
B = connector, 12-pin
- 1 - Right reversing light bulb, electrochromic interior mirror
- 2 - Not used
- 3 - Not used
- 4 - Left fog light bulb
- 5 - Lamp of the right brake light and marker light
- 6 - Not used
- 7 - Front left footwell lamp, front right footwell lamp
- 8 - Not used
- 9 - Lamp of the right rear side light / brake light
- 10 - Rear right turn signal lamp
- 11 - Left interior lampshade, right interior lampshade, key illumination lamp
- 12 - Terminal 58d
C = connector, 12-pin
- 1 - Front seat heating control unit -J774-, seat heating deactivated
- 2 - Lamp of the left brake light and marker light
- 3 - Not used
- 4 - Not used
- 5 - Not used
- 6 - Not used
- 7 - Not used
- 8 - License plate lighting
- 9 - Upper brake light lamp
- 10 - Lamp of the left rear side light / brake light
- 11 - Rear left turn signal lamp
- 12 - Left reversing lamp
D = connector, 11-pin
- 1 - Terminal 30
- 2 - Left fog lamp
- 3 - Left high beam lamp
- 4 - Left low beam lamp
- 5 - Mass
- 6 - Dipped beam damper of the left headlight
- 7 - Not used
- 8 - Headlamp cleaning relay
- 9 - Lamp of the right side light 2
- 10 - Lamp right front parking light
- 11 - Front left turn signal lamp
E = connector, 16-pin
- 1 - Light switch, terminal 58
- 2 - Stoplight switch
- 3 - Not used
- 4 - Not used
- 5 - Not used
- 6 - Fog lamp switch
- 7 - Mass (only vehicles with manual gearbox for non-American markets)
- 7 - Clutch pedal position sensor (only vehicles with manual gearbox for american markets)
- 8 - Light switch, terminal 56
- 9 - Not used
- 10 - Not used
- 11 - Not used
- 12 - Not used
- 13 - Rear fog light switch
- 14 - Light switch (dipped beam assistant)
- 15 - Not used
- 16 - Light switch (lighting for daytime traffic)
F = connector, 8-pin
- 1 - Power supply relay terminal 50
- 2 - Not used
- 3 - Wiper motor, rain and light sensor (LIN bus)
- 4 - Generator
- 5 - Hood limit switch
- 6 - Reversing light switch
- 7 - Terminal 30
- 8 - Terminal 31
G = connector, 12-pin
- 1 - Steering column control unit, 1 terminal 50
- 2 - Warning lamp warning light
- 3 - Not used
- 4 - Brightness control for switches and instrument cluster illumination
- 5 - Not used
- 6 - Not used
- 7 - CAN bus comfort Low
- 8 - CAN bus comfort High
- 9 - Hazard light switch
- 10 - Switch and instrument cluster backlight brightness control
- 11 - Steering column control unit, terminal 15
- 12 - Switch and instrument cluster backlight brightness control
H = connector, 12-pin (connector H is not used)
I = connector, 2-pin
- 1 - Terminal 30 fuses
- 2 - Terminal 75a
J = connector, 6-pin
- 1 - Washer pump fuse
- 2 - Washer pump
- 3 - Horn fuse
- 4 - Washer pump
- 5 - Mass
- 8 - High tone signal, low tone signal
K = connector, 10-pin
- 1 - Rear window heating element
- 2 - Not used
- 3 - Not used
- 4 - Not used
- 5 - Fuse, terminal 30
- 6 - Rear window heating fuse
- 7 - Not used
- 8 - Not used
- 9 - Not used
- 10 - Terminal 30g
L = connector, 2-pin
- 1 - Fuse, terminal 30
- 2 - Salon, terminal 15
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