Electrical diagrams of the car Audi A4 B8
Access and engine start authorization switch, Fuse 6 in fuse box D
Access and engine start authorization switch, Fuse 6 in fuse box D E415 Access and engine start authorization switch ST2 Fuse box 2 SD6 Fuse 6 in fuse box D...
Access and engine start authorization switch, Fuse 6 in fuse box D E415 Access and engine start authorization switch ST2 Fuse box 2 SD6 Fuse 6 in fuse box D...
Instrument Cluster Control Unit, Radio Clock Receiver Module
Instrument Cluster Control Unit, Radio Clock Receiver Module J285 Instrument cluster control unit J489 Radio clock receiver module J533 Data bus diagnostic...
Instrument Cluster Control Unit, Radio Clock Receiver Module J285 Instrument cluster control unit J489 Radio clock receiver module J533 Data bus diagnostic...
Fuel level sensor; Fuel lift pump; Instrument cluster control unit
Fuel level sensor; Fuel booster pump; Instrument cluster control unit G Fuel level sensor G5 Tachometer G6 Fuel booster pump G21 Speedometer G169 Fuel level...
Fuel level sensor; Fuel booster pump; Instrument cluster control unit G Fuel level sensor G5 Tachometer G6 Fuel booster pump G21 Speedometer G169 Fuel level...
Steering column control unit
Steering column control unit J527 Steering column control unit ST1 Fuse box 1 ST2 Fuse box 2 SD5 Fuse 5 in fuse box D SD12 Fuse 12 in fuse box D T16f...
Steering column control unit J527 Steering column control unit ST1 Fuse box 1 ST2 Fuse box 2 SD5 Fuse 5 in fuse box D SD12 Fuse 12 in fuse box D T16f...
Turn signal switch; Cruise control switch; Steering column control unit
Turn signal switch; Cruise control switch; Steering column control unit E2 Turn signal switch E45 Cruise control switch F138 Airbag coil cable with slip ring...
Turn signal switch; Cruise control switch; Steering column control unit E2 Turn signal switch E45 Cruise control switch F138 Airbag coil cable with slip ring...
Intermittent wiper switch; Start-stop button...
Intermittent wiper switch; Start-stop mode button; Steering column control unit; Electronic steering column lock control unit D Ignition and starter switch E22...
Intermittent wiper switch; Start-stop mode button; Steering column control unit; Electronic steering column lock control unit D Ignition and starter switch E22...
Hood Switch; High Tone Horn; Low Tone Horn; Horn Relay
Hood limit switch; High tone signal; Low tone signal; Horn relay F266 Hood limit switch H2 High tone signal H7 Low tone signal J413 Horn relay J519 On-board...
Hood limit switch; High tone signal; Low tone signal; Horn relay F266 Hood limit switch H2 High tone signal H7 Low tone signal J413 Horn relay J519 On-board...
Rain and light sensor; Windscreen wiper motor control unit
Rain and light sensor; Windscreen wiper motor control unit G397 Rain and light sensor J400 Windscreen wiper motor control unit J519 On-board network control...
Rain and light sensor; Windscreen wiper motor control unit G397 Rain and light sensor J400 Windscreen wiper motor control unit J519 On-board network control...
Gear shift sensor; Front left brake pad wear sensor...
Gear position sensor; Front left brake pad wear sensor; Headlight washer pump; Left washer nozzle heating resistor; Right washer nozzle heating resistor F208...
Gear position sensor; Front left brake pad wear sensor; Headlight washer pump; Left washer nozzle heating resistor; Right washer nozzle heating resistor F208...
Low Brake Fluid Warning Sensor; Outside Temperature Sensor...
Low Brake Fluid Level Warning Sensor; Outdoor temperature sensor; Low coolant level indicator sensor; Washer fluid reservoir level sensor; Rear window wiper...
Low Brake Fluid Level Warning Sensor; Outdoor temperature sensor; Low coolant level indicator sensor; Washer fluid reservoir level sensor; Rear window wiper...
Driving Mode Profile Switch Block
Driving Mode Profile Switch Block E592 Driving Mode Profile Switch Block E593 Key 1 in the driving mode profile switch block E594 Key 2 in the driving mode...
Driving Mode Profile Switch Block E592 Driving Mode Profile Switch Block E593 Key 1 in the driving mode profile switch block E594 Key 2 in the driving mode...
Light switch; Hazard warning light switch
Light switch; Hazard warning light switch E1 Light switch E20 Switch and instrument cluster illumination dimmer E220 Hazard warning light switch E314 Rear fog...
Light switch; Hazard warning light switch E1 Light switch E20 Switch and instrument cluster illumination dimmer E220 Hazard warning light switch E314 Rear fog...
Headlight front left
Headlight front left E102 Headlight range control regulator J519 On-board network control unit L22 Left fog light bulb L174 Daytime running light on the left...
Headlight front left E102 Headlight range control regulator J519 On-board network control unit L22 Left fog light bulb L174 Daytime running light on the left...
Headlight front right
Headlight front right J519 On-board network control unit L23 Right fog light bulb L175 Daytime running light on the right MX2 Headlight front right M3 Front...
Headlight front right J519 On-board network control unit L23 Right fog light bulb L175 Daytime running light on the right MX2 Headlight front right M3 Front...
Rear left reading light switch; Vanity mirror light...
Rear left reading light button; Vanity mirror light; Front interior light; Right rear interior light E317 Interior light switch E454 Rear left reading light...
Rear left reading light button; Vanity mirror light; Front interior light; Right rear interior light E317 Interior light switch E454 Rear left reading light...
Front passenger airbag deactivation switch with key...
Front passenger airbag deactivation switch with key; Parking service button; Parking service indicator light E224 Front passenger airbag deactivation switch...
Front passenger airbag deactivation switch with key; Parking service button; Parking service indicator light E224 Front passenger airbag deactivation switch...
Glove compartment light switch; Front left footwell light...
Glove compartment light switch; Front left footwell light; Front right footwell light; Glove compartment light E26 Glove compartment light switch J519 On-board...
Glove compartment light switch; Front left footwell light; Front right footwell light; Glove compartment light E26 Glove compartment light switch J519 On-board...
12V socket
12V socket E538 Electromechanical parking brake button G538 Temperature selection potentiometer, rear J519 On-board network control unit L42 Socket...
12V socket E538 Electromechanical parking brake button G538 Temperature selection potentiometer, rear J519 On-board network control unit L42 Socket...
Adaptive cruise control control unit
Adaptive cruise control control unit J428 Adaptive cruise control control unit J519 On-board network control unit J533 Data bus diagnostic interface J769 Lane...
Adaptive cruise control control unit J428 Adaptive cruise control control unit J519 On-board network control unit J533 Data bus diagnostic interface J769 Lane...
Rear window blind switch; ASR and ESP deactivation button; Parking assistant button
Rear window shade switch; ASR and ESP deactivation key; Parking assistant button E149 Rear window shade switch E256 ASR and ESP deactivation key E266 Parking...
Rear window shade switch; ASR and ESP deactivation key; Parking assistant button E149 Rear window shade switch E256 ASR and ESP deactivation key E266 Parking...
Access and engine start authorization system key
Access and engine start authorization system key E408 Access and engine start authorization system key U519 On-board network control unit J587 Selector sensor...
Access and engine start authorization system key E408 Access and engine start authorization system key U519 On-board network control unit J587 Selector sensor...
Access and engine start authorization system button; Front left door outside handle touch sensor...
Access and engine start authorization system key; Front left door outer handle touch sensor; Front right door outer handle touch sensor; Central control unit...
Access and engine start authorization system key; Front left door outer handle touch sensor; Front right door outer handle touch sensor; Central control unit...
Central control unit for comfort systems; Left rear light...
Central control unit for comfort systems; Left rear light; Left rear light 2; Luggage compartment light J393 Central control unit for comfort systems MX3 Left...
Central control unit for comfort systems; Left rear light; Left rear light 2; Luggage compartment light J393 Central control unit for comfort systems MX3 Left...
Central control unit for comfort systems; Electric motor for central locking in the door/trunk lid
Central control unit for comfort systems; Central locking motor in door/trunk lid F124 Limit switch in the lock cylinder for the trunk lid, security alarm,...
Central control unit for comfort systems; Central locking motor in door/trunk lid F124 Limit switch in the lock cylinder for the trunk lid, security alarm,...
Central control unit for comfort systems; Right rear light; Right rear light 2
Central control unit for comfort systems; Right rear light; Right rear light 2 J393 Central control unit for comfort systems M2 Right rear side light bulb MX4...
Central control unit for comfort systems; Right rear light; Right rear light 2 J393 Central control unit for comfort systems M2 Right rear side light bulb MX4...
Sliding sunroof position regulator; Sliding sunroof control unit; Central control unit...
Sliding sunroof position regulator; Sliding sunroof control unit; Central control unit for comfort systems; Sliding sunroof drive motor E139 Sliding sunroof...
Sliding sunroof position regulator; Sliding sunroof control unit; Central control unit for comfort systems; Sliding sunroof drive motor E139 Sliding sunroof...
Security alarm sensor; Alarm siren; Comfort system central control unit...
Security alarm sensor; Alarm siren; Central control unit for comfort systems; Antenna for central locking and security alarm; Antenna amplifier 3 G578 Security...
Security alarm sensor; Alarm siren; Central control unit for comfort systems; Antenna for central locking and security alarm; Antenna amplifier 3 G578 Security...
Clutch pedal switch; Central control unit for comfort systems
Clutch pedal switch; Central control unit for comfort systems F36 Clutch pedal switch F194 Clutch pedal switch for starting the engine F305 Selector position...
Clutch pedal switch; Central control unit for comfort systems F36 Clutch pedal switch F194 Clutch pedal switch for starting the engine F305 Selector position...
Brake light switch; Central control unit for comfort systems
Brake light switch; Central control unit for comfort systems F Brake light switch J255 climatronic control unit J393 Central control unit for comfort systems...
Brake light switch; Central control unit for comfort systems F Brake light switch J255 climatronic control unit J393 Central control unit for comfort systems...
Central control unit for comfort systems
Central control unit for comfort systems J345 Trailer recognition control unit J387 Front passenger door control unit J393 Central control unit for comfort...
Central control unit for comfort systems J345 Trailer recognition control unit J387 Front passenger door control unit J393 Central control unit for comfort...
Central control unit for comfort systems — version 2
Central control unit for comfort systems - version 2 J345 Trailer recognition control unit J387 Front passenger door control unit J393 Central control unit for...
Central control unit for comfort systems - version 2 J345 Trailer recognition control unit J387 Front passenger door control unit J393 Central control unit for...
Central control unit for comfort systems; Rear curtain motor...
Central control unit for comfort systems; Rear curtain motor; Fuel filler flap locking motor; Rear window heating element C18 Glass antenna noise suppression...
Central control unit for comfort systems; Rear curtain motor; Fuel filler flap locking motor; Rear window heating element C18 Glass antenna noise suppression...
Cigarette lighter; 12V socket 2; 12V socket 3
Cigarette lighter; 12V socket 2; 12V socket 3 R126 Phone holder SF1 Fuse 1 in fuse box F SF3 Fuse 3 in fuse box F ST4 Fuse box 4 SF4 Fuse 4 in fuse box F T3g...
Cigarette lighter; 12V socket 2; 12V socket 3 R126 Phone holder SF1 Fuse 1 in fuse box F SF3 Fuse 3 in fuse box F ST4 Fuse box 4 SF4 Fuse 4 in fuse box F T3g...
This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Similar sections of other Audi car models:
Electrical equipment: Electrical circuits Audi 80 B3 (1986-1991)
Electrical equipment: Electrical circuits Audi 100 C3 (1982-1990)
Electrical equipment: Electrical circuits Audi A3 Type 8L (1996-2003)
Electrical equipment: Electrical circuits Audi A6 C5 (1997-2004)
Electrical equipment: Electrical circuits Audi Q5 Type 8R (2008-2017)
Electrical equipment: Electrical circuits Audi A2 (1999-2005)
Electrical equipment: Electrical circuits Audi 80 B3 (1986-1991)
Electrical equipment: Electrical circuits Audi 100 C3 (1982-1990)
Electrical equipment: Electrical circuits Audi A3 Type 8L (1996-2003)
Electrical equipment: Electrical circuits Audi A6 C5 (1997-2004)
Electrical equipment: Electrical circuits Audi Q5 Type 8R (2008-2017)
Electrical equipment: Electrical circuits Audi A2 (1999-2005)
Share information:
- General information
- Operating instructions
- Power unit
- Petrol engines 1.8 l
- Petrol engines 1.8/2.0 l
- Petrol engines 3.0 l
- Petrol engines 3.2 l
- Fuel system (petrol)
- Diesel engines 2.0 l (CA*)
- Diesel engines 2.0 l (CJCB)
- Diesel engines 2.7/3.0 l
- Diesel engines 3.0 l
- Fuel system (diesel)
- Transmission
- Manual gearbox 0B1
- Manual gearbox 0B2
- Manual gearbox 0B3
- Manual gearbox 0B4
- Automatic transmission 0B5
- Automatic transmission 0B6
- Automatic transmission 0AW
- All-wheel drive system
- Chassis
- Front suspension
- Rear suspension
- Brake system
- Steering system
- Body
- Exterior
- Interior
- Seats
- Doors, locks and windows
- Security system
- Heating and air conditioning
- Electrical equipment
- Audio system
- Power devices
- Equipment and devices
- Lighting and lamps
- Electrical circuits
- General information
- Introduction to manual
- Troubleshooting
- Operating instructions
- Maintenance
- Power unit
- Petrol engines 2.0 (ALT)
- Petrol engines 2.0 (TFSI)
- Petrol engines 1.8 (MPI)
- Diesel engines
- Cooling system
- Air conditioner
- Fuel and exhaust system
- Ignition system
- Starting and charging
- Transmission
- Clutch
- Manual gearbox
- Automatic gearbox
- Drive shafts
- Chassis
- Brake system
- Front suspension
- Rear suspension
- Steering
- Body
- Exterior
- Interior
- Electrical equipment
- Equipment and devices
- Lighting and signaling
- Windscreen wipers and washers
- Electrical diagrams
- Electrical diagrams (since 2007)
- General information
- Vehicle Description
- User manual
- Maintenance
- Power unit
- Gasoline engine
- Diesel engine
- Lubrication system
- Cooling system
- Supply system
- Injection system
- Exhaust system
- Ignition and control
- Transmission
- Gear box
- Clutch and drive shafts
- Chassis
- Brake system
- Car suspension
- Steering
- Body
- Heating and ventilation
- Exterior (external elements)
- Interior (internal elements)
- Electrical equipment
- Power devices
- Lighting and appliances
- Electrical circuits
- General information
- Introduction to the guide
- Car care
- Power unit
- Engine repair
- Lubrication system
- Cooling system
- Injection and control system
- Ignition system
- Power and exhaust system
- Transmission
- Clutch and drive shafts
- Car gearbox
- Chassis
- Suspension and wheels
- Steering
- Brake system
- Body
- Interior
- Exterior
- Electrical equipment
- Equipment and devices
- Lighting and signaling
- Power devices
- Electrical circuits
- General information
- Introduction to the guide
- Car care
- Maintenance (gasoline)
- Maintenance (diesel)
- Power unit
- Gasoline engines
- Diesel engines
- Engine overhaul
- Cooling system
- Fuel injection (gasoline)
- Fuel system (diesel)
- Exhaust system
- Ignition system
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Drive shafts
- Chassis
- Brake system
- Car suspension
- Steering
- Body
- Exterior
- Interior
- Doors, locks and windows
- Heating and ventilation
- Electrical equipment
- Power devices
- Equipment and devices
- Electrical circuits
- General information
- Vehicle description
- Maintenance
- Power unit
- Engine repair
- Turbocharging
- Exhaust system
- Cooling system
- Ignition system
- Fuel system
- Motronic injection system
- MPI and MPFI injection system
- Transmission
- Clutch
- Gearbox and shafts
- Chassis
- Steering
- Car suspension
- Brake system
- Wheels and tires
- Body
- Heating and ventilation
- Body parts
- Electrical equipment
- Fuses and relays
- Power devices
- Lighting and lamps
- Tools and devices
- Electrical circuits