Audi A4 B7 (2004-2009) – fuse box
Audi A4 B7 (8E, 8H) (2004-2008) – fuse box diagram
Year of production: 2004, 2005, 2006, 2007, 2008, 2009.
The cigarette lighter fuse (power socket) on the Audi A4 B7 (2004-2009) is fuse 33 in the fuse box in the passenger compartment.
Fuse box in passenger compartment
Location of the fuse box The fuse
box of the Audi A4 B7 is located on the left side of the dashboard:
To access it, open the left side door and remove the dashboard side cover by pressing down on it.
The scheme of the fuse box
| Number | Amperes [A] | Description |
|---|---|---|
| 1 | 10 A. | Air conditioning controller;
Climatronic. |
| 2 | 5A | Footwell lights |
| 3 | 5A | Heated washer nozzles |
| 4 | 5A | Cooling fan control unit |
| 5 | 10 A. | Rear roller blind;
Multi-function switch; Oil level sensor; Oil temperature sensor; Navigation system; Parking assist controller. |
| 6 | 5A | Air quality sensor;
Climatronic; Heated front seats; Air conditioning high pressure sensor; TCS / ESP button, |
| 7 | 10 A. | Traction control switch;
Clutch switch; ABS controller; Brake pedal switch. |
| 8 | 5A | Telephone;
Telephone amplifier. |
| 9 | 15A | Brake servo relay |
| 10 | 5A | Headlamp range control |
| 11 | 5A | Airbag control unit;
Airbag warning lamp. |
| 12 | 10 A. | Diagnostic connector |
| 13 | 10 A. | Control unit, steering column electronics |
| 14 | 10 A. | Brake light switch |
| 15 | 10 A. | Control unit with display in the dashboard insert;
Navigation system; CD player. |
| 16 | 5A | Garage door opener |
| 17 | 10 A. | Rain sensor;
Daytime running system; Parking assist controller. |
| 18 | 5A | |
| 19 | 15A | Fog lights |
| 20 | Not used | |
| 21 | Not used | |
| 22 | 15A | Front left door control unit;
Front right door control unit. |
| 23 | 15A | Rear left door control unit;
Rear right door control unit. |
| 24 | 20A | The electrician of the comfort system |
| 25 | 30A | Blower;
Air conditioning. |
| 26 | 30A | Heated rear window |
| 27 | 30A | Trailer detection control unit |
| 28 | 20A | Fuel pump |
| 29 | Not used | |
| 30 | 20A | Sliding roof controller |
| 31 | 15A | Reverse light switch;
Mass flow meter; Automatic gearbox control unit; Light sensor; Starter relay; Selector handle lock solenoid; Diagnostic connector; Automatic anti-glare rearview mirror. |
| 32 | Not used | |
| 33 | 15A | Lighter |
| 34 | 30A | 12V socket |
| 35 | 30A | Accessory socket |
| 36 | 30A | Power control unit;
Rear wiper motor. |
| 37 | 30A | Power controller;
Headlight washer pump. |
| 38 | 15A | Alarm horn;
Comfort system electrics; Interior monitoring |
| 39 | 20A | Radio sound amplifier |
| 40 | 25A | Horn |
| 41 | Additional heater control unit;
Remote control receiver. |
|
| 42 | 30A | ABS control unit |
| 43 | 15A | Mass air flow meter;
Engine management; EGR; Main relay; Engine control unit; Engine control unit relay. |
| 44 | 30A | Climate control unit |
Fuse and relay box №1.
The scheme of the fuse box
| Number | Amperes [A] | Description |
|---|---|---|
| A | Not used | |
| B | 40A | Additional heater |
| C | 60A | Additional heater |
| R1 | Special vehicles | |
| R2 | Low-power heating relay | |
| R3 | High-performance heating relay |
Fuse and relay box No. 2 in the passenger compartment
The scheme of the fuse box
| Number | Amperes [A] | Description |
|---|---|---|
| A | 10 A. | Rear roller blind |
| B1 | 10 A. | 12V socket |
| B2 | 10 A. | Rear roller blind |
| C | unused | |
| D | 30A | Window regulator |
| E1 | 30A | Driver seat adjustment |
| E2 | 10 A. | Driver seat adjustment |
| F. | 30A | Window regulator |
| G | 30A | Trailer towing module |
| R1 | Fuel pump relay;
Additional fuel pump relay. |
|
| R2 | Servotronic control unit | |
| R3 | Starter motor relay | |
| R4 | Starter motor relay;
Brake servo relay. |
|
| R5 | Heated rear window relay | |
| R6 | X contact relief relay | |
| R7 | Not used | |
| R8 | Horn relay | |
| R9 | Not used |
Fuse and relay box No. 3 in the passenger compartment
The scheme of the fuse box
| Number | Amperes [A] | Description |
|---|---|---|
| A | Not used | |
| B | 10 A. | Pest deterrent system |
| C. | Not used | |
| D | Not used | |
| E | 40A | Special vehicles |
| F1 | 10 A. | Special vehicles |
| F2 | 40A | Cooling fan (also 60A) |
| G | 30A | Cooling fan (40A and 60A also used) |
| H | 40A | ABS control unit |
| R1 | Not used | |
| R2 | Not used | |
| R3 | Special vehicles | |
| R4A | Special vehicles | |
| R4B | Taxi package |
Relay box in passenger compartment
The scheme of the relay box
| Number | Amperes [A] | Description |
|---|---|---|
| A | Not used | |
| B | Not used | |
| B1 | Not used | |
| B2 | Not used | |
| R1 | Alarm system;
Traffic lights; High beam headlamp relay. |
|
| R2 | Special vehicles;
Taxi package. |
|
| R3 | Alarm system control unit or siren relay |
|
| R4 | Alarm system control unit or siren relay |
|
| R5 | Alarm relay;
Right turn signal |
|
| R6 | Alarm Relay Left Turn Signal or Not Used |
Fuse box No. 2 in the passenger compartment
The scheme of the fuse box
| Number | Amperes [A] | Description |
|---|---|---|
| 1 | 10 A. | Special vehicles or Taxi package |
| 2 | 25A | Special vehicles or alarm system |
| 3 | 10 A. | Special vehicles or Taxi package |
| 4 | Special vehicles | |
| 5 | Special vehicles | |
| 6 | Special vehicles | |
| 7 | Special vehicles | |
| 8 | Special vehicles | |
| 9 | 5A | Special vehicles or radio |
| 10 | 10 A. | Special vehicles or 12V socket |
Fuse box in the engine compartment of the Audi A4 (B7)
The scheme of the fuse box
| Number | Amperes [A] | Description |
|---|---|---|
| A | 15A | Engine electronics |
| B1 | Not used | |
| B2 | 40A | Secondary air injection pump |
| C. | Not used | |
| D | 20A | Engine control unit |
| E. | 15A | Injectors |
| F. | Not used | |
| G. | 15A | Engine electronics |
| R1a | Not used | |
| R1b | Not used | |
| R2 | Main Relay | |
| R3 | Secondary air pump relay | |
| R4 | Not used |
This applies to motor models:
2004, 2005, 2006, 2007 and 2008 Audi A4 B7 Petrol (1.6, 1.8T, 2.0, 3.2) and Diesel (1.9 TDI, 2.5 TDI, 2.7 TDI and 3.0 TDI), S4, RS4.
