For the Audi A4 B7 (8E, 8H) 2004, 2005, 2006, 2007, 2008, 2009 model year.
| Cigarette lighter fuse – (fuse box in passenger compartment, fuse №33/15A) |
Fuse box in passenger compartment.
fuse box location.
fuse box diagram.
legend.
| Fuse | Amps | Circuits protected |
|---|---|---|
| 1 | 10A | Air-conditioning control unit Climatronic |
| 2 | 5A | Footwell light(s) |
| 3 | 5A | Heated washer jets |
| 4 | 5A | Cooling fan control unit |
| 5 | 10A | Rear roller blind Multifunction switch Oil level sensor Oil temperature sensor Navigation system Parking assistance control unit |
| 6 | 5A | Air quality sensor Climatronic Heated front seat(s) Air-conditioning high-pressure sensor TCS/ESP button |
| 7 | 10A | Traction control switch Clutch switch ABS control unit Brake pedal switch |
| 8 | 5A | Telephone Telephone amplifier |
| 9 | 15A | Brake servo relay |
| 10 | 5A | Headlight range control |
| 11 | 5A | Airbag control unit Airbag warning light |
| 12 | 10A | Diagnostic connector |
| 13 | 10A | Control unit, steering column electronics |
| 14 | 10A | Brake light switch |
| 15 | 10A | Control unit with display in the dash panel insert Navigation system CD player |
| 16 | 5A | Garage door opener |
| 17 | 10A | Rain sensor Daylight running system Parking assistance control unit |
| 18 | 5A | |
| 19 | 15A | Fog light(s) |
| 20 | Not used | |
| 21 | Not used | |
| 22 | 15A | Door control unit, front left Door control unit, front right |
| 23 | 15A | Door control unit, rear left Door control unit, rear right |
| 24 | 20A | Comfort system electrics |
| 25 | 30A | Blower Air conditioning |
| 26 | 30A | Heated rear windscreen |
| 27 | 30A | Trailer detection control unit |
| 28 | 20A | Fuel pump |
| 29 | Not used | |
| 30 | 20A | Sliding roof control unit |
| 31 | 15A | Reversing light switch Mass airflow meter Automatic transmission control unit Light sensor Starter relay Selector handle lock solenoid Diagnostic connector Automatic anti-dazzle rear-view mirror |
| 32 | Not used | |
| 33 | 15A | Cigarette lighter |
| 34 | 30A | 12V socket |
| 35 | 30A | Accessory socket |
| 36 | 30A | Power supply control unit Rear wiper motor |
| 37 | 30A | Power supply control unit Headlight washer pump |
| 38 | 15A | Alarm horn Comfort system electrics Interior monitoring |
| 39 | 20A | Radio Audio amplifier |
| 40 | 25A | Horn |
| 41 | Additional heater control unit Remote control receiver | |
| 42 | 30A | ABS control unit |
| 43 | 15A | Mass airflow meter Engine management EGR Main relay Engine control unit Engine control unit relay |
| 44 | 30A | Climate control unit |
Fuse and relay box №1.
fuse box diagram.
legend.
| Fuse | Amps | Circuits protected |
|---|---|---|
| A | Not used | |
| B | 40A | Additional heater |
| C | 60A | Additional heater |
| R1 | Special vehicles | |
| R2 | Low-output heating relay | |
| R3 | High-output heating relay |
Fuse and relay box №2 in passenger compartment.
fuse box diagram.
legend.
| Fuse | Amps | Circuits protected |
|---|---|---|
| A | 10A | Rear roller blind |
| B1 | 10A | 12V socket |
| B2 | 10A | Rear roller blind |
| C | not used | |
| D | 30A | Window regulator |
| E1 | 30A | Driver's seat adjustment |
| E2 | 10A | Driver's seat adjustment |
| F | 30A | Window regulator |
| G | 30A | Trailer towing module |
| R1 | Fuel pump relay Additional relay, fuel pump | |
| R2 | Servotronic control unit | |
| R3 | Starter motor relay | |
| R4 | Starter motor relay Brake servo relay | |
| R5 | Heated rear windscreen relay | |
| R6 | X contact relief relay | |
| R7 | Not used | |
| R8 | Horn relay | |
| R9 | Not used |
Fuse and relay box №3 in passenger compartment.
fuse box diagram.
legend.
| Fuse | Amps | Circuits protected |
|---|---|---|
| A | Not used | |
| B | 10A | Vermin repellent system |
| C | Not used | |
| D | Not used | |
| E | 40A | Special vehicles |
| F1 | 10A | Special vehicles |
| F2 | 40A | Cooling fan (60A also used) |
| 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.
relay box diagram.
legend.
| Fuse | Amps | Circuits protected |
|---|---|---|
| A | Not used | |
| B | Not used | |
| B1 | Not used | |
| B2 | Not used | |
| R1 | Alarm system Main beam Or Main beam relay | |
| R2 | Special vehicles Or Taxi package | |
| R3 | Alarm system control unit Or Siren relay | |
| R4 | Alarm system control unit Or Siren relay | |
| R5 | Alarm relay Right direction indicator Or Flasher relay | |
| R6 | Alarm relay Left direction indicator Or Not used |
Fuse box №2 in passenger compartment.
fuse box diagram.
legend.
| Fuse | Amps | Circuits protected |
|---|---|---|
| 1 | 10A | Special vehicles Or Taxi package |
| 2 | 25A | Special vehicles Or Alarm system |
| 3 | 10A | 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 | 10A | Special vehicles Or 12V socket |
Fuse box in engine compartment Audi A4 (B7).
fuse box location.
fuse box diagram.
legend.
| Fuse | Amps | Circuits protected |
|---|---|---|
| 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 |