Audi A4 (2018) – fuse box diagram
Year of production: 2018
Fuse assignment – driver / front passenger legroom
Front passenger legroom (vehicle with steering wheel on right side)
Fuse panel A (brown)
Number | Electrical equipment |
1 | – |
2) | Mass air flow sensor, camshaft adjustment, charge air cooler pump |
3) | Exhaust door, fuel injectors, radiator inlet |
4 | Vacuum pump, hot water pump, particulate sensor, biodiesel sensor |
5 | Brake light sensor |
6 | Engine valves, camshaft adjustment |
7 | Heated oxygen sensor, mass air flow sensor |
8 | Water pump, high pressure pump, high pressure regulator valve |
9 | Hot water pump |
10 | Oil pressure sensor, oil temperature sensor |
11 | Clutch pedal position sensor |
12 | Engine valves |
13 | Radiator fan |
14 | Fuel injectors |
15 | Ignition coils |
16 | Fuel pump |
Fuse panel B (red)
Number | Electrical equipment |
1 | Anti-theft alarm system |
2) | Engine control module |
3) | Lumbar support |
4 | Automatic transmission selection mechanism |
5 | Horn |
6 | Electromechanical parking brake |
7 | Gate control module |
8 | Interior headlights |
9 | – |
10 | Airbag control module |
11 | Electronic stability control (ESC) |
12 | Diagnostic connector, light / rain sensor |
13 | Climate control system |
14 | Right front door control module |
15 | Air conditioning compressor |
Fuse panel C (black)
Number | Electrical equipment |
1 | Front seat heater |
2) | Wipers |
3) | Left headlight electronics |
4 | Panoramic glass roof / sliding / t ilting roof |
5 | Left front door control module |
6 | Sockets |
7 | Right rear door control module |
8 | All-wheel drive |
9 | Right headlight electronics |
10 | Windshield washer/headlight washer system |
11 | Left rear door control module |
Fuse panel D (black)
Number | Electrical equipment |
1 | Seat ventilation, rear view mirror, rear air conditioning controls |
2) | Gate, climate control system |
3) | Sound activator / exhaust sound tuning |
4 | Clutch pedal position sensor |
5 | Engine start |
6 | – |
7 | Rear USB charging port |
8 | Homelink |
9 | Adaptive cruise control |
10 | – |
11 | Video camera |
12 | Matrix LED headlight / right LED headlight |
13 | Matrix LED headlight / left LED headlight |
14 | Rear windshield wiper |
Fuse panel E (red)
Number | Electrical equipment |
1 | Ignition coils |
2) | Natural gas tank valves |
3) | – |
4 | – |
5 | Motor mount |
6 | Automatic transmission |
7 | Instrument panel |
8 | Air conditioning system (blower) |
9 | – |
10 | Dynamic control |
11 | Engine start |
Assignment of fuses in the cockpit on the driver’s side
Number | Electrical equipment |
1 | – |
2) | Phone |
3) | – |
4 | Head-up display |
5 | Audi music interface, USB charging port |
6 | Front air conditioning controls |
7 | Steering column lock |
8 | Display of the audio-navigation system |
9 | Instrument cluster |
10 | Infotainment unit |
11 | Light switch |
12 | Steering column electronics |
13 | – |
14 | Audio-navigation system |
15 | – |
16 | Steering wheel heating |
Left luggage compartment fuse assignment
Fuse panel A (black)
Number | Electrical equipment |
1 | – |
2) | Windshield defroster |
3) | Windshield defroster |
4 | – |
5 | Suspension check |
6 | Automatic transmission |
7 | Rear window defogger |
8 | Rear seat heater |
9 | Rear lights |
10 | Left seat belt pretensioner |
11 | Central locking system |
12 | Electric trunk lid |
Fuse panel B (red)
Number | Electrical equipment |
Not assigned |
Fuse panel C (brown)
Number | Electrical equipment |
1 | – |
2) | Phone |
3) | Lumbar support |
4 | Audi side assist |
5 | – |
6 | – |
7 | – |
8 | Smart module (tank) |
9 | – |
10 | – |
11 | 12 V battery. |
12 | Homelink |
13 | Rear camera, peripheral cameras |
14 | Right rear lights |
15 | – |
16 | Right seat belt pretensioner |
Fuse panel E (red)
Number | Electrical equipment |
1 | – |
2) | Sound amplifier |
3) | AdBlue heating |
4 | – |
5 | Trailer hitch (right light) |
6 | – |
7 | Towing hook |
8 | Trailer hitch (left light) |
9 | Trailer hitch (socket) |
10 | Sport differential |
11 | Ad Blue |