Audi A5 and S5 (2021-2022) – fuse and relay box
Diagrams of fuse and relay boxes – Audi A5 and S5
Applies to vehicles manufactured in the years:
2021, 2022.
Driver / front passenger footwell
The fuses are located in the footwell under the footrest (left-hand drive vehicle) or behind the hood (right-hand drive vehicle).
Left-hand drive vehicles
Right-hand drive vehicles
| Number | Description |
|---|---|
| Fuse panel A (brown) | |
| 1 | Catalyst heating |
| 2 | Engine components |
| 3 | Exhaust doors;
Fuel injectors; An air inlet; Engine heating. |
| 4 | Vacuum pump;
Hot water pump; NOx sensor; Particulate sensor; Biodiesel sensor; Exhaust doors. |
| 5 | Brake light sensor |
| 6 | Engine valves;
Camshaft adjustment. |
| 7 | Heated oxygen sensors;
Mass air flow sensor; The water pump. |
| 8 | Water pump;
High pressure pump; High pressure regulator valve; Temperature valve; Engine mount. |
| 9 | Hot water pump;
Engine relay; 48V starting generator; 48V water pump. |
| 10 | Oil pressure sensor;
Oil temperature sensor. |
| 11 | Clutch position sensor;
48 V starter; The water pump; Starter 12 V. |
| 12 | Engine valves;
Engine mount. |
| 13 | engine cooling |
| 14 | Fuel injectors;
Powertrain control module. |
| 15 | Ignition coils;
Heated lambda sensors. |
| 16 | Fuel pump |
| Fuse panel B (red) | |
| 1 | Anti-theft alarm system |
| 2 | Powertrain control module |
| 3 | Left front seat electronics;
Lumbar support; Massage chair. |
| 4 | Gear selector, automatic transmission |
| 5 | Horn |
| 6 | Parking brake |
| 7 | Diagnostic interface |
| 8 | Roof electronics control module |
| 9 | Emergency call and communication control module |
| 10 | Airbag control module |
| 11 | Electronic Stability Control (ESC);
Anti-lock Braking System (ABS). |
| 12 | Diagnostic connection;
Light / rain sensor. |
| 13 | Air conditioning system |
| 14 | Right front door control module |
| 15 | Air conditioning system compressor |
| 16 | Brake system pressure reservoir;
Warming the left neck. |
| Fuse panel C (black) | |
| 1 | Front seat heating |
| 2 | Wipers |
| 3 | Left headlight electronics |
| 4 | Panoramic glass sunroof |
| 5 | Left front door control module |
| 6 | 12 V socket |
| 7 | Right Rear Door Control Module;
Right rear power window. |
| 8 | All-wheel drive control module |
| 9 | Right headlight electronics |
| 10 | Windshield washer system / headlamp washer system control module |
| 11 | Left Rear Door Control Module;
Left rear power window. |
| 12 | Auxiliary heating |
| Fuse panel D (black) | |
| 1 | Front seat electronics;
Seat ventilation; Rearview mirror; Air conditioning control panel at the rear; Neck heating; Front passenger airbag warning lamp; Diagnostic connector. |
| 2 | Diagnostic interface;
Vehicle electrical system control module. |
| 3 | Sound generator |
| 4 | Clutch position sensor |
| 5 | Engine start; Emergency shutdown. |
| 6 | Diagnostic connection;
Traffic Information (TMC) antenna. |
| 7 | USB connection |
| 8 | Garage door opener |
| 9 | Adaptive cruise control by Audi;
Adaptive distance adjustment. |
| 11 | Front camera |
| 12 | Right headlight |
| 13 | Left headlight |
| 14 | Transmission fluid cooling |
| Fuse panel E (red) | |
| 1 | Ignition coils |
| 2 | Air conditioning system compressor |
| 5 | Left headlight |
| 6 | Automatic gearbox |
| 7 | Instrument panel |
| 8 | Air conditioning blower |
| 9 | Right headlight |
| 10 | Dynamic steering |
| 11 | Engine start |
Instrument panel
Additional fuses are located at the front of the cockpit (driver’s side).
| Number | Description |
|---|---|
| 1 | Convenient access and commissioning of the authorization control module |
| 2 | Phonebox Audi ;
USB connection. |
| 4 | Head-up display |
| 5 | Audi music interface ;
USB connection. |
| 6 | Front air conditioning system control panel |
| 7 | Steering column lock |
| 8 | Central display |
| 9 | Instrument cluster |
| 10 | Volume control |
| 11 | Light switch, switch module |
| 12 | Steering column electronics |
| 14 | Information and entertainment system |
| 16 | Steering column electronics;
Steering wheel heating. |
Trunk
The fuses are located under the left cover in the trunk.
| Number | Description |
|---|---|
| Fuse panel A (black) | |
| 2 | Windshield defroster |
| 3 | Windshield defroster |
| 5 | Suspension control |
| 6 | Automatic gearbox |
| 7 | Rear window defogger |
| 8 | Rear seat heating |
| 9 | Left rear lights |
| 10 | Airbag;
Driver’s seat belt pretensioner control module. |
| 11 | Trunk lid lock;
Fuel filler door lock; Comfort system control module. |
| 12 | Trunk lid |
| Fuse panel B (red) | |
| 6 | Electric compressor |
| Fuse panel C (brown) | |
| 1 | External antenna |
| 2 | Phonebox Audi ;
Seat belt microphone. |
| 3 | Right front seat electronics;
Lumbar support; Massage chair. |
| 4 | Belt assistant |
| 6 | Interior monitoring;
Anti-theft alarm system; Tire pressure monitoring system. |
| 7 | Convenient access and commissioning of the authorization control module |
| 8 | Parking heating;
Tank module. |
| 9 | Top power control module |
| 10 | TV tuner;
Data exchange; Telematics control module. |
| 11 | Auxiliary battery control module |
| 12 | Garage door opener |
| 13 | Reversing camera, peripheral cameras |
| 14 | Right rear lights |
| 16 | 2021: Airbag control module;
2022: Airbag, front passenger seat belt pretensioner control module. |
| Fuse panel E (red) | |
| 1 | Warming the right neck |
| 3 | Exhaust gas treatment |
| 4 | Top power control module |
| 5 | Right trailer hitch lamp |
| 7 | Towbar |
| 8 | Left trailer hitch lamp |
| 9 | Trailer hitch socket |
| 10 | All-wheel drive control module;
Sports differential. |
| 11 | Exhaust gas treatment |
