Audi Q3 2021 Fuse Box Info
Passenger compartment fuse box location:
The instrument panel fuse box is located below the steering wheel, behind the cover (left-hand drive vehicle).
The instrument panel fuse box is located in the glow compartment, behind the cover (right-hand drive vehicle).
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Functions |
| 1 | Exhaust treatment |
| 2 | Seat electronics, front seats |
| 4 | Infotainment system, volume control |
| 5 | Diagnostic interface |
| 6 | Ignition key safety interlock, selector lever (automatic transmission) |
| 7 | Auxiliary heating, climate control system control panel, tire pressure monitoring system |
| 8 | Headlight range control, interior monitoring, ambient lighting, light switch, roof electronics control module, emergency call module, parking brake, diagnostic connector, light/rain sensor, particulate matter sensor |
| 9 | Steering column electronics |
| 10 | Infotainment system, volume control |
| 11 | Vehicle electrical system control module |
| 12 | Infotainment system |
| 13 | Driver's side safety belt tensioner, airbag control module |
| 14 | Climate control system blower |
| 15 | Electronic steering column lock |
| 16 | Audi phone box |
| 17 | Instrument cluster, emergency call module |
| 18 | Rearview camera, peripheral cameras |
| 19 | Convenience access and start authorization control module |
| 20 | Exhaust treatment, diagnosis |
| 21 | Steering column electronics |
| 24 | Vehicle electrical system control module |
| 25 | Driver side door control module, left rear window regulator motor, left rear door control module |
| 26 | Vehicle electrical system control module |
| 27 | Vehicle electrical system control module |
| 29 | Roof electronics control module, vehicle electrical system control module |
| 30 | Auxiliary battery control module |
| 32 | Driver assistance systems, camera systems |
| 33 | Front passenger’s seat electronics, roof electronics control module |
| 34 | A/C system components, parking brake, reverse lights, interior sound generator |
| 35 | A/C system components, diagnostic connector, center console switch module, rearview mirror, headlight range control, instrument ilumination |
| 39 | Passenger side door control module, right rear window regulator motor, right rear door control module |
| 40 | Sockets |
| 41 | Passenger's side safety belt tensioner |
| 42 | Vehicle electrical system control module |
| 44 | All wheel drive control module |
| 45 | Driver's seat electronics |
| 47 | Rear window wiper |
| 48 | Exterior sound generator |
| 49 | Engine start, clutch position sensor |
| 52 | Suspension control |
| 53 | Rear window defogger |
| 54 | Left trailer hitch light |
| 55 | Trailer detection control module |
| 56 | Right trailer hitch light |
| 57 | Trailer hitch socket |
Engine compartment fuse box:
| Fuse/Relay N° | Functions |
| 3 | Engine control module |
| 4 | Engine components, engine start |
| 5 | Engine components |
| 6 | Brake light switch |
| 7 | Engine components |
| 8 | Heated oxygen sensors |
| 9 | Engine components |
| 10 | Fuel pump |
| 13 | Transmission fluid pump, automatic transmission |
| 15 | Horn |
| 16 | Engine components, engine electronics |
| 17 | Electronic Stabilization Control (ESC), engine control module |
| 18 | Battery monitoring control module, diagnostic interface |
| 19 | Windshield wiper control module |
| 20 | Anti-theft alarm system, garage door opener |
| 21 | Automatic transmission |
| 22 | Engine control module |
| 23 | Engine start |
| 31 | Engine components, fuel injectors |
| 33 | Transmission fluid pump |
| 35 | Climate control system |
| 36 | Left headlight |
| 37 | Parking heater |
| 38 | Right headlight |
