2012-2016 Audi A3 Fuse Box Diagram
The fuses are located under the steering wheel behind a cover and in the left side of the engine compartment.
| Do not repair fuses and never replace a blown fuse with one that has a higher amp rating. This can cause damage to the electrical system and a fire. |
Fuses in the interior
The fuses are behind the cover in the steering column area.
Some of the equipment listed in the following tables applies only to certain model versions or certain optional equipment.
| No. | Description |
|---|---|
| 1 | Engine components |
| 2 | Seat adjustment |
| 3 | Hydraulic pump cover (Cabriolet) |
| 4 | MMI control panel, MMI components |
| 5 | Gateway |
| 6 | Selector lever (automatic transmission) |
| 7 | Climate/heating control, auxiliary heating, rear window defogger relay |
| 8 | Diagnosis, electromechanical parking brake switch, light switch, rain and light sensor, interior lighting communication box (Plug-in hybrid drive*) anti-theft alarm system |
| 9 | Steering column switch module |
| 10 | Display |
| 11 | Reversible driver's side safety belt tensioners |
| 12 | MMI area |
| 13 | Adaptive dampers control module / service plug (Plug-in hybrid drive*) |
| 14 | Climate control system blower |
| 15 | Electronic steering column lock |
| 16 | MMI area |
| 17 | Instrument cluster |
| 18 | Rearview camera |
| 19 | Convince key system control module, tank system |
| 20 | Tank system |
| 21 | - |
| 22 | - |
| 23 | Exterior lighting, heated washer fluid nozzles |
| 24 | Panorama sunroof / power top control module, power top latch (Cabriolet) |
| 25 | Door/driver's side doors (for example power windows) |
| 26 | Seat heating |
| 27 | Sound-amplifier |
| 28 | Power top control module, electronics (Cabriolet) |
| 29 | Interior lights |
| 30 | - |
| 31 | Exterior lighting |
| 32 | Driver assistance systems |
| 33 | Airbag |
| 34 | Button illumination, coils for upper cabin heating relay (Cabriolet) and socket relay, interior sound, reversing light switch, temperature sensor |
| 35 | Function lighting, diagnosis, headlight range control system, air quality sensor, automatic dimming rearview mirror |
| 36 | Right cornering light / right LED-headlight |
| 37 | Left cornering light / left LED-headlight |
| 38 | High-voltage battery (Plug-in hybrid drive*) |
| 39 | Door/front passenger's side doors (for example, power windows) |
| 40 | Sockets |
| 41 | Reversible front passenger's side safety belt tensioners |
| 42 | Central locking components, windshield washer system |
| 43 | Fleadlights, lighting |
| 44 | All wheel drive |
| 45 | - |
| 46 | - |
| 47 | Rear window wiper |
| 48 | Outer noise amplifier (Plug-in hybrid drive*) |
| 49 | Starter, clutch sensor, headlight relay coil, high-voltage battery (Plug-in hybrid drive*) |
| 50 | - |
| 51 | - |
| 52 | - |
| 53 | Rear window defogger |
The power seats* are protected via circuit breakers that automatically switch on after a few seconds after the overload has been reduced.
Fuses in the engine compartment
| No. | Description |
|---|---|
| 1 | ESC control module |
| 2 | ESC control module |
| 3 | Engine control module (gasoline/diesel) |
| 4 | Engine cooling, engine components, auxiliary heater coil relay (1+2), secondary air injection pump relay |
| 5 | Engine components, tank system |
| 6 | Brake light sensor |
| 7 | Engine components, water pumps |
| 8 | Oxygen sensor |
| 9 | Engine components, exhaust door, glow time control module, SULEV valve |
| 10 | Fuel injectors, fuel control module |
| 11 | Auxiliary heater heating element 2 |
| 12 | Auxiliary heater heating element 3 |
| 13 | Automatic transmission control module |
| 14 | - |
| 15 | Horn |
| 16 | Ignition coil/power electronics (Plug-in hybrid drive*) |
| 17 | ESC control module, engine control module |
| 18 | Terminal 30 (reference voltage) |
| 19 | Windshield wipers |
| 20 | Horn |
| 21 | - |
| 22 | Terminal 50 diagnosis |
| 23 | Starter |
| 24 | Auxiliary heater heating element 1, brake booster (Plug-in hybrid drive*) |
| 25 | - |
| 26 | - |
| 27 | - |
| 28 | - |
| 29 | - |
| 30 | - |
| 31 | Vacuum pump/water pump (Plug-in hybrid drive*) |
| 32 | LED headlights |
| 33 | Brake booster memory (Plug-in hybrid drive*) |
| 34 | Brake booster control (Plug-in hybrid drive*) |
| 35 | Relay (Plug-in hybrid drive*) |
The power seats* are protected via circuit breakers that automatically switch on after a few seconds after the overload has been reduced.