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Audi A3 (2012 - 2016) Fuse Box Diagram

avatar Jonathan Yarden Jan 31, 2021 · 5 min. read

In this article you will find a description of fuses and relays Audi, with photos of block diagrams and their locations. Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.

Year of production: 2012, 2013, 2014, 2015, 2016

Fuses in the interior

The fuses are behind the cover in the steering column area.

Audi A3 - fuse box diagram - interior

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
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
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
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*)
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

Audi A3 - fuse box diagram - engine compartment

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
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
22 Terminal 50 diagnosis
23 Starter
24 Auxiliary heater heating element 1, brake booster (Plug-in hybrid drive*)
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.

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

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