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2011 Audi A3 8P Fuse Box Diagram

The 2011 Audi A3 (8P) has 3 fuse boxes. Choose the one you’re looking at.

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Instrument panel fuse box (driver's side)

Forty-nine positions in four groups: MINI fuses in the rows 1 to 6, 7 to 11 and 12 to 21 at the top, ATO fuses in the rows 22 to 31, 32 to 39 and 40 to 45 below them, and a last short MINI row, 46 to 49, along the bottom. Rows are read from the left.

The holder sits behind the cover at the driver's end of the facia; with the door open the cover levers out of its recess and pulls away, carrying the layout sticker, two spare fuses and the fuse pliers. Audi's plate for it is B8P-0238, printed unchanged in the model-year 2011 manual, whose tables repeat the 2010 ones position for position. Six sockets are unused — 7, 8, 21, 29, 30 and 35 — and neither the windows nor the seat motors appear anywhere in the list, being protected instead by self-resetting circuit breakers.

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No.FunctionAmpDescription
110 AMINIDiagnostic socket, light switch illumination, headlight range control and AFS (adaptive headlights) control unit, engine components (air mass meter, crankcase breather heater)
210 AMINIEngine control unit, fuel tank control unit and fuel pump relay, ABS/ESP control unit, brake light switch, electromechanical power steering, gateway, automatic transmission (DSG) and selector lever
35 AMINIAirbag control unit; front passenger airbag deactivation lamp
45 AMINIAir conditioning control unit and sensors, ESP/ASR button, tyre pressure display, oil level sensor, reversing light switch, seat heating, parking aid, seat occupancy sensor, garage door opener, dimming mirror, headlight assistant, washer jet heaters
55 AMINILeft headlight power output module (AFS / xenon headlights)
65 AMINIRight headlight power output module (AFS / xenon headlights)
7Not used
8Not used
915 AMININavigation system and radio (head unit)
107.5 AMINIDigital radio, telephone (cell phone) preparation, TV tuner
1110 AMINIAuto-dimming interior mirror, headlight assistant (high-beam assist)
1210 AMINICentral locking, front doors (driver's and front passenger's door control units)
1310 AMINICentral locking, rear doors (rear door control units); convenience system central control unit
1410 AMINIESP / ABS control unit, automatic transmission shift gate (selector lever sensors control unit)
1510 AMINIInterior lights and reading lights
1610 AMINIDiagnostic connector, rain and light sensor, air conditioning / heater control unit, tyre pressure monitor display control unit, auxiliary heater remote control receiver
175 AMINIAnti-theft alarm: alarm horn, interior monitoring sensor and vehicle inclination sender
185 AMINIStarter diagnosis line (engine control unit diagnosis wire on the 2.0 TFSI, engine code CBFA)
1910 AMINIAll-wheel drive (quattro / Haldex coupling) control unit
205 AMINIAudi magnetic ride (electronically controlled damping) control unit; option, listed by the workshop list and the model-year 2009 manual, not by the 2010/2011 manual
21Not used
2240 AATOFresh air blower (heater / air conditioning blower control unit)
2330 AATODriver's front power window motor
2420 AATOFront 12 V power outlet / cigarette lighter
2530 AATOHeated rear window (rear window defogger)
2620 AATO12 V power outlet in the luggage compartment
2715 AATOFuel tank control module (fuel pump control unit), fuel pump relay and supplementary fuel pump (diesel)
2830 AATORear power window motors, left and right
29Not used
30Not used
3120 AATOBrake servo vacuum pump (1.6 petrol engines; not on cars covered by the US manual)
3230 AATOHeadlight washer system pump (option; the US manual lists it to model year 2009)
3320 AATOSliding / tilting sunroof control unit
3420 AATOHeated rear seats control units (option, not on US cars)
35Not used
3610 AATOFront seat lumbar support adjustment switches
3720 AATOHeated front seats control units; Climatronic control unit
3830 AATOFront passenger's power window motor
395 AATOSpecial function interface (vehicle location system interface control unit)
4040 AATOStarter (starter relay supply)
4115 AATORear window wiper motor
4215 AATOWindscreen and rear window washer pump (the US manual lists it to model year 2009)
4320 AATOBody control module (convenience system central control unit)
4420 AATOTrailer detector control unit (trailer hitch option, not on US cars)
4515 AATOTrailer detector control unit (trailer hitch option, not on US cars; 15 A or 20 A)
4610 AMINITrailer socket supply (trailer hitch option, not on US cars)
475 AMINITelephone / cell phone package: 18-pin VDA interface connector
4810 AMINIDriving school vehicle: additional 12 V socket (special vehicles only)
495 AMINISpecial vehicles only: driving school buzzer, gong and footwell lights; police / emergency vehicle fuse 6

Engine compartment fuse box (30-fuse version)

Thirty positions in the electronics box on the left-hand side of the engine bay, next to the battery; press both catches the way their arrows point and the cover lifts off upwards.

Model year 2011 is the first for which Audi printed this box's own plate, B8P-1315, and the only fuse holder the US manual illustrates that year: the 3.2 V6 had left the range after 2009 and no 2011 US car took the 54-fuse variant. The assignment is otherwise the 2010 one. Reading the plate in rows from the left — F1 and F2 in the top left corner, F3 to F8, the pair of large fuses F25 and F26, the sideways F9 and F10, then F11 to F15; F16 and F17, F18 to F20 and F21 to F24 in the second band; F27 to F30 along the bottom with relay housing A1 among them and A2 in the corner. Positions 25 to 30 are MAXI blades, everything else ATO. Where a rating depends on the engine, the lowest is stored and the alternatives are named in the description.

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No.FunctionAmpDescription
140 AATOTerminal 30 supply to instrument panel fuses 7-11 (voltage stabiliser on cars with start/stop)
220 AATOEngine components: fuel pressure regulating valve 2 (2.0 TFSI CBFA); 30 A DSG mechatronics on cars with the 7-speed dual-clutch gearbox (0AM)
35 AATOBattery voltage: onboard supply control unit and battery monitoring control unit
420 AATOESP / ABS valves (ABS control unit; 20 A or 30 A by system)
515 AATOTransmission control module (DSG / S tronic mechatronics)
65 AATOSteering wheel / steering column electronics control unit
7Not used
8Not used
9Not used
105 AATOEngine control unit main relay: terminal 30 supply relay (diesel, 5 A) or Motronic power supply relay (petrol, 10 A)
1120 AATOAuxiliary heater control unit (diesel with auxiliary heater; not on US cars; 30 A from November 2010)
125 AATOData bus diagnostic interface (gateway)
1315 AATOEngine control unit (15, 25 or 30 A by engine)
1420 AATOIgnition coils with output stages (petrol); engine components (diesel)
155 AATOFuel tank leak diagnosis, oxygen (lambda) sensor heaters, glow plug (preheating) control unit / engine components (5 A or 10 A; 15 A on some engines)
1630 AATOBody control module (onboard supply control unit): right-hand parking, dipped and main beam, fog light and indicator
1715 AATOHorns (high- and low-tone)
1830 AATOAudio amplifier (sound system with subwoofer in the luggage compartment)
1930 AATOWindscreen wiper motor control unit
2010 AATOCoolant circulation (water) pump or fuel pressure regulating (volume control) valve, by engine (10 A or 20 A)
2110 AATOOxygen (lambda) sensor heaters or brake servo vacuum pump, by engine (10 A or 15 A)
225 AATOClutch pedal position sensor, brake light switch and brake pedal switch
235 AATOEngine relay and components: coolant after-run pump relay, secondary air pump relay, EGR / boost pressure valves, fuel pressure regulating valve, by engine (5, 10 or 15 A)
2410 AATOEngine components: radiator fan control unit, auxiliary coolant (water) pump relay, engine electronics supply relay
2540 AMAXIESP / ABS hydraulic pump and ABS valves (ABS control unit)
2630 AMAXIBody control module (onboard supply control unit): left-hand parking, dipped and main beam, fog light and indicator
2740 AMAXISecondary air pump motor (petrol) or glow plug (preheating) control unit (diesel; 50 A in the workshop list)
28Not used
2950 AMAXISupply to the instrument panel fuse box (fuses 32-37, 39, 44, 45 and 48; special equipment)
3050 AMAXIPower supply relay terminal 15 (relay 2; supplies instrument panel fuses 1-6, 19, 20, 29-31, 40-42, 46, 47 and 49)

Engine compartment fuse box (54-fuse version)

Fifty-four positions, arranged in three bands and read left to right: F1 to F5, the large F47 and F48, F6 to F8, relay R4 and F9 to F14 across the top; F15, the vertical stack F16 to F18, F19 to F21 and the block F22 to F26 over F33 to F37 at the right, then F27 to F29, relay R2, the stack F30 to F32 and the large F49 to F51; F38 to F40, relay R1, the large F52 to F54, F41 to F43, relay R3 and F44 to F46 along the bottom. The MAXI blades are 47 to 54; the others are ATO.

The holder is the E-box high, in the same place as the smaller box — the electronics box by the battery on the left of the engine compartment, under the same cover — and it belongs to the five- and six-cylinder cars: the 3.2 V6, the S3 and, from this year, the RS3. The 2011 US manual no longer prints its table, because the V6 had gone from that market; the assignment here is the one the 2010 edition printed and the VW/Audi workshop fuse list carries on to the end of production.

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No.FunctionAmpDescription
130 AATOBody control module (onboard supply control unit): right-hand parking, dipped and main beam, fog light and indicator
220 AATOESP / ABS valves (ABS control unit; 20 A or 30 A by system)
340 AATOTerminal 30 supply to instrument panel fuses 7-11 (voltage stabiliser on cars with start/stop)
45 AATOBattery voltage: onboard supply control unit
515 AATOHorns (high- and low-tone)
615 AATOFuel pressure regulating valve (2.0 TFSI including the S3; workshop list and Autodata, not in the US manual)
715 AATOFuel pump and injectors (3.2 V6); 30 A fuel pump control unit on the RS3 (workshop list only)
8Not used
910 AATOEngine components: boost pressure control, charcoal canister and charge air recirculation valves (15 A on the RS3)
1010 AATOFuel tank leak diagnosis pump (2.0 TFSI), air mass meter (3.2 V6)
1110 AATOOxygen (lambda) sensor heaters before the catalytic converter
1210 AATOOxygen (lambda) sensor heaters after the catalytic converter
1315 AATOAutomatic transmission: DSG / S tronic mechatronics
14Not used
1510 AATOCoolant after-run (water) pump; coolant circuit valve on the RS3
1620 AATOVolume control valve (fuel pressure regulating valve); US manual only, the workshop list leaves this position free
175 AATOSteering wheel / steering column electronics control unit
1830 AATOAudio amplifier (sound system with subwoofer)
19Not used
20Not used
21Not used
22Not used
2310 AATOEngine control unit and Motronic power supply relay (5 A on the RS3)
245 AATOData bus diagnostic interface (gateway)
25Not used
26Not used
275 AATOExhaust flap valve (S3); 15 A oxygen (lambda) sensor heater on the RS3 (not in the US manual)
2815 AATOEngine control unit (15 A or 25 A by engine)
295 AATOEngine components: coolant after-run and secondary air pump relays (15 A engine valves and sensors on the RS3)
3020 AATOAuxiliary heater control unit (not on US cars; 30 A from November 2010)
3130 AATOWindscreen wiper motor control unit
32Not used
33Not used
34Not used
35Not used
36Not used
37Not used
3810 AATOEngine components: radiator fan control unit, camshaft timing and secondary air valves, fuel tank leak diagnosis
395 AATOClutch pedal position sensor, brake light switch and brake pedal switch
4020 AATOIgnition coils with output stages (four-cylinder engines); 15 A engine control unit on the RS3
41Not used
425 AATOEngine component supply relay (2.0 TFSI, S3, RS3; not in the 2010 US manual)
4330 AATOIgnition coils with output stages (3.2 V6 and RS3; the US manual lists it to model year 2009)
44Not used
45Not used
46Not used
4730 AMAXIBody control module (onboard supply control unit): left-hand parking, dipped and main beam, fog light and indicator
4840 AMAXIESP / ABS hydraulic pump and ABS valves (ABS control unit)
49Not used
50Not used
5140 AMAXISecondary air pump motor (3.2 V6; the US manual lists it to model year 2009)
5250 AMAXIPower supply relay terminal 15 (relay 2; supplies instrument panel fuses 1-6, 19, 20, 29-31, 40-42, 46, 47 and 49)
5350 AMAXISupply to the instrument panel fuse box (fuses 32-37, 39, 44, 45 and 48; special equipment)
54Not used