The third-generation (Mk3) Audi A3 and S3 (chassis code 8V) , Audi’s compact luxury car and its high-performance variant, was produced from 2012 to 2020 . Combining sleek design, cutting-edge technology, and exceptional performance, this generation of the A3 and S3 stands as a benchmark in the premium compact car segment.
In this article, you will find detailed fuse box diagrams for Audi A3 and S3 models produced in 2012, 2013, 2015, 2016, 2017, 2018, 2019, and 2020 . These diagrams offer valuable information on the fuse layout and relay assignments, making it easy to maintain and troubleshoot the vehicle’s electrical systems.
What’s Included:
Fuse Box Diagrams : Easy-to-read diagrams for accurate identification of fuses.Fuse Panel Locations : Clear instructions on locating the fuse panels within the car.Fuse Assignments : Detailed descriptions of each fuse and relay, allowing for precise troubleshooting and maintenance.
This guide is a must-have resource for Audi A3 and S3 (8V) owners and technicians, providing the knowledge needed to address electrical issues, replace fuses, or perform routine maintenance. Whether you’re a DIY enthusiast or a professional, this comprehensive guide simplifies the process of keeping your vehicle in peak condition.
Stay in control of your Audi A3/S3 (8V) with this thorough fuse box diagram guide!
The cigar lighter / power outlet fuse in the Audi A3/S3 is fuse №F40 located in the Instrument Panel .
Left-hand drive vehicles: located behind a cover near the steering column.Right-hand drive vehicles: located behind a cover in the glove box.
It is located in the engine compartment (left-side)
Assignment of the fuses in the Instrument panel (2012-2013)
No. Electrical equipment amps F2 Seat adjuster 10 F3 Hydraulic pump for soft top (Cabriolet) 40 F4 MMI control console, MMI components 7.5 F5 Gateway 5 F6 Anti-theft alarm system 5 F7 Air conditioner/heater console, selector lever (automatic gearbox), auxiliary heating, relay coil for rear window heating 10 F8 Diagnostics, switch for electronic parking brake, light switch, rain/light sensor, interior lighting 10 F9 Steering column switch module 1 F10 Display 5 F11 Reversible belt tensioners (driver’s side) 25 F12 MMI system 15/20 F13 Control unit for suspension control 20 F14 Air conditioner blower 30 F15 Electric steering column lock 10 F16 MMI system 7.5 F17 Instrument cluster 5 F18 Reversing camera 7.5 F19 Control unit for convenience key system 7.5 F23 Exterior lighting (right side) 40 F24 Panorama roof/control unit for soft top, soft top lock (Cabriolet) 20/30 F25 Door/s, driver’s side (e.g. electric windows) 30 F26 Seat heating 30 F27 Sound amplifier 30 F28 Control unit for soft top, electronics (Cabriolet) 5 F29 Interior lights 7.5 F31 Exterior lighting (left side) 40 F32 Driver assistance systems 7.5 F33 Airbag 5 F34 LEDs for buttons/switches, coil for neck heating relay (Cabriolet) and electrical socket relay, interior sound, reversing light switch, temperature sensor, oil level sensor 7.5 F35 Diagnostics, headlight range control, air quality sensor, automatic anti-dazzle mirrors 10 F36 Cornering light (right side) / LED headlight (right side) 15 F37 Cornering light (left side) / LED headlight (left side) 15 F39 Door/s, passenger’s side (e.g. electric windows) 30 F40 Cigarette lighter, electrical sockets 20 F41 Reversible belt tensioners (front passenger’s side) 25 F42 Central locking system 40 F43 Windscreen washer system 30 F44 Four-wheel drive 15 F45 Electrically adjustable seat (driver’s side) 15 F47 Rear window wiper 15 F49 Starter, clutch sensor 5 F53 Rear window heating 30
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Assignment of the fuses in the Engine compartment (2012-2013)
No. Electrical equipment amps F1 ESC control unit 40 F2 ESC control unit 40 F3 Engine control unit (petrol/ diesel) 15/30 F4 Engine cooling, engine components, supplementary heater relay coils (1+2), secondary air pump relay 5/10 F5 Engine components, tank system 7.5/10 F6 Brake light sensor 5 F7 Engine components, coolant pumps 7.5/10/15 F8 Lambda probe 10/15 F9 Engine components, exhaust flap, control unit for automatic glow period 5/10/20 F10 Fuel injectors, fuel control unit 15/20 F11 Supplementary heater, heating rod 2 40 F12 Supplementary heater, heating rod 3 40 F13 Automatic gearbox control unit 15/30 F15 Horn 15 F16 Ignition coil/CNC shut-off valve (natural gas engine) 20/7.5 F17 ESC control unit, engine control unit 7.5 F18 Terminal 30 (reference voltage) 5 F19 Windscreen wipers 30 F20 Horn 10 F22 Terminal 50, diagnostics 5 F23 Starter 30 F24 Supplementary heater, heating rod 1 40 F31 Vacuum pump 15 F32 LED headlights 5 F37 Auxiliary heating 20
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Assignment of the fuses in the Instrument panel (2015)
Number Equipment Ampere rating [A] F1 Engine components 30 F2 Seat adjustment 10 F3 Hydraulic pump cover (Cabriolet) 40 F4 MM controls, MMI-components 7,5 F5 Gateway 5 F6 Anti-theft alarm system 5 F7 Climate/heating control, selector lever (automatic transmission), parking heater, rear window heater relay coil 10 F8 Diagnosis, electrical parking brake switch, light switch, rain/light sensor, interior lighting 10 F9 Steering column switch module 1 F10 Display 5 F11 Reversible driver’s side safety belt tensioners 25 F12 MMI area 15 / 20 F13 Adaptive dampers control module 20 F14 Climate control system blower 30 F15 Electronic steering column lock 10 F16 MMI area 7,5 F17 Instrument cluster 5 F18 Rearview camera 7,5 F19 Convince key system control module, tank system 7,5 F20 Tank system 7,5 F21 — — F22 — — F23 Exterior lighting, heated washer fluid nozzles 40 F24 Panorama sunroof/ power top control modu le, power top latch (Cabriolet) 20 / 30 F25 Door/dr iver’s side doors (for example power windows) 30 F26 Seat heating 30 F27 Sound-amplifier 30 F28 Power top control module, electronics (Cabriolet) 5 F29 Interior lights 7,5 F30 — — F31 Exterior lighting 40 F32 Driver assistance systems 7,5 F33 Airbag 5 F34 Button illumination, coils for upper cab in heating relay (Cabriolet) and socket relay, interior sound, backup light switch, temperature sensor, oil level sensor 7,5 F35 Diagnosis, headlight range control system, air quality sensor, automatic dimming rearview mirror 10 F36 Right cornering light/ right LED-headlight 15 F37 Left cornering light/ left LED-head light 15 F38 — — F39 Door/front passenger’s side doors (for example, power windows) 30 F40 Sockets 20 F41 Reversible front passenger’s side safety belt tensioners 25 F42 Central locking components, windshield washer system 40 F43 Headlights, lighting 30 F44 All wheel drive 15 F45 — — F46 — — F47 — — F48 — — F49 Starter, clutch sensor, head light relay coil 5 F50 — — F51 — — F52 — — F53 Rear window defogger 30
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Assignment of the fuses in the Engine compartment (2015)
Number Equipment Ampere rating [A] F1 ESC control module 40 F2 ESC control module 40 F3 Engine control module (gasoline/diesel) 15 / 30 F4 Engine cooling, engine components, auxiliary heater coil relay (1+2), secondary air injection pump relay 5 / 10 F5 Engine components, tank system 7,5 / 10 / 15 F6 Brake light sensor 5 F7 Engine components, water pumps 7,5 / 10 / 15 F8 Oxygen sensor 10 / 15 F9 Engine components, exhaust door, glow time control module, SULEV valve 5 / 10 / 20 F10 Fuel injectors, fuel control module 15 / 20 F11 Auxiliary heater heating element2 40 F12 Auxiliary heater heating element3 40 F13 Automatic transmission control module 15 / 30 F14 — — F15 Horn 15 F16 Ignit ion coil 5 / 20 F17 ESC contra I module, engine control module 7,5 F18 Terminal 30 (reference voltage) 5 F19 Windshield wipers 30 F20 Horn 10 F21 — — F22 Terminal SO diagnosis 5 F23 Starter 30 F24 Auxiliary heater heat ing element 1 40 F25 — — F26 — — F27 — — F28 — — F29 — — F30 — — F31 Vacuum pump 15 F32 LED headlights 5
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Assignment of the fuses in the Instrument panel (2016)
Number Equipment F1 Engine components F2 Seat adjustment F3 Hydraulic pump cover (Cabriolet) F4 MM controls, MMI-components F5 Gateway F6 Selector lever (automatic transmission) F7 Climate/beating control, selector lever (automatic transmission), parking heater, rear window heater relay coil F8 Diagnosis, electromechanical parking brake switch, light switch , rain and light sensor, interior lighting communication box (Plug-in hybrid drive) anti-theft alarm system F9 Steering column switch module F10 Display F11 Reversible driver’s side safety belt tensioners F12 MMI area F13 Adaptive dampers control module/ service plug (Plug-in hybrid drive”) F14 Climate control system blower F15 Electronic steering column lock F16 MMI area F17 Instrument cluster F18 Rearview camera F19 Convince key system control module, tank system F20 Tank system F21 — F22 — F23 Exterior lighting, heated washer fluid nozzles F24 Panorama sunroof/ power top control modu le, power top latch (Cabriolet) F25 Door/driveFs side doors (for example power windows) F26 Seat heating F27 Sound-amplifier F28 Power top control module, electronics (Cabriolet) F29 Interior lights F30 — F31 Exterior lighting F32 Driver assistance systems F33 Airbag F34 Button illumination, coils for upper cabin heating relay (Cabriolet) and socket relay, interior sound, reversing light switch, temperature sensor F35 Function lighting, diagnosis, headlight range control system, air quality sensor, automatic dimming rearview mirror F36 Right cornering light/ right LED-headlight F37 Left cornering light/ left LED-head light F38 High-voltage battery (Plug-in hybrid drive) F39 Door/front passenger’s side doors (for example, power windows) F40 Sockets F41 Reversible front passenger’s side safety belt tensioners F42 Central locking components, windshield washer system F43 Headlights, lighting F44 All wheel drive F45 — F46 — F47 Rear window wiper F48 Outer noise amplifier (Plug-in hybrid drive) F49 Starter, clutch sensor, headlight relay coil, high-voltage battery (Plug-in hybrid drive) F50 — F51 — F52 — F53 Rear window defogger
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Assignment of the fuses in the Engine compartment (2016)
Number Equipment F1 ESC control module F2 ESC control module F3 Engine control module (gasoline/diesel) F4 Engine cooling, engine components, auxiliary heater coil relay (1+2), secondary air injection pump relay F5 Engine components, tank system F6 Brake light sensor F7 Engine components, water pumps F8 Oxygen sensor F9 Engine components, exhaust door, glow time control module, SULEV valve F10 Fuel injectors, fuel control module F11 Auxiliary heater heating element2 F12 Auxiliary heater heating element3 F13 Automatic transmission control module F14 — F15 Horn F16 Ignition coil/ power electronics (Plug-in hybrid drive) F17 ESC contra I module, engine control module F18 Terminal 30 (reference voltage) F19 Windshield wipers F20 Horn F21 — F22 Terminal SO diagnosis F23 Starter F24 Auxiliary heater heating element 1, brake booster (Plug-in hybrid drive) F25 — F26 — F27 — F28 — F29 — F30 — F31 Vacuum pump/water pump (Plug-in hybrid drive) F32 LED headlights F33 Brake booster memory (Plug-in hybrid drive) F34 Brake booster memory (Plug-in hybrid drive) F34 Relay (Plug-in hybrid drive)
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Assignment of the fuses in the Instrument panel (2017, 2018, 2019, 2020)
№ Equipment F1 AdBlue engine components F2 Seat adjustment F3 Power top hydraulic pump F4 Infotainment control panel, Infotainment components F5 Gateway F6 Selector lever (automatic transmission) F7 Air conditioning/heating Controls, auxiliary heating, rear window defogger relay, tire pressure monitor F8 Electromechanical parking brake switch, light switch, rain/light sensor, anti-theft alarm system, diagnostic connector, roof module, emergency cali system, headlight range control F9 Steering column switch module F10 Infotainment system display F11 Left vehicle electrical system control module F12 Infotainment components F13 Driver’s side safety belt tensioner F14 Heating/air conditioning system blower F15 Electronic steering column lock F16 Infotainment components F17 Instrument cluster F18 Rearview camera F19 Convenience access control module F20 Engine components F21 Steering column, steering wheel heating switch module F23 Panorama glass roof/power top control module, power top latch F24 Right vehicle electrical system control module F25 Driver’s side front/rear power Windows F26 Seat heating F27 Interior lights F28 Power top control module F29 Interior lights F30 Diagnostic connector F32 Front camera, parking system, ACC sensor, lañe change assist F33 Airbag F34 Hold assist button, interior sound, revers-ing light switch, temperature sensor, neck heating relay coil and socket relay, power top operation button F35 Air quality sensor, automatic dimming rearview mirror, diagnostic connector, cen-ter consolé power supply F36 Right headlight (LED, Matrix LED) F37 Left headlight (LED, Matrix LED) F38 High-voltage battery F39 Passenger’s side front/rear power Windows F40 Sockets F41 Passenger’s side safety belt tensioner F42 Central locking area F43 Sound-amplifier F44 All wheel drive F47 Rear window wiper F48 Outer sound actuator F49 Clutch sensor (relay 1+2), high-voltage battery, power electronics F52 Control module for suspensión control F53 Rear window defogger
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Assignment of the fuses in the engine compartment (2017, 2018, 2019, 2020)
№ Equipment F1 Electronic Stabilization Control (ESC) F2 Electronic Stabilization Control (ESC) F3 Engine control module F4 Engine components, engine cooling, auxiliary heater coil relay (1+4+7), secondary air injection pump relay F5 Engine components, fuel tank system (diesel), CNC cut-off valve F6 Brake light switch F7 Engine components, water pumps, tank system (gasoline engine) F8 Heat oxygen sensor F9 Engine components, exhaust door, glow time control module (relay 6) F10 Fuel control module, fuel pump F11 Auxiliary heater heating element 2, engine components, secondary air pump F12 Auxiliary heater heating element 3, vacuum pump F13 Automatic transmission F15 Horn F16 Ignition coil (relay 8), power and control electronics F17 Electronic Stabilization Control (ESC), engine control module (relay 5) F18 Terminal 30 (voltage reference), battery monitoring F19 Windshield wipers F20 Anti-theft alarm system F21 Automatic transmission F22 Terminal 50 diagnosis, engine control module F23 Starter F24 Auxiliary heater heating element 1, brake booster F31 Vacuum pump, water pump, high pressure pump, fuel injectors F33 Brake pressure reservoir, recuperation, transmission fluid pump F34 Brake booster F35 A/C function relay F36 Left front headlamp F37 Parking heater F38 Right front headlamp
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