Audi A3 and S3 8Y (2022) – fuse and relay box

Diagrams of fuse boxes and relays – Audi A3 and S3 8Y

Applies to vehicles manufactured in the years:


Color [Amperes]

  • Black [1]
  • Violet [3]
  • Light brown [5]
  • wholemeal [15]
  • Red [10]
  • Blue [15]
  • Yellow [20]
  • White or transparent [25]
  • Green [30]
  • Orange [40]

Fuse box in the passenger compartment

Left hand drive

Right-hand drive

Number Description
F3 Towbar
F4 Exhaust gas cleaning;

Drive components.

F5 Gear selector, automatic transmission
F6 Vehicle electrical system control module
F7 Electrical system control module;

Seat heating control.

F8 Panoramic glass sunroof
F9 Driver’s side front door control module;

Driver’s side power window.

F11 Towbar
F12 Vehicle electrical system control module
F13 Vehicle electrical system control module
F14 Sound system
F16 Airbag control module
F17 Exhaust gas treatment
F18 Steering column lock;

Convenient access and commissioning of the authorization control module.

F19 Instrument cluster;

Emergency call module

F20 USB;

Infotainment system.

F21 Driver assistance systems control module;

Camera system;

Belt assistant;

Trunk lid.

F23 Front passenger’s lumbar support
F24 All-wheel drive control module
F25 Seat belt pretensioner, front left
F26 Front passenger door control module;

Passenger’s side rear power window.

F27 Seat belt pretensioner, front right
F28 High voltage battery emergency cut-off point
F29 Towbar
F30 Infotainment system
F31 Towbar
F33 Front driver’s side lumbar support
F35 Vehicle electrical system control module
F36 Air conditioning blower
F37 Trunk lid
F39 Electronic steering column
F40 Anti-theft alarm
F41 Diagnostic connector
F42 Gear selector, automatic transmission
F43 Tire pressure monitoring;

Air conditioning control;

Parking heating;

Interior temperature sensor;

Rear window heater relay.

F44 Particulate sensor;

Roof electronics control module;

Parking brake button;

Anti-theft alarm;

Diagnostic connector;

Headlight range adjustment;

Garage door opener control module;

Light switch;

Light and rain sensor.

F45 Electronic steering column
F46 Volume control;

Central display;

Head-up display.

F47 Suspension control
F52 12V socket
F58 Driver assistance systems control module;

Front camera;

Parking aid.

F59 Air conditioning system;

External sound;

Rearview mirror;

Reverse light switch;

Center console switch panel;

Air quality sensor;

12V socket relay.

F60 Diagnostic connector
F61 Clutch position sensor;

Electric drive train;

High voltage battery.

F64 Passenger side passenger detection system;

Passenger airbag warning lamp turned off.

F65 External sound
F66 Rear window wiper
F67 Rear window defogger
READ:  Audi A4 and S4 (B8 / 8K) (2008-2016) - fuse box


Fuse box in the engine compartment

Number Description
F2 Powertrain control module;

Electronic Stability Control (ESC);


F3 Engine components;

Fuel pump;

Air conditioning;

High voltage charger;

Electric drive system.

F4 Left headlight
F5 Right headlight
F7 Cooling the gearbox fluid
F8 Brake servo
F9 Horn
F10 Wipers
F11 Air conditioning system
F12 Transmission control module
F13 Electronic Stability Control (ESC);


F14 Parking heating;

Sound generator.

F15 Electronic Stability Control (ESC);


F16 Automatic Transmission
F17 Exhaust gas cleaning;

Air conditioning;

Auxiliary heating.

F18 Air conditioning;

Auxiliary heating.

F21 Powertrain control module
F22 Engine start
F23 Powertrain control module
F24 Engine components;

Diesel module;

Exhaust gas cleaning;

Fuel leakage diagnostics;

Oil level and temperature sensor;

Engine cooling.

F25 Engine components;

Exhaust gas treatment.

F26 Engine components;

Exhaust doors;

Fuel leakage diagnostics;

Engine cooling;

Cooling the gearbox fluid;

Exhaust gas treatment.

F27 Heated oxygen sensor
F28 Engine components
F29 Fuel pump;

Transmission control module.

F30 engine cooling
F33 Air conditioning;

Auxiliary heating.

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