Audi A6 C8 (2018 – 2024) fuse and relay

Audi A6 C8 represents the 5th generation of the Audi A6 model range which was produced in 2018 2019 2020 2020 2021 2022 2022 2023 2024 with the designation Typ 4K. In this post We will present a description of fuses and relays Audi A6 C8 with fuse box diagrams, their locations and photo examples of performance. We will highlight the fuse responsible for the cigarette lighter (USB sockets).

Audi A6 C8

The purpose of fuses and relays may differ from those shown, depending on the year of manufacture and the level of electrical equipment in your vehicle.

Passenger compartment

Left side fuse box

At the left end of the instrument panel, behind the protective cover, there is a fuse box.


Photo – example

Photo og fuse box Audi a6 c8




Fuse Panel A (black)
A2Steering column adjustment
A3CD/DVD player
A4Steering column electronics
A5Light switch, switch panels
A6Volume control
A7Instrument panel
A8Front MMI display (upper/lower)
A9Steering wheel heating
Fuse Panel B (brown)
B2MMI Infotainment system control module
B3Audi Music Interface, USB connection
B4Screen on the windshield
B5Climate control system, aromatization system, ionizer
B9Steering column lock

Footwell fuse box

To access the fuse box, remove the cover plate (right-hand steering models). Use a flat screwdriver to remove the mounting screw cover, then loosen the screw and remove the cover (left-hand steering models).

location 2


Diagram 1


Fuse Panel A (black)
A12018-2019: Not used;
2020-2023: Catalytic converter heater
A2Engine Components
A3Engine Components
A4Engine Components
A5Brake light sensor
A62018-2019: Engine Components Engine Components;
2020-2024: Engine valves, camshaft adjustment
A7Engine Components
A8Engine Components
A92018-2020: Engine Components
2021-2024: Engine components, 48V water pump, 48V transmission alternator
A10Oil pressure sensor, oil temperature sensor
A112018-2019: Engine Startup;
2020 – 2024: Engine components, 48V water pump, 48V transmission alternator, 48V transmission alternator, 12V transmission alternator
A12Engine components, engine valves, engine mount
A13Radiator fan
A142018-2019: Engine control module;
2020-2024: Engine control module, fuel injectors
A152018-2020: Engine sensors
2021-2024: Engine sensors, ignition coils, oxygen sensors
A16Fuel Pump
Fuse Panel B (red)
B1Anti-theft alarm system
B2Engine control module
B3Left front lumbar support
B6Parking brake
B7Gateway control module (diagnostics)
B82018-2019: Interior upholstery lighting;
2020-2024: Roof electronics control module
B9Driver assistance systems control module
B10Airbag Control Module
B11Electronic Stability Control (ESC), Anti-lock Braking System (ABS)
B12Diagnostic connector, light/rain sensor
B13Climate control system
B14Right front door control module
B15Climate control compressor, body electronics
B16Auxiliary battery control module, brake system pressure reservoir
Fuse Panel C (red)
C1Engine ignition coils
C32018-2019: Not used;
2020-2024: High voltage heating, compressor
C5Engine mount
C6Automatic transmission
C8Fresh air blower of climate control system
C9Windshield wiper control module
C10Dynamic steering
C11Engine Start
C122018-2019: Not used;
2020: Automatic transmission
2021-2024: Automatic transmission fluid pump
Fuse Panel D (black)
D1Heated front seats
D2Windshield wipers
D3Left headlight electronics
D4Panoramic glass roof
D5Left front door control module
D7Right rear door control module
D8Four-wheel drive (quattro) control module
D9Right headlamp electronics
D10Windshield washer/headlight washer system
D11Left tailgate control module
D12Parking heater
Fuse Panel E (brown)
E12018-2019: Seat ventilation, heated seats, rearview mirror, climate control system, rear climate control system controls;
2020-2024: Seat ventilation, seat electronics, seat electronics, rearview mirror, rear climate control controls, diagnostic connector, traffic information antenna (TMC)
E22018-2019: Climate control system;
2020-2024: Vehicle electrical system control module, gateway control module
E3Sound actuator/exhaust sound settings
E4Transmission heating valve
E5Engine start
E7Active gas pedal pedal
E8Night vision system, active roll stabilization
E9Adaptive cruise assistant, front radar
E11Intersection Assist, Driver Assistance Systems

Additional fuses and relays may be installed next to the unit, e.g. seat and steering column adjustment control unit with memory, etc.

Luggage compartment

In the luggage compartment, near the seat backrest on the left side, another block with fuses and relays is installed under a protective cover.

location 3


Diagram 2


Fuse Panel A (black)
A12021-2022: Thermal control
A3Passenger side rear seat belt tensioner
A4Driver’s side rear seat belt tensioner
A5Air suspension
A6Automatic transmission
A7Rear sliding sunroof, rear spoiler
A8Heated rear seats
A92018-2019: Central locking, taillights;
2020: Left taillight
2021-2024: Comfort control module, left taillight
A10Driver’s side front seat belt tensioner
A112018-2019: Central lock, rear blind;
2020: Luggage compartment lid central lock, fuel filler door, luggage compartment cover
2021-2024: Luggage compartment lid central lock, fuel filler door, sun visor, luggage compartment lid
A12Luggage compartment lid control module
Fuse Panel B (red)
B12018-2019: Not used;
2020: Suspension stabilization control module
B22018-2019: Not used;
2020: Service disconnect switch
B42018-2019: Not used;
2020: Electric motor
2021-2024: Electric drive system, power electronics
B52018-2020: Brake system
2021-2024: Braking system, brake booster system
B62018-2019: Not used;
2020-2022: High voltage battery water pump
B72018-2019: Not used;
2020: Hybrid interior climate control with remote control
2021: Auxiliary climate control
B82018-2019: Not used;
2020: Hybrid air conditioning system compressor
2021-2022: Climate control system compressor
B9Auxiliary battery control module
B102018-2019: Not used;
2020-2024: Hybrid high voltage battery
B112018-2019: Not used;
2020-2024: Hybrid battery charger
B142018-2019: Not used;
2020-2024: Thermostat, water pump
B152018-2019: Not used;
2020-2024: Thermal management control module
B162018-2019: Not used;
2020: Gateway
Fuse Panel C (brown)
C1Driver assistance systems control module
C22018-2020: Audi phone booth, roof mounted antenna
2021-2024: Audi telephone box
C32018-2019: Right front lumbar support;
2020-2021: Front seat electronics, right front lumbar support
2022: Right lumbar support
C4Side assist
C52018-2019: Not used;
2020-2021: Rear climate control system control panel
2022: Rear seat remote control panel
C6Tire pressure monitoring system
C7Emergency call system
C82018-2019: Not used;
2020-2024: Parking heater radio, fuel tank control
C9Automatic transmission selector lever
C10TV tuner, communication and telematics control module
C11Car opening/starting (NFC)
C12Garage door opener
C13Rearview camera, peripheral cameras
C14Central locking, tail lights
C16Front passenger side front seat belt tensioner
Fuse Panel D (black)
D1-D16Not assigned
Fuse Panel E (red)
E22021-2022: Outdoor antenna
E3Exhaust system, sound drive, air conditioner outlet
E4Rear climate control system control panel
E5Right trailer hitch light, right rear seat adjustment
E7Trailer hitch
E8Left hitch light, right rear seat adjustment
E9Socket for hitch, high voltage battery
E10All-wheel drive sport differential
E11Exhaust treatment
E1248 V generator

Additional items

additional 2


  • A – 15A Adjusting the front passenger seat with memory control unit (right-hand drive)
  • B –
  • C – 30A Heated rear window relay
  • D – 40A Adaptive suspension compressor electronics
  • E –
  • F –

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