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).
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
Diagram
Assignment
| Fuse Panel A (black) | |
| A2 | Steering column adjustment |
| A3 | CD/DVD player |
| A4 | Steering column electronics |
| A5 | Light switch, switch panels |
| A6 | Volume control |
| A7 | Instrument panel |
| A8 | Front MMI display (upper/lower) |
| A9 | Steering wheel heating |
| Fuse Panel B (brown) | |
| B2 | MMI Infotainment system control module |
| B3 | Audi Music Interface, USB connection |
| B4 | Screen on the windshield |
| B5 | Climate control system, aromatization system, ionizer |
| B9 | Steering 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).
Diagram
Designation
| Fuse Panel A (black) | |
| A1 | 2018-2019: Not used; |
| 2020-2023: Catalytic converter heater | |
| A2 | Engine Components |
| A3 | Engine Components |
| A4 | Engine Components |
| A5 | Brake light sensor |
| A6 | 2018-2019: Engine Components Engine Components; |
| 2020-2024: Engine valves, camshaft adjustment | |
| A7 | Engine Components |
| A8 | Engine Components |
| A9 | 2018-2020: Engine Components |
| 2021-2024: Engine components, 48V water pump, 48V transmission alternator | |
| A10 | Oil pressure sensor, oil temperature sensor |
| A11 | 2018-2019: Engine Startup; |
| 2020 – 2024: Engine components, 48V water pump, 48V transmission alternator, 48V transmission alternator, 12V transmission alternator | |
| A12 | Engine components, engine valves, engine mount |
| A13 | Radiator fan |
| A14 | 2018-2019: Engine control module; |
| 2020-2024: Engine control module, fuel injectors | |
| A15 | 2018-2020: Engine sensors |
| 2021-2024: Engine sensors, ignition coils, oxygen sensors | |
| A16 | Fuel Pump |
| Fuse Panel B (red) | |
| B1 | Anti-theft alarm system |
| B2 | Engine control module |
| B3 | Left front lumbar support |
| B5 | Siren |
| B6 | Parking brake |
| B7 | Gateway control module (diagnostics) |
| B8 | 2018-2019: Interior upholstery lighting; |
| 2020-2024: Roof electronics control module | |
| B9 | Driver assistance systems control module |
| B10 | Airbag Control Module |
| B11 | Electronic Stability Control (ESC), Anti-lock Braking System (ABS) |
| B12 | Diagnostic connector, light/rain sensor |
| B13 | Climate control system |
| B14 | Right front door control module |
| B15 | Climate control compressor, body electronics |
| B16 | Auxiliary battery control module, brake system pressure reservoir |
| Fuse Panel C (red) | |
| C1 | Engine ignition coils |
| C3 | 2018-2019: Not used; |
| 2020-2024: High voltage heating, compressor | |
| C5 | Engine mount |
| C6 | Automatic transmission |
| C7 | Dashboard |
| C8 | Fresh air blower of climate control system |
| C9 | Windshield wiper control module |
| C10 | Dynamic steering |
| C11 | Engine Start |
| C12 | 2018-2019: Not used; |
| 2020: Automatic transmission | |
| 2021-2024: Automatic transmission fluid pump | |
| Fuse Panel D (black) | |
| D1 | Heated front seats |
| D2 | Windshield wipers |
| D3 | Left headlight electronics |
| D4 | Panoramic glass roof |
| D5 | Left front door control module |
| D6 | Sockets |
| D7 | Right rear door control module |
| D8 | Four-wheel drive (quattro) control module |
| D9 | Right headlamp electronics |
| D10 | Windshield washer/headlight washer system |
| D11 | Left tailgate control module |
| D12 | Parking heater |
| Fuse Panel E (brown) | |
| E1 | 2018-2019: 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) | |
| E2 | 2018-2019: Climate control system; |
| 2020-2024: Vehicle electrical system control module, gateway control module | |
| E3 | Sound actuator/exhaust sound settings |
| E4 | Transmission heating valve |
| E5 | Engine start |
| E7 | Active gas pedal pedal |
| E8 | Night vision system, active roll stabilization |
| E9 | Adaptive cruise assistant, front radar |
| E11 | Intersection 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.
Diagram
Allocation
| Fuse Panel A (black) | |
| A1 | 2021-2022: Thermal control |
| A3 | Passenger side rear seat belt tensioner |
| A4 | Driver’s side rear seat belt tensioner |
| A5 | Air suspension |
| A6 | Automatic transmission |
| A7 | Rear sliding sunroof, rear spoiler |
| A8 | Heated rear seats |
| A9 | 2018-2019: Central locking, taillights; |
| 2020: Left taillight | |
| 2021-2024: Comfort control module, left taillight | |
| A10 | Driver’s side front seat belt tensioner |
| A11 | 2018-2019: 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 | |
| A12 | Luggage compartment lid control module |
| Fuse Panel B (red) | |
| B1 | 2018-2019: Not used; |
| 2020: Suspension stabilization control module | |
| B2 | 2018-2019: Not used; |
| 2020: Service disconnect switch | |
| B4 | 2018-2019: Not used; |
| 2020: Electric motor | |
| 2021-2024: Electric drive system, power electronics | |
| B5 | 2018-2020: Brake system |
| 2021-2024: Braking system, brake booster system | |
| B6 | 2018-2019: Not used; |
| 2020-2022: High voltage battery water pump | |
| B7 | 2018-2019: Not used; |
| 2020: Hybrid interior climate control with remote control | |
| 2021: Auxiliary climate control | |
| B8 | 2018-2019: Not used; |
| 2020: Hybrid air conditioning system compressor | |
| 2021-2022: Climate control system compressor | |
| B9 | Auxiliary battery control module |
| B10 | 2018-2019: Not used; |
| 2020-2024: Hybrid high voltage battery | |
| B11 | 2018-2019: Not used; |
| 2020-2024: Hybrid battery charger | |
| B14 | 2018-2019: Not used; |
| 2020-2024: Thermostat, water pump | |
| B15 | 2018-2019: Not used; |
| 2020-2024: Thermal management control module | |
| B16 | 2018-2019: Not used; |
| 2020: Gateway | |
| Fuse Panel C (brown) | |
| C1 | Driver assistance systems control module |
| C2 | 2018-2020: Audi phone booth, roof mounted antenna |
| 2021-2024: Audi telephone box | |
| C3 | 2018-2019: Right front lumbar support; |
| 2020-2021: Front seat electronics, right front lumbar support | |
| 2022: Right lumbar support | |
| C4 | Side assist |
| C5 | 2018-2019: Not used; |
| 2020-2021: Rear climate control system control panel | |
| 2022: Rear seat remote control panel | |
| C6 | Tire pressure monitoring system |
| C7 | Emergency call system |
| C8 | 2018-2019: Not used; |
| 2020-2024: Parking heater radio, fuel tank control | |
| C9 | Automatic transmission selector lever |
| C10 | TV tuner, communication and telematics control module |
| C11 | Car opening/starting (NFC) |
| C12 | Garage door opener |
| C13 | Rearview camera, peripheral cameras |
| C14 | Central locking, tail lights |
| C16 | Front passenger side front seat belt tensioner |
| Fuse Panel D (black) | |
| D1-D16 | Not assigned |
| Fuse Panel E (red) | |
| E2 | 2021-2022: Outdoor antenna |
| E3 | Exhaust system, sound drive, air conditioner outlet |
| E4 | Rear climate control system control panel |
| E5 | Right trailer hitch light, right rear seat adjustment |
| E7 | Trailer hitch |
| E8 | Left hitch light, right rear seat adjustment |
| E9 | Socket for hitch, high voltage battery |
| E10 | All-wheel drive sport differential |
| E11 | Exhaust treatment |
| E12 | 48 V generator |
Additional items
Appointment
- 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 –
Check out our YouTube video for more on this topic. Don’t forget to subscribe!
If you know how to make the material better, write in the comments.