The fifth-generation Audi A6 was first revealed in February 2018, with its official premiere taking place at the Geneva Motor Show in March 2018. The station wagon (Avant) variant was introduced in April 2018, followed by a mid-cycle refresh in 2022. This guide provides detailed fuse box diagrams and locations for the Audi A6 C8 (fifth generation; MLB Evo platform; Type 4K) for model years 2018 through 2024.
Below, you will find the locations and diagrams of the power distribution boxes. Fuses designated for the “Cigarette Lighter” and “Fuel Pump” are highlighted in bold.
Luggage Compartment
The rear fuse panel is located on the left side of the luggage compartment, behind the side trim panel near the rear seat backrest.
| Diagram | |
|---|---|
|
|
| No. | Description |
| Panel A (black) | |
| A1 | 2021–2022: Thermal management system |
| A3 | Rear passenger-side seat belt tensioner |
| A4 | Rear driver-side seat belt tensioner |
| A5 | Adaptive air suspension system |
| A6 | Automatic transmission |
| A7 | Panoramic sunroof, rear spoiler |
| A8 | Heated rear seats |
| A9 | 2018–2019: Central locking, taillights / 2020: Left taillight / 2021–2024: Body Control Module (BCM), left taillight |
| A10 | Front driver-side seat belt tensioner |
| A11 | 2018–2019: Central locking, power rear sunblind / 2020: Central power tailgate lock, fuel filler door, power tailgate / 2021–2024: Central power tailgate lock, fuel filler door, power sun visor, power tailgate |
| A12 | Power tailgate control module |
| Panel B (red) | |
| B1 | 2018–2019: Empty / 2020: Active roll stabilization control module |
| B2 | 2018–2019: Empty / 2020: High-voltage service disconnect switch |
| B4 | 2018–2019: Empty / 2020: Electric motor / 2021–2024: Electric drive system, power electronics |
| B5 | 2018–2020: Brake system / 2021–2024: Brake system, electromechanical brake booster |
| B6 | 2018–2019: Empty / 2020–2022: High-voltage battery coolant pump |
| B7 | 2018–2019: Empty / 2020: Hybrid auxiliary climate control with remote / 2021: Auxiliary climate control |
| B8 | 2018–2019: Empty / 2020: High-voltage A/C compressor / 2021–2022: Climate control compressor |
| B9 | Auxiliary battery control module |
| B10 | 2018–2019: Empty / 2020–2024: High-voltage battery pack |
| B11 | 2018–2019: Empty / 2020–2024: High-voltage battery charger |
| B14 | 2018–2019: Empty / 2020–2024: Thermostat, coolant pump |
| B15 | 2018–2019: Empty / 2020–2024: Thermal management control module |
| B16 | 2018–2019: Empty / 2020: Data bus diagnostic interface (Gateway) |
| Panel C (brown) | |
| C1 | Driver assistance systems control module |
| C2 | 2018–2020: Telematics/telephone control module, roof antenna / 2021–2024: Telematics/telephone control module |
| C3 | 2018–2019: Front right lumbar support / 2020–2021: Front passenger seat electronics, right lumbar support / 2022: Right lumbar support |
| C4 | Blind spot monitoring (Side Assist) |
| C5 | 2018–2019: Empty / 2020–2021: Rear climate control panel / 2022: Rear seat remote control display |
| C6 | Tire Pressure Monitoring System (TPMS) |
| C7 | Emergency call system control module |
| C8 | 2018–2019: Empty / 2020–2024: Auxiliary heater remote control receiver, fuel pump control module |
| C9 | Gear selector lever module |
| C10 | TV tuner, communication and telematics control module |
| C11 | Keyless entry and start system (NFC) |
| C12 | HomeLink (garage door opener) |
| C13 | Rearview camera, surround-view cameras |
| C14 | Central locking, taillights |
| C16 | Front passenger-side seat belt tensioner |
| Panel D (black) | |
| D1-D16 | Empty |
| Panel E (red) | |
| E2 | 2021–2022: Exterior antenna |
| E3 | Exhaust flap control, active sound system, climate control power socket |
| E4 | Rear climate control panel |
| E5 | Trailer hitch lighting (right), rear right seat adjustment |
| E7 | Trailer hitch control module |
| E8 | Trailer hitch lighting (left), rear left seat adjustment |
| E9 | Trailer hitch electrical socket, high-voltage battery system |
| E10 | Sport differential (quattro) |
| E11 | Exhaust gas treatment (SCR/AdBlue) |
| E12 | 48V starter-alternator |
Additional fuses:
A. | Front passenger seat adjustment with memory control module (RHD) – 15A
B. | Empty
C. | Rear window defogger relay – 30A
D. | Adaptive air suspension compressor electronics – 40A
E. | Empty
F. | Empty
Passenger Compartment
There are two main fuse blocks in the passenger compartment responsible for protecting the vehicle's electrical circuits.
Fuse box #1
It is located behind the trim panel in the driver's footwell.
Accessing the fuse panel.
| Diagram | |
|---|---|
|
|
| No. | Description |
| Panel A (black) | |
| A1 | 2018–2019: Empty / 2020–2023: Oxygen sensor heater, catalytic converter heating |
| A2 | Engine management components |
| A3 | Engine management components |
| A4 | Engine management components |
| A5 | Brake pedal switch |
| A6 | 2018–2019: Engine electronics / 2020–2024: Valve control, camshaft adjustment |
| A7 | Engine management components |
| A8 | Engine management components |
| A9 | 2018–2020: Engine electronics / 2021–2024: Engine electronics, 48V coolant pump, 48V starter-alternator |
| A10 | Oil pressure sensor, oil temperature sensor |
| A11 | 2018–2019: Starter relay / 2020–2024: Engine electronics, 48V coolant pump, 48V starter-alternator, 12V starter-alternator |
| A12 | Engine electronics, valve control, active engine mounts |
| A13 | Radiator cooling fan |
| A14 | 2018–2019: Engine Control Module (ECM) / 2020–2024: Engine Control Module (ECM), fuel injectors |
| A15 | 2018–2020: Engine sensors / 2021–2024: Engine sensors, ignition coils, oxygen sensors |
| A16 | Fuel Pump (Audi A6 fuel pump fuse) |
| Panel B (red) | |
| B1 | Anti-theft alarm system |
| B2 | Engine Control Module (ECM) |
| B3 | Front driver-side lumbar support |
| B5 | Alarm horn (siren) |
| B6 | Electromechanical parking brake |
| B7 | Data bus diagnostic interface (Gateway) |
| B8 | 2018–2019: Interior 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 | On-Board Diagnostics (OBD) port, rain/light sensor |
| B13 | Climate control system |
| B14 | Front passenger door control module |
| B15 | A/C compressor, Body Control Module (BCM) |
| B16 | Auxiliary battery control module, brake pressure accumulator |
| Panel C (red) | |
| C1 | Engine ignition coils |
| C3 | 2018–2019: Empty / 2020–2024: High-voltage PTC heater, A/C compressor |
| C5 | Active engine mounts |
| C6 | Transmission Control Module (TCM) |
| C7 | Instrument cluster |
| C8 | HVAC fresh air blower motor |
| C9 | Windshield wiper control module |
| C10 | Dynamic steering control module |
| C11 | Starter motor relay |
| C12 | 2018–2019: Empty / 2020: Automatic transmission / 2021–2024: Automatic transmission fluid pump |
| Panel D (black) | |
| D1 | Heated front seats |
| D2 | Windshield wipers |
| D3 | Left headlight electronics |
| D4 | Panoramic sunroof |
| D5 | Front driver door control module |
| D6 | 12V Sockets (“Cigarette Lighter”) |
| D7 | Rear right door control module |
| D8 | All-wheel drive (quattro) control module |
| D9 | Right headlight electronics |
| D10 | Windshield/headlight washer system |
| D11 | Tailgate control module (left) |
| D12 | Auxiliary parking heater |
| Panel E (brown) | |
| E1 | 2018–2019: Seat ventilation, heated seats, auto-dimming rearview mirror, climate control system, rear climate control panel / 2020–2024: Seat ventilation, seat electronics, auto-dimming rearview mirror, rear climate control panel, OBD port, Traffic Message Channel (TMC) antenna |
| E2 | 2018–2019: Climate control system / 2020–2024: Body Control Module (BCM), Gateway control module |
| E3 | Active sound generator (exhaust sound tuning) |
| E4 | Transmission coolant valve |
| E5 | Starter relay |
| E7 | Active accelerator pedal |
| E8 | Night vision system, active roll stabilization |
| E9 | Adaptive Cruise Assist, front radar sensor |
| E11 | Intersection Assist, driver assistance systems |
Fuse box #2
Located in the dashboard end panel on the driver's side.
Remove the side trim cover to access the fuses.
Diagram
No. | Description
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 cluster
A8. | MMI front display (upper/lower)
A9. | Heated steering wheel
Panel B (brown)
B2. | MMI infotainment system control module
B3. | Audio system, USB ports, “Cigarette Lighter” fuse
B4. | Head-Up Display (HUD)
B5. | Climate control system, air fragrancing system, ionizer
B9. | Steering column lock
