Audi A8 D5 (2021) – fuse box

Audi A8 D5 – fuse box diagram

Year of production:2021.

The cigarette lighter fuse (power socket) on the Audi A8 D5 is the B7 fuse in the fuse box in the footwell.

Location of the fuse box

Passenger compartment

There are two fuse blocks here:

The first is on the left side of the cockpit. And the other is behind the cover in the left footwell.



It is located on the left side of the boot, behind the side trim panel.


Fuse box diagrams

Foot fuse panel

Arrangement of fuses in the footwell

Number Description
Fuse panel 1 (brown)
A1 Engine ignition coils
A2 Engine start;

Electric motor clutch.

A3 Windshield wiper control module
A4 Left headlight electronics
A5 Air conditioning blower
A6 Instrument panel
A7 Windshield wipers
A9 Panoramic glass sunroof
Fuse panel 2 (black)
B1 Engine mount
B2 Left Rear Door Control Module
B3 Windscreen washers;

Headlight washers.

B4 Right headlight electronics
B5 Front seat heating
B6 Right rear door control module
B7 12V sockets
B8 Left front door control module
B9 Auxiliary heating
Fuse panel 3 (red)
C1 Anti-theft alarm system
C2 Engine control module
C5 Horn
C6 Parking brake
C7 CAN gate control module (diagnostics)
C8 Control module in the headliner
C9 Driver assistance systems control module
C10 Airbag control module
C11 Electronic Stability Control (ESC);

Anti-lock Braking System (ABS).

C12 Rear air conditioning control unit;

Diagnostic connector;

Light and rain sensor.

C13 Air conditioning, heating and ventilation control system;

Vehicle electrical system control module.

C14 Right front door control module
C15 Air conditioning blower;

Vehicle electrical system control module.

C16 Brake system pressure reservoir
Fuse panel 4 (black)
D2 Engine components;

Water pump;

Heated oxygen sensor.

D3 Exhaust doors;

Fuel injectors;

An air inlet;

Engine heating.

D4 NOx sensor;

Particulate sensor;

Biodiesel sensor;

Exhaust doors.

D5 Brake light sensor
D6 Engine valves;

Camshaft adjustment.

D7 Heated oxygen sensor;

Air mass sensor.

D8 Water pump;

High pressure pump;

Air mass sensor;

Fuel pressure adjustment.

D9 48V alternator starter;

48V water pump;

Engine components.

D10 Oil pressure sensor;

Oil temperature sensor.

D11 48V alternator starter;

48V water pump;

Alternator starter 12V.

D12 Engine valves;

Engine mount.

D13 engine cooling
D14 Engine control module;

Fuel injectors.

D15 Heated oxygen sensor;

Charge air cooling;

Ignition coils.

D16 Fuel pump
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Fuse panel in the cockpit

Arrangement of fuses on the left side of the dashboard

Number Description
A1 Air conditioning, heating and ventilation system;Indoor air sensor.
A2 Audi Phonebox;

External antenna.

A3 Air conditioning, heating and ventilation control system;

Fragrance system;

Particulate sensor.

A4 Head-up display
A5 Audi music interface;

USB sockets.

A7 Steering column lock
A8 Lower and upper display
A9 Dashboard
A10 Volume control
A11 Light switch;

Switch panels.

A12 Steering column electronics
A14 MMI Infotainment system control module
A15 Steering column adjustment
A16 Steering wheel heating


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Fuse box in the trunk

Assignment of fuses in the trunk

Number Description
Fuse panel 1 (black)
A1 Thermal management
A5 Pneumatic suspension
A6 Automatic Transmission
A7 Right rear seat adjustment
A8 Rear seat heating
A9 Rear lights.
A10 Driver’s side front belt tensioner
A11 Trunk lid;

Comfort system control module

Rear blind;

Fuel filler door.

A12 Trunk lid control module
Fuse panel 2 (red)
B1 Rear air conditioning blower
B2 External antenna
B3 Exhaust gas cleaning;

Sound activator.

B4 Rear air conditioning control panel
B5 Right trailer hitch light
B6 Trailer hitch positioning motor
B7 Towbar
B8 Left trailer hitch lamp
B9 Trailer hitch socket;

High voltage battery.

B10 Sports differential
B11 Exhaust gas treatment.
Fuse panel 3 (brown)
C1 Driver assistance systems control module
C2 Audi Phonebox at the rear
C3 Rear seat adjustment
C4 Side assistant
C5 Rear entertainment system (Audi tablet)
C6 Tire pressure monitoring system
C7 Emergency call system
C8 Parking heater radio receiver;

Fuel tank monitoring.

C9 Gear selector, automatic transmission
C10 Television tuner;

Data exchange control module.

C11 Opening and starting the vehicle (NFC)
C12 Garage door opener (Homelink)
C13 Rear view camera;

Peripheral cameras.

C14 Vehicle opening and starting (NFC);

Rear lights.

C15 Left rear seat adjustment
C16 Front passenger side belt tensioner
Fuse panel 4 (black)
D1 Seat ventilation;

Rear seat heating;

Rearview mirror;


Diagnostic connector.

D2 CAN gate control module (communication)
D3 Sound activator
D4 Gearbox heating valve
D5 Engine start;

Electric engine.

D7 Active accelerator pedal.
D8 Night vision assistant;

Active suspension.

D9 Adaptive Driving Assistant
D11 Assistant at intersections;

Driver assistance systems;

Radar system;

Camera system.

D12 External sound generator
D13 USB ports
D14 Right headlight
D15 Left headlight
Fuse panel 5 (red)
E1 Active suspension.
E2 Service switch.
E3 Refrigerator
E4 Electric drive system
E5 Braking system
E6 High voltage battery water pump.
E7 Additional control of air conditioning, heating and ventilation
E8 Air conditioning compressor.
E9 Auxiliary battery control module
E10 High voltage battery.
E11 High voltage charger
E14 Thermal management.
E15 Thermal management.
Fuse panel 6 (white)
F1 Rear center armrest heating
F2 Rear sliding sunroof
F3 CD / DVD player
F5 AC socket
F6 Passenger’s rear seat belt pretensioner
F7 Heated front center armrest
F8 Rear footrest heating
F11 Rear seat remote control
F12 Driver’s side rear seat belt pretensioner
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