Audi Q8 | 2018-2025 | Fuse Box Diagrams and Locations

The Audi Q8, a mid-size luxury crossover SUV, has been available from 2018 to the present. Known for its bold design, advanced technology, and impressive performance, the Q8 combines the practicality of an SUV with the elegance and sportiness expected from Audi’s flagship models.

In this article, you will find detailed fuse box diagrams for Audi Q8 models produced in 2018, 2019, 2020, 2021, 2022, 2023, 2024 and 2025. These diagrams offer essential insights into the vehicle’s electrical systems, helping owners and technicians understand the assignment of each fuse (fuse layout). This information is indispensable for diagnosing electrical issues, performing routine maintenance, or addressing necessary repairs.

This guide serves as a practical resource for understanding the electrical system of the Audi Q8, ensuring that owners have the knowledge needed to maintain the functionality, reliability, and performance of this luxurious crossover.

Fuse Box Location

Passenger Compartment

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The location of the fuses in the passenger compartment: Audi Q8 (2019, 2020...)

In the cabin, there are two fuse blocks – on the left front side of the cockpit and in the driver’s footwell.

Luggage Compartment

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The location of the fuses in the trunk: Audi Q8 (2019, 2020...)

It is located under the cover on the left side of the luggage compartment.

Fuse Box Diagrams

Cockpit fuse panel

Instrument panel fuse box diagram: Audi Q8 (2019, 2020...)

Assignment of the fuses on the left side of the dashboard

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№Description
A2Audi phone box, roof antenna
A32019: Climate control system, fragrance system, ionizer;
2020: Climate control system, fragrance system, particulate matter sensor
2021-2022: Climate control system, fragrance system
A4Head-up display
A5Audi music interface, USB sockets
A7Steering column lock
A8Upper/lower display
A9Instrument cluster
A10CD/DVD player
A11Light switch, switch panels
A12Steering column electronics
A13Volume control
A14MMI Infotainment system control module
A15Steering column adjustment
A16Steering wheel heating

Driver’s footwell fuse panel

Version 1

Driver's footwell fuse box diagram (ver.1): Audi Q8 (2019, 2020...)

Version 2

Driver's footwell fuse box diagram (ver.2): Audi Q8 (2019, 2020...)

Assignment of the fuses in the driver’s footwell

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№Description
Fuse panel A (brown)
A12019: Not Used;
2020-2021: Catalytic converter heating
2022: Catalytic converter heating, camshaft adjustment
A22019-2021: Engine components
2022: Mass airflow sensor, heated oxygen sensors
A32019-2021: Engine components
2022: Motor heating, fuel injectors, exhaust doors
A42019-2021: Engine components
2022: Hot water pump, exhaust doors, NOX sensor, particulate sensor, biodiesel sensor
A5Brake light sensor
A62019-2021: Engine components
2022: Engine valves
A72019-2021: Engine components
2022: Heated oxygen sensor, mass airflow sensor
A82019-2021: Engine components
2022: High pressure pump, motor mount
A92019-2021: Engine components
2022: Motor components, motor relay
A10Oil pressure sensor, oil temperature sensor
A112019: Engine Start;
2020-2021: Engine components
2022: 48 volt coolant pump, 48 volt starter generator, 12 volt starter generator
A122019-2021: Engine components
2022: Engine valves
A13Engine cooling
A14Engine control module
A152019-2021: Engine sensors
2022: Heated oxygen sensors
A16Fuel pump
Fuse panel B (red)
B1Ignition coils
B32019: Not Used;
2020-2022: High-voltage heating
B42019: Not Used;
2020-2022: Electric compressor
B5Engine mount
B6Windshield washer system control module
B7Instrument panel
B8Climate control system fresh air blower
B9Driver assist systems control module
B10Emergency call system
B112019-2021: Engine start
2022: Engine start, electric drive clutch
Fuse panel C (black)
C1Front seat heating
C2Windshield wipers
C3Left headlight electronics
C4Panoramic glass roof
C5Left front door control module
C6Sockets
C7Right rear door control module
C9Right headlight electronics
C10Windshield washer system/headlight washer system
C11Left rear door control module
C12Parking heater
Fuse panel D (brown)
D12019-2020: Seat ventilation, seat electronics, rearview mirror, rear climate control panel, diagnostic connector
2021-2022: Seat ventilation, seat electronics, rearview mirror, rear climate control system control panel, diagnostic connection, traffic information antenna (TMC)
D22019: Climate control module, gateway control module;
2020-2022: Vehicle electrical system control module, gateway control module
D3Sound actuator/exhaust sound tuning
D42019: Transmission heating valve, Transmission fluid cooling valve;
2020-2022: Transmission fluid cooling valve
D52019-2021: Engine start
2022: Engine start, electric drive
D82019: Night vision assist;
2020-2022: Night vision assist, active roll stabilization
D92019-2020: Adaptive cruise assist, front radar
2021-2022: Adaptive cruise assist, front wheel sensors
D102019: Not Used;
2020-2022: Exterior sound
D11Intersection assistant, driver assist systems
D13Left headlight
D152021-2022: USB input
Fuse panel E (red)
E1Anti-theft alarm system
E2Engine control module
E3Front seat electronics, lumbar support
E4Automatic transmission selector lever
E5Horn
E6Parking brake
E7Gateway control module (diagnosis)
E82019: Interior headliner lights;
2020-2022: Roof electronics control module
E92019: Not Used;
2020-2022: Drivetrain generator
E10Airbag control module
E112019: Electronic Stabilization Control (ESC);
2020-2022: Electronic Stabilization Control (ESC), Anti-Lock Braking System (ABS)
E12Diagnostic connector, light/rain sensor
E13Climate control system
E14Right front door control module
E152019: Climate control system, body electronics;
2020-2022: Climate control system compressor
E162022: Brake system pressure reservoir

Luggage Compartment Fuse Box

Trunk fuse box diagram: Audi Q8 (2019, 2020...)

Assignment of the fuses in the trunk

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№Description
Fuse panel A (black)
A12019: Not Used;
2020-2021: High-voltage heating, thermomanagement
A5Air suspension/damping
A6Automatic transmission
A72019: Rear seat heating;
2020-2021: Rear seat heating, control panel for rear climate control
A9Central locking, left tail light
A10Front belt tensioner on driver’s side
A112019: Central locking, rear blind;
2020-2021: Luggage compartment lid central locking, fuel filler door, luggage compartment cover
A12Luggage compartment lid control module
Fuse panel B (red)
B1Rear climate control system blower
B2Sound-amplifier
B3Exhaust treatment, sound actuator
B4Rear climate control system control panel
B5Right trailer hitch light
B6Trailer hitch positioning motor
B7Trailer hitch release
B8Left trailer hitch light
B9Trailer hitch socket
B10All wheel drive sport differential
B11Exhaust treatment
B12Driver’s side rear safety belt tensioner
Fuse panel C (brown)
C1Driver assist systems control module
C2Audi phone box
C32019: Right front lumbar support;
2020-2021: Front seat electronics, right lumbar support
2022: Right lumbar support
C4Side assist
C6Tire pressure monitoring system
C72021-2022: Exterior antenna
C82019: Fuel tank monitoring;
2020-2022: Parking heater radio receiver, fuel tank monitoring
C102019: TV tuner;
2020-2022: TV tuner, data exchange and telematics control module
C11Convenience access and start authorization control module
C12Garage door opener
C13Rearview camera, peripheral cameras
C142019: Central locking, tail lights;
2020: Right tail light, comfort system
2021-2022: Convenience system control module, right tail light
C15Passenger’s side rear safety belt tensioner
C16Front belt tensioner on front passenger’s side
Fuse panel D (red)
D12020-2022: Active roll stabilization
D22022: High-voltage battery
D32022: High-voltage battery coolant pump
D42022: Power electronics control module
D52019: Brake system
2022: Brake booster
D6Voltage converter
D72022: Engine start
D82022: Climate control system compressor
D9Auxiliary battery control module
D102022: High-voltage battery
D112022: Charging system
D122022: Auxiliary heating and air conditioning radio receiver
D142022: Thermal management, coolant pumps
D152020-2022: Thermomanagement control module
Fuse panel E (brown)
E72019: Front seat heating;
2022: Front seat heating
E92019: Exhaust treatment;
2022: Exhaust treatment
E102022: Rear seat heating, rear climate control system controls
E122019: Exhaust treatment;
2022: Exhaust treatment

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