Audi Q8 (2023 – 2025) – fuse and relay box diagram

Audi Q8 (2023 – 2025) – fuse and relay box diagram

 

This article covers to the Audi Q8 (B3), produced from 2018 to present. It includes fuse box diagrams for the 2023, 2024 and 2025 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

 

Year of production: 2023, 2024, 2025

 

Passenger compartment

Fuse box diagram (dashboard)

Audi Q8 (2018 - 2022) - fuse and relay box diagram - passenger compartment (dashboard)
Audi Q8 (2023 – 2025) – fuse and relay box diagram – passenger compartment (dashboard)

 

Assignment of the  relays in the passenger compartment (dashboard)

Description
1
2 Audi phone box, external aerial
3 Air conditioner, perfume function
4 Head-up display
5 USB ports with charging function
7 Steering column lock
8 Upper/lower display
9 Instrument cluster
10 DVD drive
11 Light switches, switch panels
12 Steering column electronics
13 Volume control
14 MMI infotainment control unit
15 Steering column adjustment
16 Heating for steering wheel

 

Fuse box diagram (Footwell)

Version 1
Audi Q8 (2018 - 2022) - fuse and relay box diagram - passenger compartment (footwell)
Audi Q8 (2023 – 2025) – fuse and relay box diagram – passenger compartment (footwell)

 

Version 2 (RHD)
Audi Q8 (2018 - 2022) - fuse and relay box diagram - passenger compartment (footwell - RHD)
Audi Q8 (2023 – 2025) – fuse and relay box diagram – passenger compartment (footwell – RHD)

 

Assignment of the  relays in the passenger compartment (footwell)

Description
Fuse panel 1 (brown)
1 Catalytic converter heater, camshaft adjuster
2 Air mass meter, Lambda probes
3 Engine heating, injectors, exhaust flaps
4 Heating water pump, exhaust flaps, NOx sensor, particulate sensor, biodiesel sensor
5 Brake light sensor
6 Engine valves
7 Lambda probes, air mass meter
8 High-pressure pump, engine mountings
9 Engine components, engine relays
10 Oil pressure sensor, oil temperature sensor
11 48 V coolant pump, 48 V starter alternator, 12 V starter alternator
12 Engine valves
13 Engine cooling
14 Drive system control unit
15 Oxygen sensors
16 Fuel pump
Fuse panel 2 (red)
1 Ignition coils
4 Electric compressor
5 Engine mountings
6 Windscreen washer system control unit
7 Dash panel
8 Air conditioner blowers
9 Control unit for driver assist systems
10 Emergency call and communication control unit
11 Power unit start, clutch for electric drive system
Fuse panel 3 (black)
1 Seat heating (front)
2 Wipers
3 Headlight electronics (left)
4 Panorama sun roof
5 Door control unit (front left)
6 Sockets
7 Door control unit, rear right
9 Headlight electronics (right)
10 Control unit for windscreen/headlight washer system
11 Door control unit, rear left
12 Auxiliary heating, exterior sound generator
Fuse panel 4 (brown)
1 Seat ventilation, seat electronics, interior mirror, A/C control console (rear), diagnostic connection, traffic information aerial (TMC)
2 Control unit for vehicle electrical system, diagnostic interface
3 Engine sound control unit
4 Gear oil cooling valve
5 Power unit start, electric drive system
7 Active accelerator
8 Night vision assist, active roll stabilisation
9 Adaptive cruise assist, front radar sensors
10 External sound generator
11 Intersection assist, driver assist systems
13 Left headlight
15 USB connection
Fuse panel 5 (red)
1 Anti-theft alarm system
2 Drive system control unit
3 Seat electronics (front), lumbar support
4 Selector lever for automatic gearbox
5 Horn
6 Parking brake
7 Diagnostic interface
8 Roof electronics control unit
9 Electronic toll collection system (ETC)
10 Airbag control unit
11 Electronic stabilisation control (ESC), anti-lock brake system (ABS)
12 Diagnostic connection, light sensor/rain sensor
13 Air conditioner
14 Door control unit, front right
15 Air conditioner compressor
16 Brake system pressure accumulator

 

Luggage compartment

Fuse box diagram

Audi Q8 (2018 - 2022) - fuse and relay box diagram - footwell compartment
Audi Q8 (2023 – 2025) – fuse and relay box diagram – footwell compartment

 

Assignment of the  relays in the luggage compartment

Description
Fuse panel 1 (black)
1 High-voltage heater, thermal management
5 Air suspension/suspension control
6 Automatic gearbox control unit
7 Seat heating (rear), A/C control console (rear)
9 Central locking system, rear light (left-side)
10 Front belt tensioner (driver’s side)
11 Central locking for boot lid, fuel tank flap, luggage compartment cover
12 Boot lid control unit
Fuse panel 2 (red)
1 Air conditioner blowers (rear)
2 Sound system
3 Emission control, engine sound control unit
4 A/C control console (rear)
5 Towing bracket (right lights)
6 Towing bracket swivel motor
7 Towing bracket release
8 Towing bracket (left lights)
9 Electrical socket for towing bracket
10 Four-wheel sport differential
11 Emission control
12 Rear belt tensioner (driver’s side)
Fuse panel 3 (brown)
1 Control unit for driver assist systems
3 Lumbar support (right-side)
4 Side assist
6 Tyre pressure loss indicator
7 External aerial
8 Remote control receiver (auxiliary heater), fuel tank module
10 TV tuner, control unit for data exchange and telematics
11 Control unit for convenience access and start authorisation
12 Garage door opener
13 Reversing camera, surround view cameras
14 Convenience system control unit, rear light (right-side)
15 Rear belt tensioner (passenger’s side)
16 Front belt tensioner (passenger’s side)
Fuse panel 4 (red)
1 Active roll stabilisation
2 Emergency cut-out connection for high-voltage battery
3 Coolant pump for high-voltage battery
4 Power electronics control unit
5 Brake servo
6 Voltage transformer
7 Engine start
8 Air conditioner compressor
9 Control unit for additional battery
10 High-voltage battery
11 Charging system
12 Remote control receiver for auxiliary heater/air conditioning
14 Thermal management, coolant pumps
15 Thermal management control unit
Fuse panel 5 (brown)
7 Seat heating (front)
9 Emission control
10 Seat heating (rear), A/C control console (rear)
12 Emission control

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi Q8 (2018 – 2022) – fuse and relay box diagram

Audi Q8 (2018 – 2022) – fuse and relay box diagram

 

This article covers to the Audi Q8 (B3), produced from 2018 to present. It includes fuse box diagrams for the 2018, 2019, 2020, 2021 and 2022 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

 

Year of production: 2018, 2019, 2020, 2021, 2022

 

Passenger compartment

Fuse box diagram (dashboard)

Audi Q8 (2018 - 2022) - fuse and relay box diagram - passenger compartment (dashboard)
Audi Q8 (2018 – 2022) – fuse and relay box diagram – passenger compartment (dashboard)

 

Assignment of the  relays in the passenger compartment (dashboard)

Description
A2 Audi phone box, roof antenna
A3 2019: Climate control system, fragrance system, ionizer;
2020: Climate control system, fragrance system, particulate matter sensor
2021-2022: Climate control system, fragrance system
A4 Head-up display
A5 Audi music interface, USB sockets
A7 Steering column lock
A8 Upper/lower display
A9 Instrument cluster
A10 CD/DVD player
A11 Light switch, switch panels
A12 Steering column electronics
A13 Volume control
A14 MMI Infotainment system control module
A15 Steering column adjustment
A16 Steering wheel heating

 

Fuse box diagram (Footwell)

Version 1
Audi Q8 (2018 - 2022) - fuse and relay box diagram - passenger compartment (footwell)
Audi Q8 (2018 – 2022) – fuse and relay box diagram – passenger compartment (footwell)

 

Version 2 (RHD)
Audi Q8 (2018 - 2022) - fuse and relay box diagram - passenger compartment (footwell - RHD)
Audi Q8 (2018 – 2022) – fuse and relay box diagram – passenger compartment (footwell – RHD)

 

Assignment of the  relays in the passenger compartment (footwell)

Description
Fuse panel A (brown)
A1 2019: Not Used;
2020-2021: Catalytic converter heating
2022: Catalytic converter heating, camshaft adjustment
A2 2019-2021: Engine components
2022: Mass airflow sensor, heated oxygen sensors
A3 2019-2021: Engine components
2022: Motor heating, fuel injectors, exhaust doors
A4 2019-2021: Engine components
2022: Hot water pump, exhaust doors, NOX sensor, particulate sensor, biodiesel sensor
A5 Brake light sensor
A6 2019-2021: Engine components
2022: Engine valves
A7 2019-2021: Engine components
2022: Heated oxygen sensor, mass airflow sensor
A8 2019-2021: Engine components
2022: High pressure pump, motor mount
A9 2019-2021: Engine components
2022: Motor components, motor relay
A10 Oil pressure sensor, oil temperature sensor
A11 2019: Engine Start;
2020-2021: Engine components
2022: 48 volt coolant pump, 48 volt starter generator, 12 volt starter generator
A12 2019-2021: Engine components
2022: Engine valves
A13 Engine cooling
A14 Engine control module
A15 2019-2021: Engine sensors
2022: Heated oxygen sensors
A16 Fuel pump
Fuse panel B (red)
B1 Ignition coils
B3 2019: Not Used;
2020-2022: High-voltage heating
B4 2019: Not Used;
2020-2022: Electric compressor
B5 Engine mount
B6 Windshield washer system control module
B7 Instrument panel
B8 Climate control system fresh air blower
B9 Driver assist systems control module
B10 Emergency call system
B11 2019-2021: Engine start
2022: Engine start, electric drive clutch
Fuse panel C (black)
C1 Front seat heating
C2 Windshield wipers
C3 Left headlight electronics
C4 Panoramic glass roof
C5 Left front door control module
C6 Sockets
C7 Right rear door control module
C9 Right headlight electronics
C10 Windshield washer system/headlight washer system
C11 Left rear door control module
C12 Parking heater
Fuse panel D (brown)
D1 2019-2020: 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)
D2 2019: Climate control module, gateway control module;
2020-2022: Vehicle electrical system control module, gateway control module
D3 Sound actuator/exhaust sound tuning
D4 2019: Transmission heating valve, Transmission fluid cooling valve;
2020-2022: Transmission fluid cooling valve
D5 2019-2021: Engine start
2022: Engine start, electric drive
D8 2019: Night vision assist;
2020-2022: Night vision assist, active roll stabilization
D9 2019-2020: Adaptive cruise assist, front radar
2021-2022: Adaptive cruise assist, front wheel sensors
D10 2019: Not Used;
2020-2022: Exterior sound
D11 Intersection assistant, driver assist systems
D13 Left headlight
D15 2021-2022: USB input
Fuse panel E (red)
E1 Anti-theft alarm system
E2 Engine control module
E3 Front seat electronics, lumbar support
E4 Automatic transmission selector lever
E5 Horn
E6 Parking brake
E7 Gateway control module (diagnosis)
E8 2019: Interior headliner lights;
2020-2022: Roof electronics control module
E9 2019: Not Used;
2020-2022: Drivetrain generator
E10 Airbag control module
E11 2019: Electronic Stabilization Control (ESC);
2020-2022: Electronic Stabilization Control (ESC), Anti-Lock Braking System (ABS)
E12 Diagnostic connector, light/rain sensor
E13 Climate control system
E14 Right front door control module
E15 2019: Climate control system, body electronics;
2020-2022: Climate control system compressor
E16 2022: Brake system pressure reservoir

 

Luggage compartment

Fuse box diagram

Audi Q8 (2018 - 2022) - fuse and relay box diagram - footwell compartment
Audi Q8 (2018 – 2022) – fuse and relay box diagram – footwell compartment

 

Assignment of the  relays in the luggage compartment

Description
Fuse panel A (black)
A1 2019: Not Used;
2020-2021: High-voltage heating, thermomanagement
A5 Air suspension/damping
A6 Automatic transmission
A7 2019: Rear seat heating;
2020-2021: Rear seat heating, control panel for rear climate control
A9 Central locking, left tail light
A10 Front belt tensioner on driver’s side
A11 2019: Central locking, rear blind;
2020-2021: Luggage compartment lid central locking, fuel filler door, luggage compartment cover
A12 Luggage compartment lid control module
Fuse panel B (red)
B1 Rear climate control system blower
B2 Sound-amplifier
B3 Exhaust treatment, sound actuator
B4 Rear climate control system control panel
B5 Right trailer hitch light
B6 Trailer hitch positioning motor
B7 Trailer hitch release
B8 Left trailer hitch light
B9 Trailer hitch socket
B10 All wheel drive sport differential
B11 Exhaust treatment
B12 Driver’s side rear safety belt tensioner
Fuse panel C (brown)
C1 Driver assist systems control module
C2 Audi phone box
C3 2019: Right front lumbar support;
2020-2021: Front seat electronics, right lumbar support
2022: Right lumbar support
C4 Side assist
C6 Tire pressure monitoring system
C7 2021-2022: Exterior antenna
C8 2019: Fuel tank monitoring;
2020-2022: Parking heater radio receiver, fuel tank monitoring
C10 2019: TV tuner;
2020-2022: TV tuner, data exchange and telematics control module
C11 Convenience access and start authorization control module
C12 Garage door opener
C13 Rearview camera, peripheral cameras
C14 2019: Central locking, tail lights;
2020: Right tail light, comfort system
2021-2022: Convenience system control module, right tail light
C15 Passenger’s side rear safety belt tensioner
C16 Front belt tensioner on front passenger’s side
Fuse panel D (red)
D1 2020-2022: Active roll stabilization
D2 2022: High-voltage battery
D3 2022: High-voltage battery coolant pump
D4 2022: Power electronics control module
D5 2019: Brake system
2022: Brake booster
D6 Voltage converter
D7 2022: Engine start
D8 2022: Climate control system compressor
D9 Auxiliary battery control module
D10 2022: High-voltage battery
D11 2022: Charging system
D12 2022: Auxiliary heating and air conditioning radio receiver
D14 2022: Thermal management, coolant pumps
D15 2020-2022: Thermomanagement control module
Fuse panel E (brown)
E7 2019: Front seat heating;
2022: Front seat heating
E9 2019: Exhaust treatment;
2022: Exhaust treatment
E10 2022: Rear seat heating, rear climate control system controls
E12 2019: Exhaust treatment;
2022: Exhaust treatment

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi e-tron GT (2021 – 2025) – fuse and relay box diagram – US version

Audi e-tron GT (2021 – 2025) – fuse and relay box diagram – US version

Year of production: 2021, 2022, 2023, 2024, 2025

 

The Audi e-tron GT, a battery-electric executive car, has been in production since 2020. In this article, you’ll find fuse box diagrams for the 2021, 2022, 2023, 2024 and 2025 models. You’ll also learn where the fuse panels are located within the vehicle and find detailed information on the fuse assignments (fuse layout).

 

Passenger compartment

Fuse box location

The fuses are located in the left and right footwells, as well as at the left and right front sides of the cockpit.

Left footwell fuse panel

Fuse Box Diagrams

Audi e-tron GT (2021 - 2025) - fuses and relay box diagram - passenger compartment (left footwell)
Audi e-tron GT (2021 – 2025) – fuses and relay box diagram – passenger compartment (left footwell)

 

Assignment of the fuses in the left footwell

Equipment
Fuse panel 1 (brown)
1 Heating circuit coolant pump
3 Thermal management
5 Vehicle electrical system control module
6 Vehicle electrical system control module
7 Light/rain/humidity sensor
8 Remote controlled parking
9 Roof electronics control module
10 Vehicle electrical system control module
12 Data exchange and telematics control module
Fuse panel 2 (red)
1 Driver assistance systems control module
2 Left rear door control module
3 Thermal management
4 Windshield wipers
5 Electronic Stabilization Control (ESC)
7 Left front safety belt
8 Vehicle electrical system control module
9 Vehicle electrical system control module
10 Left headlight
11 Left front door control module
12 Vehicle electrical system control module
Fuse panel 3 (white)
3 Vehicle electrical system control module
4 Diagnostic connection
6 Left front intersection assistant
7 Brake system pressure reservoir
8 Rearview mirror
9 Data exchange and telematics control module
10 Power supply
11 Power supply

 

Right footwell fuse panel

Fuse Box Diagrams

Audi e-tron GT (2021 - 2025) - fuses and relay box diagram - passenger compartment (right footwell)
Audi e-tron GT (2021 – 2025) – fuses and relay box diagram – passenger compartment (right footwell)

 

Assignment of the fuses in the right footwell

Equipment
Fuse panel 4 (brown)
1 Vehicle electrical system control module
3 Vehicle electrical system control module
4 Windshield wipers
5 Vehicle electrical system control module
6 Right rear door control module
7 Driver assistance systems control module
8 Right front door control module
9 Airbag control module
10 Right front safety belt
11 Remote controlled parking
12 Vehicle electrical system control module
Fuse panel 5 (red)
1 Diagnostic interface
3 Thermal management
4 Right headlight
5 Vehicle electrical system control module
6 Vehicle electrical system control module
7 Night vision assist control module
8 Driver assistance systems front camera
9 Rear climate control system control panel
11 Right front intersection assistant
Fuse panel 6 (white)
1 Diagnostic connection
2 Diagnostic interface
3 Brake system pressure reservoir
4 Vehicle electrical system control module
5 Front power electronics control module
6 Ionizer
7 Power supply
8 Power supply
9 Voltage converter
10 Power steering
12 Adaptive cruise assist

 

Left cockpit fuse panel

Fuse Box Diagrams

Audi e-tron GT (2021 - 2025) - fuses and relay box diagram - passenger compartment (left cocpit)
Audi e-tron GT (2021 – 2025) – fuses and relay box diagram – passenger compartment (left cocpit)

 

Assignment of the fuses in the left cockpit

Equipment
Fuse panel 1 (black)
1 Front climate control system control panel
2 Light switch
3 Climate control system control module
4 Head-up display control module
5 Steering column electronics
6 Steering column adjustment
8 Instrument cluster
11 Rear climate control system control panel
12 Steering column electronics, steering wheel heating

 

Right cockpit fuse panel

Fuse Box Diagrams

Audi e-tron GT (2021 - 2025) - fuses and relay box diagram - passenger compartment (right cocpit)
Audi e-tron GT (2021 – 2025) – fuses and relay box diagram – passenger compartment (right cocpit)

 

Assignment of the fuses in the right cockpit

Equipment
Fuse panel 2 (brown)
1 Audi phone box
2 Infotainment system
3 Center display, volume control
4 Audi connect apps control module
5 Audi music interface
6 Climate control system blower
8 Selector lever positions
12 Diagnostic connection

 

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi Q4 e-tron (2022 – 2024) – fuse and relay box diagram

Audi Q4 e-tron (2022 – 2024) – fuse and relay box diagram

 

Year of production: 2022, 2023, 2024

 

The Audi Q4 e-tron, a battery-electric compact luxury crossover, has been available since 2022. In this article, you will find fuse box diagrams for the 2022, 2023 and 2024 Audi Q4 e-tron, along with information on the locations of the fuse panels within the vehicle and details about the function of each fuse (fuse layout) and relay.

 

Passenger compartment

Fuse Box Location

The fuses are located on the left side of the cockpit, behind a cover.(1- LHD, 2-RHD)

Audi Q4 e-tron (2022 - 2024) - fuse and relay location - passenger compartment
Audi Q4 e-tron (2022 – 2024) – fuse and relay location – passenger compartment

 

Fuse Box Diagram (-SC-)

Audi Q4 e-tron (2022 - 2024) - fuse and relay diagram - passenger compartment
Audi Q4 e-tron (2022 – 2024) – fuse and relay diagram – passenger compartment

 

Assignment of the fuses and relays in the instrument panel (holder C)

Amps Function/Component
SC1
SC2 7.5A Airbag Control Module
SC3 25A Towing Recognition Control Module
SC4 7.5A Driver assistance systems front camera
SC5 25A Vehicle Electrical System Control Module
Left Taillight
SC6 30A Vehicle Electrical System Control Module
Interior Lighting
SC7 30A Heating and Air Conditioning Control Module
Seat Heating
SC8 30A Roof System Control Module
SC9 30A Driver’s Door Control Module (LHD)
Front Passenger’s Door Control Module (RHD)
Rear Door Control Module, Driver’s Side (LHD)
Rear Front Passenger’s Door Control Module (RHD)
SC10 Left/center Tail Light
SC11 15A Towing Recognition Control Module
SC12
SC13 40A Vehicle Electrical System Control Module
Central Locking
Windshield Washer System
SC14 40A Digital Sound System Control Module
SC15
SC16 Power Supply for Measuring Lead Set
SC17 5A Parking Aid Control Module
Lane Change Assistance Control Module
Lane Change Assistance Control Module 2
Toll registration sensor (from 07.2022)
Exterior Mirrors
SC18 5A Power rear lid opener sensor
Access/start authorization control module
Electronic Steering Column Lock Control Module
Rear lid opener control module
Burglary Protection Control Module 2
Burglary Protection Control Module 3
Burglary Protection Control Module 4
Burglary Protection Control Module 5
Engine Sound Generator Module 2
SC19 5A Control module for emergency call module and communication unit
Instrument Cluster
SC20 7.5A TV Tuner (from 11.2021)
Amplifier for Telephone
USB Connection 1
Chip Card Reader Control Module (from 11.2021, Japan)
Mobile Device Charger 1
Android Operating System Control Module (through 07.2022)
SC21 7.5A Rear Peripheral Camera
Peripheral Camera Control Module
Luggage Compartment Lid Release
SC22 15A Engine Control Module (ECM)
SC23 5A Internet access control module (through 07.2022)
SC24 Right/center Tail Light
SC25 25A Left Front Seat Belt
SC26 30A Driver’s Door Control Module (RHD)
Front Passenger’s Door Control Module (LHD)
Rear Door Control Module, Driver’s Side (RHD)
Rear Front Passenger’s Door Control Module (LHD)
SC27 25A Right Front Seat Belt
SC28 10A High voltage battery 1
High Voltage System Maintenance Connector
SC29 15A Towing Recognition Control Module
SC30 20A Control Module for Information Electronics 1
Infotainment System
SC31 25A Towing Recognition Control Module
SC32 25A Vehicle Electrical System Control Module
Right Tail Light
SC33
SC34 15A Heating and Air Conditioning Control Module
SC35
SC36 40A Fresh Air Blower Control Module
SC37 30A Rear Lid Control Module
SC38
SC39 10A Steering Column Electronic Systems Control Module
SC40 10A Alarm Horn
SC41 5A Data Bus On Board Diagnostic Interface
SC42 7.5A Garage Door Opener Control Module
Selector Lever
SC43 7.5A Front A/C display control head
Vehicle Interior Carbon Dioxide Concentration Sensor
Vehicle Interior Temperature Sensor
Rear window defogger relay
SC44 7.5A Control unit 1 for driving and convenience functions
lllumination Control Head
Rain/Light Recognition Sensor
Anti-Theft Alarm System Sensor
Diagnostic connection
Rear Interior Lamp
Front roof module
SC45 5A Steering Column Electronic Systems Control Module
SC46 7.5A Front Information Display Control Head
Driver Volume Control
Windshield Projection Head Up Display Control Module
SC47 10A Electronic Damping Control Module
SC48 7.5A USB Charging Socket 1
SC49
SC50
SC51
SC52 20A 12V Socket
12V Socket 2
12V Socket 3
SC53
SC54
SC55
SC56
SC57
SC58
SC59 7.5A Seat Occupied Recognition Control Module (US)
Sockets Relay
Automatic Day/Night Interior Mirror
SC60 10A Diagnostic connection
SC61 5A Electric Drive Power and Control Electronics
Electric Drive Power and Control Electronics 2
SC62
SC63
SC64
SC65
SC66 15A Rear Window Wiper Motor
SC67 10A Rear Window Defogger
A 30A US: Electric trailer brake position sensor
A 15A Revolving roof lamp and siren control module
Driving School Operation Relay
Driving Assistance Control Unit Control Module
Mobile two-way radio charging socket
Mobile two-way radio charging socket 2
B 10A Special Signals Control Head
Driving Assistance Control Unit Control Module
C 15A LHD:
Driver’s Seat Adjustment Control Head
Memory Seat/Steering Column Adjustment Control Module
Driver seat switch module

RHD:
Driver’s Seat Adjustment Control Head
Memory Seat/Steering Column Adjustment Control Module
Driver seat switch module

D 15A LHD:
Front Passenger’s Seat Adjustment Control Head
Front passenger seat switch module

RHD:
Driver’s Seat Adjustment Control Head
Memory Seat/Steering Column Adjustment Control Module
Driver seat switch module

R1 Sockets Relay
R2 Terminal 15 power supply relay
R3 Rear window defogger relay

 

Engine Compartment Fuse Box

Fuse Box Location

Audi Q4 e-tron (2022 - 2024) - fuse and relay location - engine compartment
Audi Q4 e-tron (2022 – 2024) – fuse and relay location – engine compartment

 

Fuse Box Diagram (-SB-)

Audi Q4 e-tron (2022 - 2024) - fuse and relay diagram - engine compartment (holder B)
Audi Q4 e-tron (2022 – 2024) – fuse and relay diagram – engine compartment (holder B)

 

Assignment of the fuses in the engine compartment (holder B)

Amps Function/Component
SB1
SB2 7.5A ABS Control Module
ESC Control Module
Electromechanical Steering
Main Relay
SB3 10A Voltage Converter
High voltage battery charger 1
Electric Drive Power and Control Electronics
Electric Drive Power and Control Electronics 2
SB4 30A Front Left Headlamp
SB5 30A Front Right Headlamp
SB6 7.5A Distance Regulation Control Module
SB7
SB8
SB9 15A Horn Relay
SB10 30A Wiper Motor Control Module
SB11 7.5A A/C Relay
Air Quality Sensor
Ionizer
SB12 7.5A Engine Sound Generator Module 1
SB13 25A ABS Control Module
ESC Control Module
SB14
SB15 40A ABS Control Module
ESC Control Module
SB16 50A Radiator Fan
SB17 30A/40A Through 11.2021; from 07.2022: Windshield Defogger
SB18 30A 11.2021-07.2022: Windshield Defogger
SB19
SB20
SB21
SB22
SB23 10A Engine Control Module (ECM)
SB24 5A Radiator Fan
SB25 10A/15A High voltage battery coolant pump
Heating Element (PTC) 3
SB26 10A/15A Low Temperature Circuit Coolant Pump
Radiator Blind Adjustment Motor
SB27
SB28
SB29
SB30
SB31
SB32 50A Brake booster
R1 Main Relay
R2 Windshield Heater Relay
R3 Horn Relay
R4
R5
R6 A/C Relay

 

Fuse Panel A (-SA-)
Audi Q4 e-tron (2022 - 2024) - fuse and relay diagram - engine compartment (holder A)
Audi Q4 e-tron (2022 – 2024) – fuse and relay diagram – engine compartment (holder A)

 

Assignment of the fuses in the engine compartment (holder A)

Amps Function/Component
508 Battery
SA1 350A Voltage Converter
SA2 80A Battery Monitoring Control Module
Power Steering Control Module
SA3 100A Fuse Panel C -SC-
SA4 100A Fuse Panel C -SC-
SA5
SA6 125A Fuse Panel B -SB-

 

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi 100 (C4; 1992 – 1994) – fuse and relay box diagram

Audi 100 (C4; 1992 – 1994) – fuse box diagram

Year of production: 1992, 1993, 1994

 

This article covers the second-generation   Audi 100 (C4), produced from 1990 to 1994. It includes fuse box diagrams for the 1992, 1993 and 1994 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

Passenger compartment

Fuse box diagram

Audi 100 (C4; 1992 - 1994) - fuse and relay box diagram - passenger compartment (instrument panel)
Audi 100 (C4; 1992 – 1994) – fuse and relay box diagram – passenger compartment (instrument panel)

 

Assignment of the fuses in the passenger compartment (instrument panel)


  A
Description
1 15 Rear fog lights
2 15 Emergency flash switch, anti-theft system (USA only)
3 25 Horns, brake lights switch
4 15 Luggage compartment, light, cigar lighter, interior lights
5 30 Not used
6 5 Tail lights, side marker light, RF
7 5 Tail lights, side marker light, LF
8 10 Headlight, hi-beam, right
9 10 Headlight, hi beam, left
10 10 Headlight, lo beam, right
11 10 Headlight, lo beam, left
12 15 Automatic transmission, backup lights, interior lights
13 15 Fuel pump
14 5 License plate lights, glove compartment light, engine compartment light, center console
15 25 Wipers/washer
16 30 Rear defogger
17 30 Fresh air fan, air conditioning
18 5 Power mirror switch
19 10 Central locking system, anti-theft system (USA only)
20 30 Heated seats
21 25 Fuel injection control unit, diagnostic
22 Open
23 Open
24 Open
25 Open
26 5 Speedometer, power mirrors
27 10 Ignition control unit
28 15 Fuel injection control unit, electronic engine cintrol
29 Open
30 5 Automatic transmission

 

Description
1 Rear fog light jumper plug
2 Rad. cooling fan relay 2nd stage
3 Rad. cooling fan relay after run control unit
4 Open
5 Load reduction relay
6 Open
7 Horn relay
8 Automatic transmission/anti-theft relay
9 Wash/wiper intermit, relay
10 Fuel pump relay, J17
11 Open

Fuse box diagram

Audi 100 (C4; 1992 - 1994) - fuse and relay box diagram - passenger compartment (instrument panel)
Audi 100 (C4; 1992 – 1994) – fuse and relay box diagram – passenger compartment (instrument panel)

 

Assignment of the  fuses in the passenger compartment (instrument panel)


Description Color
A Air conditioning connector Gray
B Right front wiring harness connector Black
C Instrument panel connector Blue
D Left front wiring harness connector Green
E Left front wiring harness connector Yellow
F Instrument panel connector Brown
G Instrument panel connector Red
H Rear wiring harness connector Black
I Instrument panel connector Red
J Instrument panel connector Yellow
K
L Single connector (terminal 30) connector Colorless
M For optional equipment connector Colorless
N
O
P To fuse 26

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi 200 (C3; 1983 – 1991) – fuse and relay box diagram

Audi 200 (C3; 1983 – 1991) – fuse and relay box diagram

Year of production: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991

 

This article covers the second-generation Audi 200 (C3), produced from 1983 to 1991. It includes fuse box diagrams for the 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990 and 1991 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

 

Fuses box diagram

Audi 200 (C3; 1983 - 1991) - fuse and relay box diagram
Audi 200 (C3; 1983 – 1991) – fuse and relay box diagram

 

Assignment of the fuses in the fuse box


  A
Description
1 15 Fog lights, rear fog lights
2 15 Emergency flashers
3 25 Horn, brake lights
4 15 Reading lights, luggage compartment, cigar lighter, interior lights, make-up mirror, Board Computer
5 30 Not used
6 5 Side marker, park lights, right
7 5 Side marker, park lights, left
8 10 Hi-beam headlight, hi-beam indicator light
9 10 Hi-beam headlight, left
10 10 Low beam, headlight, right
11 10 Low beam, headlight, left
12 15 Instrument cluster, back-up lights, cruise control, electronic thermoswitch
13 15 Fuel pump
14 5 Glove compartment, engine compartment, license plate lights
15 25 Windshield wipers
16 30 Rear window heat element, outside mirror heat element
17 30 Fresh air blower
18 5 Rear wiper (wagon)
19 10 Central locking system and fuel injection control unit 100, 100 Quattro
20 30 Heated seats with Memory Seat
21 25 Not used
22 Not used
23 30 Not used
24 10 Not used
25 30 Power seats with memory, passenger power seat
26 5 Auto-Check, power mirrors, driver’s seat memory control
27 10 Ignition control unit 100, 100 Quattro
28 15 Fuel injection control unit II
29 Spare fuses

 

Relay box diagram

Audi 200 (C3; 1983 - 1991) - fuse and relay box diagram (relay box)
Audi 200 (C3; 1983 – 1991) – fuse and relay box diagram (relay box)

 

Assignment of the relays in the relay box

Description
1 Open
2 Radiator cooling fan (stage 2)
3 100 models — radiator cooling fan after-run
200 models — radiator cooling fan (stage 1)
4 Not used
5 Load reduction relay
6 Not used
7 Horn
8 Anti-theft relay
9 Intermittent washer/wiper
10 Fuel pump
11 A/C relay

Auxiliary relay panel

Audi 200 (C3; 1983 - 1991) - fuse and relay box diagram (auxiliary relay panel)
Audi 200 (C3; 1983 – 1991) – fuse and relay box diagram (auxiliary relay panel)

 

Assignment of the relay in the auxiliary relay box


Description
1 Open
2 Seat belt/park light radio warning control unit
3 Interior light delay control unit
4 Open
5 Lamp control unit, front
6 Open
7 Rad coolant fan relay 3rd stage
8 ABS combination relay
9 Intensive washer relay
10 Power window control unit
11 Power window control unit
12 Rear window wiperwasher relay
13 Open
14 Circuit breaker for windows
15 Driver heated seat relay
16 Passenger heated seat relay
17 Open

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi 100 (C3; 1983 – 1991) – fuse and relay box diagram

Audi 100 (C3; 1983 – 1991) – fuse and relay box diagram

Year of production: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991

 

This article covers the second-generation  Audi 100 (c3), produced from 1983 to 1991. It includes fuse box diagrams for the 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990 and 1991 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

 

Fuses box diagram

Audi 100 (C3; 1983 - 1991) - fuse and relay box diagram
Audi 100 (C3; 1983 – 1991) – fuse and relay box diagram

 

Assignment of the  fuses in the fuse box


  A
Description
1 15 Fog lights, rear fog lights
2 15 Emergency flashers
3 25 Horn, brake lights
4 15 Reading lights, luggage compartment, cigar lighter, interior lights, make-up mirror, Board Computer
5 30 Not used
6 5 Side marker, park lights, right
7 5 Side marker, park lights, left
8 10 Hi-beam headlight, hi-beam indicator light
9 10 Hi-beam headlight, left
10 10 Low beam, headlight, right
11 10 Low beam, headlight, left
12 15 Instrument cluster, back-up lights, cruise control, electronic thermoswitch
13 15 Fuel pump
14 5 Glove compartment, engine compartment, license plate lights
15 25 Windshield wipers
16 30 Rear window heat element, outside mirror heat element
17 30 Fresh air blower
18 5 Rear wiper (wagon)
19 10 Central locking system and fuel injection control unit 100, 100 Quattro
20 30 Heated seats with Memory Seat
21 25 Not used
22 Not used
23 30 Not used
24 10 Not used
25 30 Power seats with memory, passenger power seat
26 5 Auto-Check, power mirrors, driver’s seat memory control
27 10 Ignition control unit 100, 100 Quattro
28 15 Fuel injection control unit II
29 Spare fuses

 

Relay box diagram

Audi 100 (C3; 1983 - 1991) - fuse and relay box diagram (relay box)
Audi 100 (C3; 1983 – 1991) – fuse and relay box diagram (relay box)

 

Assignment of the  relays in the relay box

Description
1 Open
2 Radiator cooling fan (stage 2)
3 100 models — radiator cooling fan after-run
200 models — radiator cooling fan (stage 1)
4 Not used
5 Load reduction relay
6 Not used
7 Horn
8 Anti-theft relay
9 Intermittent washer/wiper
10 Fuel pump
11 A/C relay

Auxiliary relay panel

Audi 100 (C3; 1983 - 1991) - fuse and relay box diagram (auxiliary relay panel)
Audi 100 (C3; 1983 – 1991) – fuse and relay box diagram (auxiliary relay panel)

 

Assignment of the  relay in the auxiliary relay box


Description
1 Open
2 Seat belt/park light radio warning control unit
3 Interior light delay control unit
4 Open
5 Lamp control unit, front
6 Open
7 Rad coolant fan relay 3rd stage
8 ABS combination relay
9 Intensive washer relay
10 Power window control unit
11 Power window control unit
12 Rear window wiperwasher relay
13 Open
14 Circuit breaker for windows
15 Driver heated seat relay
16 Passenger heated seat relay
17 Open

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram

Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram

Year of production: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018

 

In this article, we take a look at the first-generation Audi A1 (8X), manufactured from 2010 to 2018. You will find fuse box diagrams for Audi A1 models from 2010 through 2018, learn where the fuse panels are located inside the vehicle, and discover the function of each fuse and relay (fuse layout).

 

Location

Audi A1 (8X; 2010 - 2018) - fuse and relay box location
Audi A1 (8X; 2010 – 2018) – fuse and relay box location

 

  1. Fuse holder D -SD-
  2. Fuse holder A -SA-
  3. Fuse holder C -SC-
  4. Relay/fuse holder F -SF-
  5. Fuse holder B -SB-, Fuse holder H -SH-
  6. Fuse holder B -SB-

Luggage compartment (Fuse holder A -SA-)

At battery positive terminal (for models with battery in luggage compartment only).

 

Fuse box diagram

Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - luggage compartment (holder A)
Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram – luggage compartment (holder A)

 

Assignment of the fuses in the luggage compartment (fuse holder A)

No. A Function/component
1 Vacant
2 110 Onboard supply
Engine component supply
3 Vacant

Engine comparmtnet (Fuse holder B -SB-)

 

Fuse box diagram (for models with battery in engine compartment)

Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - engine compartment (holder B)
Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram – engine compartment (holder B)

 

Fuse box diagram (for models with battery in luggage compartment)

Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - engine compartment (holder B)Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - engine compartment (holder B)
Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram – engine compartment (holder B)

 

Assignment of the fuses in the engine compartment

No. A Function/component
1 175 Alternator -C-
2 40 Low heat output relay -J359-
Heater element for auxiliary air heater -Z35-
3 110 1) Onboard supply1)
Engine component supply1)
4 80 Power steering control unit -J500-
5 50 2)
40 3)
Radiator fan thermal switch -F18-
Radiator fan control unit -J293-
6 50 Automatic glow period control unit -J179-
7 60 High heat output relay -J360-
Battery monitor control unit -J3671)
Auxiliary heater element -Z35-
1) for models with battery in engine compartment only
2) no longer fitted, phased out (model year 2011)
3) phased-in modification (model year 2011)

Engine comparment

Fuses in electronics box in fuse holder B -SB-/ Fuse holder H -SH-

Fuse box diagram

In electronics box, in left engine compartment.
For S1 version models only, from January 2014, For models from November 2014 only.

Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - engine compartment (holder B/holder H)
Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram – engine compartment (holder B/holder H)

 

Fuses in the electronics box

No. A Function/component
1 110 4)

5 5)

Onboard supply4)
Engine component supply4)
Radiator fan control unit -J293-5)
Radiator fan -V7-5)
2 250 Alternator -C-
Voltage regulator -C1-
3 Battery +
4 80 Power steering control unit -J500-
5 50 6) Automatic glow period control unit -J179-6)
Glow plug 1 -Q10-
Glow plug 2 -Q11-
Glow plug 3 -Q12-
Glow plug 4 -Q13-
6 50 7)

 8)
– 9)

Radiator fan control unit -J293-7)
Radiator fan -V7-7)
 7 125 Onboard supply8)
Engine component supply8)
4) for models with battery in engine compartment only, up to October 2014
5) for models from November 2014 only
6) for models with diesel engine only, from November 2014
7) for models up to October 2014
8) for models with battery in engine compartment only, from November 2014
9) Fuse 5 on fuse holder B -SB5- bridged, (see note)

Fuses in electronics box in fuse holder H -SH-

Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - engine compartment (holder B/holder H)
Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram – engine compartment (holder B/holder H)

 

Fuses in the electronics box

No. A Function/component
1 40 Heater element for auxiliary air heater -Z35-,
stage 1
2 30 Radiator fan control unit -J293-
Radiator fan -V7-
3 Vacant
4 40 Heater element for auxiliary air heater -Z35-,
stage 2
5 40 Heater element for auxiliary air heater -Z35-,
stage 3
6 30 Mechatronic unit for dual clutch gearbox -J743-
7 7.5 Engine control unit -J623-
8 20 Wiper motor switch-over relay 1 -J368-
Wiper motor switch-over relay 2 -J369-
9 5 Battery monitor control unit -J367-
10 10 Suppression filter -C24-
11 Vacant
12 10 12)
15 13)10)11)
Lambda probe heater -Z19-
Lambda probe 1 heater after catalytic converter -Z29-
13 5 Brake light switch -F-
Clutch position sender -G476-
14 13)
10 10)11)12)
Thermal switch for air conditioning system shut-off -F163-
Fuel metering valve -N290-
Oil pressure regulation valve -N428-
Cylinder head coolant valve -N489-
Coolant circulation pump -V50-
Circulation pump -V55-
Charge air cooling pump -V188-
Auxiliary heating pump -V488-
15 5 Onboard supply control unit -J519-, T52c/34
Engine control unit -J623-, T91/67;T94/…
Voltage stabiliser -J532-, T12aa/4
16 30 Starter motor -B-
17 15 12)13)
30 10)11)
Engine control unit -J623-
18 5 10)11)
10 12)13)
Oil level and oil temperature sender -G266-
Fuel pump relay -J17-
Radiator fan control unit -J293-
Low heat output relay -J359-
High heat output relay -J360-
Charge pressure control solenoid valve -N75-
Recirculation valve for turbocharger -N249-
Intake manifold flap valve -N316-
Oil pressure regulation valve -N428-
Cooling oil valve -N471-
19 7.5 10)
10 11)13)
20 12)
Engine component current supply relay -J757-
Fuel pressure regulating valve -N276-
Fuel metering valve -N290-
Injector 2 for cylinder 1 -N532-
Injector 2 for cylinder 2 -N533-
Injector 2 for cylinder 3 -N534-
Injector 2 for cylinder 4 -N535-
Actuator 1 for camshaft adjustment -F366-
Actuator 2 for camshaft adjustment -F367-
Actuator 3 for camshaft adjustment -F368-
Actuator 4 for camshaft adjustment -F369-
Actuator 5 for camshaft adjustment -F370-
Actuator 6 for camshaft adjustment -F371-
Actuator 7 for camshaft adjustment -F372-
Actuator 8 for camshaft adjustment -F373-
Vacuum pump for brakes -V192-
20 5 10)11)
10 13)
20 12)
Automatic glow period control unit -J179-
Exhaust flap control unit -J883-
Crankcase breather heater element -N79-
Activated charcoal filter solenoid valve 1 -N80-
Camshaft control valve 1 -N205-
Exhaust camshaft control valve 1 -N318-
Continued coolant circulation pump -V51-
Sender 1 for secondary air pressure -G609-
Sender 2 for secondary air pressure -G610-
10) for models with 1.4 l diesel engine only
11) for models with 1.6 l diesel engine only
12) for models with 1.0 l/1.4 l petrol engine only
13) for models with 1.8 l/2.0 l petrol engine only

Passenger compartment

Fuse box diagram (Fuse holder C -SC-)

Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - passenger compartment (holder C)
Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram – passenger compartment (holder C)

 

Fuse Box in the driver’s side of the instrument panel

No. A Function/component
Black
1 30 Digital sound package control unit -J525-
Voltage stabiliser -J532-
Radio -R-
2 40 Heater control unit -J65-
X-contact relief relay -J59-
Fresh air blower control unit -J126-
Fresh air blower -V2-
3 20 Cigarette lighter -U1-
12 V socket -U5-
4 15 Trailer detector control unit -J345-
5 5 Data bus diagnostic interface -J533-
6 30 Front passenger door control unit -J387-
Rear right door control unit -J389-
7 30 Driver door control unit -J386-
Rear left door control unit -J388-
8 30 Heated rear window relay -J9-
Heated rear window -Z1-
9 25 ABS control unit -J104-
10 20 Onboard supply control unit -J519-
11 15 High tone horn -H2-
Low tone horn -H7-
Horn relay -J413-
12 30 Onboard supply control unit -J519-
Brown
1 5 Alarm horn -H12-
Anti-theft alarm sensor -G578-
2 19)16)
7.5 14)15)17)18)20)
Terminal 30 voltage supply relay -J317-22)
Motronic current supply relay -J271-21)
Engine control unit -J623-
3 5 Onboard supply control unit -J519-
4 5

15 23)

ABS control unit -J104-
Voltage stabiliser 2 -J570-
All-wheel drive control unit -J492-23)
5 Vacant
6 5 Light/rain sensor -G397-
Aerial amplifier for mobile telephone -R86-
Telephone bracket -R126-
Front roof module -WX3-
7 15 21)
20 22)
Fuel pump control unit -J538- 21)
Fuel pump relay -J17- 22)
8 10 21) Auxiliary coolant pump relay -J496-, up to October 2014
9 5 Steering column electronics control unit -J527-
10 5 Light switch -E1-
11 10 Climatronic control unit -J255-
Air conditioning system control unit -J301-
Front passenger door control unit -J387- (up to April 2012)
Rear right door control unit -J389- (up to April 2012)
16-pin connector -T16-, diagnosis connection
12 10 Driver door control unit -J386- (up to April 2012)
Rear left door control unit -J388- (up to April 2012)
13 10 Onboard supply control unit -J519-
14 20 Relay for power sockets -J807-, for models without trailer socket only
15 30 Onboard supply control unit -J519-
16 20 Wiper motor switch-over relay 1 -J368-, up to October 2014
Engine component current supply relay -J757-23)24)
Ignition coil 1 with output stage -N70-23)24)
Ignition coil 2 with output stage -N127-23)24)
Ignition coil 3 with output stage -N291-23)24)
Ignition coil 4 with output stage -N292-23)24)
Red
1 19)20)
20 15)16)17)
Automatic glow period control unit -J179-
Vacuum pump for brakes -V192-
2 10

34)

Brake light switch -F- (up to October 2011)
brake pedal switch -F63- (up to October 2011)
auxiliary coolant pump relay -J496-
Lambda probe heater -Z19- (up to October 2011)
Lambda probe 1 heater after catalytic converter -Z29-, (up to October 2011)
Supply Fuse 9 on fuse holder F -SF9-, (from November 2011, up to October 2014)
Supply Fuse 10 on fuse holder F -SF10- (from November 2011, up to October 2014)
ABS control unit -J104-, from November 2011
3 18)19)20)
7.5 16)
15 14)15)17)
Air mass meter -G70-, up to October 2014
Fuel pump relay -J17-, up to October 2014
Low heat output relay -J359-, up to October 2014
High heat output relay -J360-, up to October 2014
Engine component current supply relay -J757-, up to October 2014
Fuel pressure regulating valve -N276-, up to October 2014
Coolant circulation pump -V50-, up to October 2014
4 15 14)15)17)16)
25 18)
30 19)20)
Engine control unit -J623-
Clutch position sender -G476-, up to October 2011
Brake light switch -F-, up to October 2011
5 20 18)
15 19)20)
20 14)15)17)
30 16)
Ignition coil 1 with output stage -N70-, up to October 2014
Ignition coil 2 with output stage -N127-, up to October 2014
Ignition transformer -N152-, up to October 2014
Fuel pressure regulating valve -N276-, up to October 2014
Fuel metering valve -N290-, up to October 2014
Ignition coil 3 with output stage -N291-, up to October 2014
Ignition coil 4 with output stage -N292-, up to October 2014
6 10
20 16)
Radiator fan control unit -J293-, up to October 2014
Heater element relay -J925-, up to October 2014
Charge pressure control solenoid valve -N75-, up to October 2014
Activated charcoal filter solenoid valve 1 -N80-, up to October 2014
Exhaust camshaft control valve 1 -N205-, up to October 2014
Recirculation valve for turbocharger -N249-, up to October 2014
Intake manifold flap valve -N316-, up to October 2014
Exhaust camshaft control valve 1 -N318-, up to October 2014
Switchover valve for exhaust recirculation cooler -N345-, up to October 2014
Oil pressure regulation valve -N428-, up to October 2014
Intake cam adjuster for cylinder 2 -N583-, up to October 2014
Exhaust cam adjuster for cylinder 2 -N587-, up to October 2014
Intake cam adjuster for cylinder 3 -N591-, up to October 2014
Exhaust cam adjuster for cylinder 3 -N595-, up to October 2014
Pump for exhaust recirculation cooler -V400-
7 5 CD changer -R41-
8 5 Internet access control unit -J666-
Chip card reader control unit -J676-
Radio -R-
TV tuner -R78-
9 5 Control unit in dash panel insert -J285-
10 5 Relay for automatic anti-dazzle interior mirror -J910-
Automatic anti-dazzle interior mirror -Y7-
11 7.5 32)
15 33)
Radio -R-
Control unit for information electronics 1 -J794-
12 5 Display unit for front information display and operating unit control unit -J685-
14) for models with 1.2 l petrol engine only
15) for models with 1.4 l petrol engine (90 kW) only
16) for models with 1.4 l petrol engine (103 kW) only
17) for models with 1.4 l petrol engine (136 kW) only
18) for models with 2.0 l petrol engine only
19) for models with 1.6 l diesel engine only
20) for models with 2.0 l diesel engine only
21) for models with petrol engine only
22) for models with diesel engine only
23) for models with 2.0 l petrol engine, from January 2014
24) for models with 1.8 l petrol engine, from November 2014
32) for models with MMI only
33) for models without MMI only
34) from November 2011

Fuse box diagram (Fuse holder D -SD-)

Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - passenger compartment (holder D)
Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram – passenger compartment (holder D)

 

Fuse Box in the passenger’s side of the instrument panel

No. A Function/component
Black
1 7.5 ESL control unit -J764-
2 20 Trailer detector control unit -J345-
3 20 Trailer detector control unit -J345-
4 30
7.5
Mechatronic unit for dual clutch gearbox -J743-, up to October 2014
Electronically controlled damping control unit -J250-, from January 2014
5 30 Headlight washer system relay -J39-
Headlight washer system pump -V11-
6 5 Interface control unit for vehicle location system -J843-
7 7.5 Entry and start authorisation control unit -J518-
8 15 Mechatronic unit for dual clutch gearbox -J743-, up to October 2014
9 20 Sliding sunroof motor -V1-
10 7.5 Selector lever sensors control unit -J587-
11 15 35) Engine component current supply relay -J757-, up to October 2014
Fuel pressure regulating valve -N276- , up to October 2014
12 Vacant
Brown
1 5 Reversing light switch -F4-
Selector lever sensors control unit -J587-
Mechatronic unit for dual clutch gearbox -J743-
2 10 High-pressure sender -G65-
Oil level and oil temperature sender -G266-
Air conditioning system control unit -J301-
Relay for power sockets -J807-
Automatic anti-dazzle interior mirror -Y7-
16-pin connector -T16-, diagnosis connection
3 5 Data bus diagnostic interface -J533-
4 5 Heater control unit -J65-
Control unit for structure-borne sound -J869-
5 7.5 Light switch -E1-
Starter relay 1 -J906-
Voltage stabiliser -J532-
Starter relay 2 -J907-
Relay for automatic anti-dazzle interior mirror -J910-
Front left headlight -MX1-
Front right headlight -MX2-
6 5 Light switch -E1-
7 5 ABS control unit -J104-, up to October 2014
Voltage stabiliser 2 -J570-, up to October 2014
Electronically controlled damping control unit -J250-, from January 2014
8 5 Heated driver seat regulator -E94-
Heated front passenger seat regulator -E95-
Hazard warning lights button -E229-
Heated rear window button -E230-
TCS and ESP button -E256-
Parking aid button -E266-
Tyre pressure monitor display button -E492-
Start/Stop operation button -E693-
Trailer detector control unit -J345-
Left washer jet heater element -Z20-
Right washer jet heater element -Z21-
9 5 Power steering control unit -J500-
10 36)
7.5 37)
Air mass meter -G70-
Fuel pump control unit -J538-
Crankcase breather heater element -N79-
11 5 Airbag control unit -J234-
Front passenger airbag deactivated warning lamp -K145-
12 5 Parking aid control unit -J446-
13 5 Control unit for headlight range control -J431-
14 30 Seat heating control unit -J882-
15 15 Rear window wiper motor -V12-
16 5 Engine control unit -J623-
Air mass meter -G70-
Red
1 Vacant
2  – Vacant
3 10 All-wheel drive control unit -J492- , gradual phase-out
4 Vacant
5 Vacant
6 Vacant
7 Vacant
8 Vacant
9 Vacant
10 5
10
Special vehicle control unit -J608-
11 Vacant
12 Vacant
35) for models with 2.0 l petrol engine only
36) for models with petrol engine only
37) for models with diesel engine only

Fuse box diagram (relay/fuse holder F -SF-)

Audi A1 (8X; 2010 - 2018) - fuse and relay box diagram - passenger compartment (holder F)
Audi A1 (8X; 2010 – 2018) – fuse and relay box diagram – passenger compartment (holder F)

 

Fuse/Relay panel under the steering wheel

No. A Function/component
1 40 Voltage stabiliser -J532-
2 50 Supply
fuse carrier 1 -ST1- in fuse holder D -SD-
3 40 Terminal 15 voltage supply relay -J329-
4 40 ABS control unit -J104-
5 5 Voltage stabiliser 2 -J570-, gradual phase-out
6 5 Onboard supply control unit -J519-
Voltage stabiliser -J532-
Voltage stabiliser 2 -J570-, gradual phase-out
Engine control unit -J623-
16 10 Brake light switch -F- (from November 2011, up to October 2014)
Clutch position sender -G476- (from November 2011, up to November 2014)
17 5 Lambda probe heater -Z19- (from November 2011, up to October 2014)
Lambda probe 1 heater after catalytic converter -Z29- (from November 2011, up to November 2014)

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi 90 (B3; 1987 – 1991) – fuse and relay box diagram

Audi 90 (B3; 1987 – 1991) – fuse and relay box diagram

Year of production: 1987, 1988, 1989, 1990, 1991

 

This article covers  the Audi 90 (B3), produced from 1987 to 1991. It includes fuse box diagrams for the 1987, 1988, 1989, 1990 and 1991 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

 

Fuse box diagram

Audi 90 (B3; 1986 - 1991) - fuse and relay box diagram
Audi 90 (B3; 1987 – 1991) – fuse and relay box diagram

 

Assignment of the fuses in the fuse box

No.
Description
A
1 Fog lights, rear fog light 15
2 Emergency flashers 15
3 Horn, brake lights 25
4 Reading lights, luggage compartment, cigar lighter, interior lights, make-up mirror, Board Computer, radio, clock, auto climate control, alarm system 15
5 Radiator cooling fan 30
6 Side marker, park lights, right 5
7 Side marker, park lights, left 5
8 Hi-beam headlight, right, hi-beam indicator light 10
9 Hi-beam headlight, left 10
10 Low beam headlight, right 10
11 Low beam headlight, left 10
12 Instrument cluster, back-up lights, Auto-Check, cruise control, ABS, Board Computer, differential locks, electronic thermoswitch, throttle valve time control unit, radiator cooling fan after-run control unit 15
13 Fuel pump, warm-up regulator 15
14 Glove compartment, engine compartment, license plate lights 5
15 Windshield wipers, thermoswitch, radiator cooling fan, turn signals, A/C pressure switch 25
16 Rear window heat element, outside mirror heat element 30
17 Fresh air blower, A/C 30
18 Power mirrors, rear window wiper (Coupe) 5
19 Central locking system, heated lock system 10
20 Radiator cooling fan (step 1), radiator cool fan after-run 30
21 Diagnostic 10
21 Rear cigar lighter 25
22 Not used
23 Power seats with memory, power seat control unit 30
24 Engine control I 10
25 Heated seats 30
26 Daytime driving lights (Canada) 5
27 Engine control I (from September, 1987) 10
28 Engine control II 15
29 Spare fuses 15
Relay
I Fog lights, J5
II up to 1990: Radiator cooling tan (stage 2), J101
from 1990: Not used
III Radiator cooling fan after-run control unit, J138
IV up to 1990: Not used
from 1990: Headlight washer system, J39
V Load reduction relay, J18
VI up to 1990: A/C fresh air blower, J11
from 1990: Radiator cooling fan high speed relay, J101
VII Horn, J4
VIII Bridge between contact 36 and 38 for manual transmissions
Auto transmission, J60
IX Intermittent washer/wiper, J31
X Fuel pump, J17
XI Radiator cooling fan (stage 1), J26

Auxiliary relay panel

Audi 90 (B3; 1986 - 1991) - fuse and relay box diagram - auxiliary relay panel
Audi 90 (B3; 1987 – 1991) – fuse and relay box diagram – auxiliary relay panel

 

Assignment of the fuses in the auxiliary relay panel

No. Description
1 ABS system, J156
2 Seat belt, radio, parking light warning, J152
3 Interior light control unit, J140
4 A/C clutch control unit, J153
5 Not used
6 Dynamic oil pressure warning (without Auto-Check), J114
Lamp control unit, front (with Auto-Check), J123
7 Not used
8 Not used
9 Not used
10 Not used
11 Not used
12 Circuit breaker (power seats with memory, power windows, power sunroof), S43
13 Seat heater control unit, passenger. J132
14 Seat heater control unit, driver, J131
15 Sunroof relay, J139
Sunroof and power window control unit, J139
16 Sunroof and power window control unit, J139
17 Wire distributor adaptor, (optional equipment connector)
18 Not used

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Audi 80 (B3; 1986 – 1991) – fuse and relay box diagram

Audi 80 (B3; 1986 – 1991) – fuse and relay box diagram

Year of production: 1986, 1987, 1988, 1989, 1990, 1991

 

This article covers  the Audi 80 (B3), produced from 1986 to 1991. It includes fuse box diagrams for the 1986, 1987, 1988, 1989, 1990 and 1991 models, provides details on the location of the fuse panels inside the vehicle, and explains the function and layout of each fuse.

 

Fuse Box diagram

Audi 80 (B3; 1986 - 1991) - fuse and relay box diagram
Audi 80 (B3; 1986 – 1991) – fuse and relay box diagram

 

Assignment of the fuses in the fuse box

No.
Description
A
1 Fog lights, rear fog light 15
2 Emergency flashers 15
3 Horn, brake lights 25
4 Reading lights, luggage compartment, cigar lighter, interior lights, make-up mirror, Board Computer, radio, clock, auto climate control, alarm system 15
5 Radiator cooling fan 30
6 Side marker, park lights, right 5
7 Side marker, park lights, left 5
8 Hi-beam headlight, right, hi-beam indicator light 10
9 Hi-beam headlight, left 10
10 Low beam headlight, right 10
11 Low beam headlight, left 10
12 Instrument cluster, back-up lights, Auto-Check, cruise control, ABS, Board Computer, differential locks, electronic thermoswitch, throttle valve time control unit, radiator cooling fan after-run control unit 15
13 Fuel pump, warm-up regulator 15
14 Glove compartment, engine compartment, license plate lights 5
15 Windshield wipers, thermoswitch, radiator cooling fan, turn signals, A/C pressure switch 25
16 Rear window heat element, outside mirror heat element 30
17 Fresh air blower, A/C 30
18 Power mirrors, rear window wiper (Coupe) 5
19 Central locking system, heated lock system 10
20 Radiator cooling fan (step 1), radiator cool fan after-run 30
21 Diagnostic 10
21 Rear cigar lighter 25
22 Not used
23 Power seats with memory, power seat control unit 30
24 Engine control I 10
25 Heated seats 30
26 Daytime driving lights (Canada) 5
27 Engine control I (from September, 1987) 10
28 Engine control II 15
29 Spare fuses 15
Relay
I Fog lights, J5
II up to 1990: Radiator cooling tan (stage 2), J101
from 1990: Not used
III Radiator cooling fan after-run control unit, J138
IV up to 1990: Not used
from 1990: Headlight washer system, J39
V Load reduction relay, J18
VI up to 1990: A/C fresh air blower, J11
from 1990: Radiator cooling fan high speed relay, J101
VII Horn, J4
VIII Bridge between contact 36 and 38 for manual transmissions
Auto transmission, J60
IX Intermittent washer/wiper, J31
X Fuel pump, J17
XI Radiator cooling fan (stage 1), J26

Auxiliary relay panel

Audi 80 (B3; 1986 - 1991) - fuse and relay box diagram - auxiliary relay panel
Audi 80 (B3; 1986 – 1991) – fuse and relay box diagram – auxiliary relay panel

 

Assignment of the fuses in the auxiliary relay panel

No. Description
1 ABS system, J156
2 Seat belt, radio, parking light warning, J152
3 Interior light control unit, J140
4 A/C clutch control unit, J153
5 Not used
6 Dynamic oil pressure warning (without Auto-Check), J114
Lamp control unit, front (with Auto-Check), J123
7 Not used
8 Not used
9 Not used
10 Not used
11 Not used
12 Circuit breaker (power seats with memory, power windows, power sunroof), S43
13 Seat heater control unit, passenger. J132
14 Seat heater control unit, driver, J131
15 Sunroof relay, J139
Sunroof and power window control unit, J139
16 Sunroof and power window control unit, J139
17 Wire distributor adaptor, (optional equipment connector)
18 Not used

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.