Audi A8-S8 (D5-4N) (2017-2023) Fuse Box Location & Diagram

Welcome to our comprehensive fuse box guide for the fourth-generation Audi A8-S8 (D5-4N2/4N8), spanning from 2017 to the present. Whether you’re an owner, enthusiast, or simply curious about the inner workings of these luxury vehicles, we’ve got you covered. In this guide, we will provide you with detailed fuse box diagrams for the Audi A8 and S8 models of 2017, 2018, 2019, 2020, 2021, 2022 and 2023. Discover the precise locations of the fuse panels inside the car and gain a thorough understanding of the assignment of each fuse, including the fuse layout. Let’s delve into the intricate world of Audi’s fuse box configurations and unravel the mysteries beneath the hood.

Cockpit Fuse Panel

Fuse Box Location

Located on the left side of the cockpit, the fuse box offers a convenient and easily accessible placement. It remains discreetly hidden behind a protective cover.

Fuse Box Diagram

Outlined in the table below is the precise allocation of fuses positioned on the left side of the cockpit, specifically on the driver’s side. This arrangement provides a clear and concise overview of the fuse assignments, aiding in easy identification and troubleshooting.

No.Description
12017-2019: Climate control system;
2020-2023: Climate control system, interior air sensor
22017-2020: Phone, roof antenna
from 2021: Audi phone box
32017-2019: Climate control system, fragrance system, ionizer;
2020-2023: Climate control system, fragrance system, particulate matter sensor
4Head-up display
52017-2019: Audi music interface;
2020-2023: Audi music interface, USB sockets
6from 2021: Instrument panel
7Steering column lock
8Front MMI display
9Instrument cluster
10Volume control
11Light switch, switch panels
12Steering column electronics
14MMI Infotainment system control module
15Steering column adjustment
16Steering wheel heating

Footwell Fuse Panel

Fuse Box Location

The secondary fuse box can be found concealed behind the cover within the left footwell.

Fuse Box Diagram

The following table showcases the allocation of fuses hidden behind the cover in the left footwell.

No.Description
Brown fuse panel (A)
1Engine ignition coils
22017-2020: Engine start, Electric motor coupling
from 2021: Engine start, electric drive clutch
3Windshield wiper control module
4Left headlight electronics
5Climate control system blower
6Instrument panel
7Windshield wipers
8from 2021: High-voltage heating, compressor
9Panoramic glass roof
Black fuse panel (B)
1Engine mount
2Left rear door control module
3Windshield washer system/headlight washer system
4Right headlight electronics
5Front seat heating
6Right rear door control module
7Sockets
8Left front door control module
92017-2019: Not Used;
from 2020: Parking heater
Red fuse panel (C)
1Anti-theft alarm system
2Engine control module
5Horn
6Parking brake
7Gateway control module (diagnosis)
82017-2020: Interior headliner lights
from 2021: Roof electronics control module
9Driver assist systems control module
10Airbag control module
112017-2019: Electronic Stabilization Control (ESC);
from 2020: Electronic Stabilization Control (ESC), Anti-Lock Braking System (ABS)
122017-2019: Diagnostic connector, light/rain sensor;
from 2020: Rear climate control unit, diagnostic connector, light/rain sensor
13Climate control system
14Right front door control module
15Climate control system, body electronics
162017-2019: Not Used;
from 2020: Brake system
Black fuse panel (D)
1from 2021: Engine components
2Engine components
3Engine components
4Engine components
5Brake light sensor
6Engine components
7Engine components
8Engine components
9Engine components
10Oil pressure sensor, oil temperature sensor
112017-2020: Engine start
from 2021: Engine components
12Engine components
13Radiator fan
142017-2020: Engine control module
from 2021: Engine control module, fuel injectors
15Engine sensors
16Fuel pump

Luggage Compartment Fuse Panel

Fuse Box Location

Behind the side trim panel, you will find it situated on the left-hand side of the trunk.

Fuse Box Diagram

The following table showcases the allocation of fuses within the trunk.

No.Description
Black fuse panel (A)
12017-2019: Not Used;
from 2020: Thermal management
5Air suspension
6Automatic transmission
7Right rear seat adjustment
8Rear seat heating
92017-2020: Central locking, tail lights
from 2021: Left tail light
10Front belt tensioner on driver’s side
112017-2019: Central locking, rear blind;
2020: Central locking, rear blind, fuel filler door
from 2021: Luggage compartment lid central locking, fuel filler door, sunshade, luggage compartment cover
12Luggage compartment lid
Red fuse panel (B)
1Rear climate control system blower
2from 2021: Exterior antenna
32017-2019: Not Used;
from 2020: Exhaust treatment, sound actuator
4Rear climate control system control panel
5Right trailer hitch light
6Trailer hitch positioning motor
7Trailer hitch
8Left trailer hitch light
9Trailer hitch socket
10Sport differential
112017-2019: Not Used;
from 2020: Exhaust treatment
12from 2021: 48 V drivetrain generator
Brown fuse panel (C)
1Driver assist systems control module
2Rear Audi phone box
3Rear seat adjustment
4Side assist
5Rear Seat Entertainment (Audi tablet)
6Tire pressure monitoring system
7Emergency call system
82017-2019: Fuel tank monitoring;
from 2020: Parking heater radio receiver, fuel tank monitoring
9Automatic transmission selector lever
102017-2019: TV tuner;
from 2020: TV tuner, data exchange control module
112017-2020: Vehicle opening/start (NFC)
from 2021: Convenience access and start authorization control module
12Garage door opener
13Rearview camera, peripheral cameras
142017-2020: Central locking, tail lights
from 2021: Convenience system control module, right tail light
15Left rear seat adjustment
16Front belt tensioner on front passenger’s side
Black fuse panel (D)
12017-2019: Seat ventilation, seat heating, rearview mirror, climate control system, rear climate control system controls;
from 2020: Seat ventilation, rear seat heating, rear-view mirror, refrigerator, diagnostic connector
2Gateway control module (communication)
3Sound actuator
4Transmission heating valve
52017-2019: Engine start;
from 2020: Engine start, electric motor
72017-2019: Not Used;
from 2020: Active accelerator pedal
82017-2019: Night vision assist;
from 2020: Night vision assist, active suspension
9Adaptive cruise assist
112017-2020: Intersection assistant, driver assist systems
from 2021: Intersection assistant, driver assist systems, radar systems, camera systems
122017-2019: Not Used;
from 2020: Exterior sound
13from 2021: USB input
14Right headlight
15Left headlight
Red fuse panel (E)
12017-2019: Not Used;
from 2020: Active suspension
22017-2019: Not Used;
from 2020: Service disconnect switch
3Refrigerator
42017-2019: Not Used;
from 2020: Electric motor
5Brake system
62017-2019: Not Used;
from 2020: High-voltage battery water pump
72017-2019: Not Used;
2020: Interior climate control
from 2021: Auxiliary climate control
82017-2019: Not Used;
2020: A/C compressor
from 2021: Climate control system compressor
9Auxiliary battery control module
102017-2019: Not Used;
from 2020: High-voltage battery
112017-2019: Not Used;
from 2020: High-voltage battery
142017-2019: Not Used;
from 2020: Thermal management
152017-2019: Not Used;
from 2020: Thermal management
White fuse panel (F)
1Rear center armrest heating
2Rear sliding sunroof
3CD/DVD player
5AC socket
6Passenger’s side rear safety belt tensioner
7Front center armrest heating
8Rear footrest heating
11Rear Seat Remote
12Driver’s side rear safety belt tensioner

2 thoughts on “Audi A8-S8 (D5-4N) (2017-2023) Fuse Box Location & Diagram”

  1. my panoramic glass roof was not working for a week after few rainy days, and with help of your fuse diagram I finally found the probem, it was fuse nr9 which burned out

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