In this article, we consider the fifth-generation Audi A4 / S4 (B9/8W), produced from 2017 to the present. Here you will find fuse box diagrams of Audi A4 and S4 2017 and 2018, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout).
See other Audi A4/S4:
Fuse Layout Audi A4/S4 2017-2019…
Contents
Cigar lighter / power outlet fuse in the Audi A4/S4 is the fuse №6 (Black fuse panel C) in the Driver’s/front passenger’s footwell fuse box.
Table of Contents
Fuse Box Location
Fuse Box Location
Driver’s/front passenger’s footwell
Left-hand drive vehicles: It is located under the footrest.
Right-hand drive vehicles: Behind the cover under the glove box.
Driver’s side cockpit
Luggage compartment
It is located in the left side of the trunk behind the trim panel.
Fuse box diagrams
Fuse box diagrams
2017
Driver’s/front passenger’s footwell (LHD)
Front passenger‘s footwell (RHD)
Assignment of the fuses in the Passenger compartment (footwell) (2017)
| Number | Electric equipment |
|---|---|
| Brown panel A | |
| 1 | — |
| 2 | Mass airflow sensor, camshaft adjustment |
| 3 | Exhaust doors, fuel injectors, radiator inlet |
| 4 | Vacuum pump, hot water pump, particulate sensor, biodiesel sensor |
| 5 | Brake light sensor |
| 6 | Engine valves |
| 7 | Heated oxygen sensor, mass airflow sensor |
| 8 | Water pump, high pressure pump, high pressure regulator valve |
| 9 | Hot water pump |
| 10 | Oil pressure sensor, oil temperature sensor |
| 11 | Clutch pedal position sensor |
| 12 | Engine valves |
| 13 | Radiator fan |
| 14 | Fuel injectors |
| 15 | Ignition coils |
| 16 | Fuel pump |
| Red panel B | |
| 1 | Anti-theft alarm system |
| 2 | Engine control module |
| 3 | Lumbar support |
| 4 | Automatic transmission selector mechanism |
| 5 | Horn |
| 6 | Electromechan ical park ing brake |
| 7 | Gateway control module |
| 8 | Interior headl iner lights |
| 9 | — |
| 10 | Airbag control module |
| 11 | Electronic Stabilization Control (ESC |
| 12 | Diagnostic connector, light/rain sensor |
| 13 | Climate control system |
| 14 | Right front door control module |
| 15 | A/C compressor |
| Black panel C | |
| 1 | Front seat heating |
| 2 | Windshield wipers |
| 3 | Left head light electronics |
| 4 | Panorama glass roof/ sliding/tilting sunroof |
| 5 | Left front door control module |
| 6 | Sockets |
| 7 | Right rear door control module |
| 8 | — |
| 9 | Right headlight electronics |
| 10 | Windshield washer system/headlight washer system |
| 11 | Left rear door control module |
| Black panel D | |
| 1 | Seat ventilation, rearv iew mirror, rear climate control system controls |
| 2 | Gateway, climate control system |
| 3 | Sound actuator/exhaust sound tuning |
| 4 | Clutch pedal position sensor |
| 5 | Engine start |
| 6 | — |
| 7 | — |
| 8 | Homelink |
| 9 | Adaptive cruise control |
| 10 | — |
| 11 | Video camera |
| 12 | Matrix LED headlight/right LED headlight |
| 13 | Matrix LED headlight/left LED headlight |
| 14 | Rear window wiper |
| Red panel E | |
| 1 | Ignition coils |
| 2 | Natural gas tank valves |
| 3 | — |
| 4 | — |
| 5 | Engine mount |
| 6 | Automat ic transmission |
| 7 | Instrument panel |
| 8 | Climate control system (blower) |
| 9 | — |
| 10 | Dynamic steering |
| 11 | Engine start |
Driver’s side cockpit
Assignment of the fuses in the Driver’s side cockpit (2017)
| Number | Electric equipment |
|---|---|
| 1 | — |
| 2 | Telephone |
| 3 | — |
| 4 | Head-up display |
| 5 | Audi music interface |
| 6 | Front climate control system controls |
| 7 | Steering column lock |
| 8 | Infotainment syst em display |
| 9 | Instrument cluster |
| 10 | Infotainment unit |
| 11 | Light switch |
| 12 | Steering column electronics |
| 13 | — |
| 14 | Infotainment system |
| 15 | — |
| 16 | Steering wheel heating |
Left luggage compartment
Assignment of the fuses in the Left luggage compartment (2017)
| Number | Electric equipment |
|---|---|
| Black panel A | |
| 1 | — |
| 2 | Windshield defroster |
| 3 | Windshield defroster |
| 4 | — |
| 5 | Suspension control |
| 6 | Automatic transmission |
| 7 | Rear window defogger |
| 8 | Rear seat heating |
| 9 | Tail lights |
| 10 | Left safety belt tensioner |
| 11 | Central locking |
| 12 | Electric luggage compartment lid |
| Red panel B | |
| – | Not assigned |
| Brown panel C | |
| 1 | — |
| 2 | Telephone |
| 3 | Lumbar support |
| 4 | Audi side assist |
| 5 | — |
| 6 | — |
| 7 | — |
| 8 | — |
| 9 | — |
| 10 | — |
| 11 | — |
| 12 | Homelink |
| 13 | Rearview camera, peripheral cameras |
| 14 | Right tail lights |
| 15 | — |
| 16 | Right safety belt tensioner |
| Red panel E | |
| 1 | — |
| 2 | Sound-amplifier |
| 3 | AdBlue |
| 4 | — |
| 5 | Trailer hitch (right light) |
| 6 | — |
| 7 | Trailer hitch |
| 8 | Trailer hitch (left light) |
| 9 | Trailer hitch (socket) |
| 10 | Sport differential |
| 11 | Ad Blue |
2018
Driver’s/front passenger’s footwell (LHD)
Front passenger‘s footwell (RHD)
Assignment of the fuses in the Passenger compartment (footwell) (2018)
| Number | Electric equipment |
|---|---|
| Brown panel A | |
| 1 | — |
| 2 | Mass airflow sensor, camshaft adjustment, charge air cooler pump |
| 3 | Exhaust doors, fuel injectors, radiator inlet |
| 4 | Vacuum pump, hot water pump, particulate sensor, biodiesel sensor |
| 5 | Brake light sensor |
| 6 | Engine valves, camshaft adjustment |
| 7 | Heated oxygen sensor, mass airflow sensor |
| 8 | Water pump, high pressure pump, high pressure regulator valve |
| 9 | Hot water pump |
| 10 | Oil pressure sensor, oil temperature sensor |
| 11 | Clutch pedal position sensor |
| 12 | Engine valves |
| 13 | Radiator fan |
| 14 | Fuel injectors |
| 15 | Ignition coils |
| 16 | Fuel pump |
| Red panel B | |
| 1 | Anti-theft alarm system |
| 2 | Engine control module |
| 3 | Lumbar support |
| 4 | Automatic transmission selector mechanism |
| 5 | Horn |
| 6 | Electromechanical park ing brake |
| 7 | Gateway control module |
| 8 | Interior headl iner lights |
| 9 | — |
| 10 | Airbag control module |
| 11 | Electronic Stabilization Control (ESC) |
| 12 | Diagnostic connector, light/rain sensor |
| 13 | Climate control system |
| 14 | Right front door control module |
| 15 | A/C compressor |
| Black panel C | |
| 1 | Front seat heating |
| 2 | Windshield wipers |
| 3 | Left head light electronics |
| 4 | Panorama glass roof/ sliding/tilting sunroof |
| 5 | Left front door control module |
| 6 | Sockets |
| 7 | Right rear door control module |
| 8 | All wheel drive |
| 9 | Right headlight electronics |
| 10 | Windshield washer system/headlight washer system |
| 11 | Left rear door control module |
| Black panel D | |
| 1 | Seat ventilation, rearv iew mirror, rear climate control system controls |
| 2 | Gateway, climate control system |
| 3 | Sound actuator/exhaust sound tuning |
| 4 | Clutch pedal position sensor |
| 5 | Engine start |
| 6 | — |
| 7 | Rear USB charg ing port |
| 8 | Homelink |
| 9 | Adaptive cruise control |
| 10 | — |
| 11 | Video camera |
| 12 | Matrix LED headlight/right LED headlight |
| 13 | Matrix LED headlight/left LED headlight |
| 14 | Rear window wiper |
| Red panel E | |
| 1 | Ignition coils |
| 2 | Natural gas tank valves |
| 3 | — |
| 4 | — |
| 5 | Engine mount |
| 6 | Automatic transmission |
| 7 | Instrument panel |
| 8 | Climate control system (blower) |
| 9 | — |
| 10 | Dynamic steering |
| 11 | Engine start |
Driver’s side cockpit
Assignment of the fuses in the Driver’s side cockpit (2018)
| Number | Electric equipment |
|---|---|
| 1 | — |
| 2 | Telephone |
| 3 | — |
| 4 | Head-up display |
| 5 | Audi music interface, USB charging port |
| 6 | Front climate control system controls |
| 7 | Steering column lock |
| 8 | Infotainment system display |
| 9 | Instrument cluster |
| 10 | Infotainment unit |
| 11 | Light switch |
| 12 | Steering column electronics |
| 13 | — |
| 14 | Infotainment system |
| 15 | — |
| 16 | Steering wheel heating |
Left luggage compartment
Assignment of the fuses in the Left luggage compartment (2018)
| Number | Electric equipment |
|---|---|
| Black panel A | |
| 1 | — |
| 2 | Windshield defroster |
| 3 | Windshield defroster |
| 4 | — |
| 5 | Suspension control |
| 6 | Automatic transmission |
| 7 | Rear window defogger |
| 8 | Rear seat heating |
| 9 | Tail lights |
| 10 | Left safety belt tensioner |
| 11 | Central locking system |
| 12 | Electric luggage compartment lid |
| Red panel B | |
| — | Not assigned |
| Brown panel C | |
| 1 | — |
| 2 | Telephone |
| 3 | Lumbar support |
| 4 | Audi side assist |
| 5 | — |
| 6 | — |
| 7 | — |
| 8 | Smart module (tank) |
| 9 | — |
| 10 | — |
| 11 | 12 Volt battery |
| 12 | Homelink |
| 13 | Rearview camera, peripheral cameras |
| 14 | Right tail lights |
| 15 | — |
| 16 | Right safety belt tensioner |
| Red panel E | |
| 1 | — |
| 2 | Sound-amplifier |
| 3 | AdBlue heating |
| 4 | — |
| 5 | Trailer hitch (right light) |
| 6 | — |
| 7 | Trailer hitch |
| 8 | Trailer hitch (left light) |
| 9 | Trailer hitch (socket) |
| 10 | Sport differential |
| 11 | Ad Blue |
