Diagrams of fuse boxes and relays – Porsche Cayenne 9Y0

Applies to vehicles manufactured in the years:

2017, 2018, 2019, 2020, 2021.

Chambers and amps

• Light brown 5 A.
• Brown 7.5A
• Red 10 A.
• Blue 15 A.
• Yellow 20 A.
• White / Transparent 25 A.
• Green 30 A.
• 35 Amp Blue / Green
• Orange 40 A.

 

Fuse box on the dashboard

Number	Description
1	–
2	Smartphone tray; ETC toll system card reader.
3	–
4	–
5	USB connection
6	Air conditioning control unit
7	Electric steering column lock
8	–
9	Instrument cluster
10	Touch display in the dashboard
11	Light switch
12	Steering column switch
13	–
14	PCM
15	Electric steering column lock
16	Heated steering wheel switch

 

Fuse box in front left footwell (right-hand drive)

Fuse box in left front footwell (left-hand drive)

Number	Description
Row A
1	–
2	Air mass flow sensor
3	Exhaust flaps; Injectors; Radiator inlet.
4	Exhaust flaps; Vacuum pump; Hot water pump; Exhaust gas treatment.
5	Brake light sensor
6	Engine valves
7	Oxygen sensors; Mass air flow sensor.
8	Engine cushions; High pressure pump; High pressure regulating valve; Mass air flow sensor.
9	Engine relay
10	Oil pressure sensor; Oil temperature sensor.
11	Radiator shutter, 48V
12	Engine valves
13	Radiator fan
14	Injectors
15	Oxygen sensors
16	Fuel pump
Row B
1	Ignition coils
2	Engine radiator valve; Ignition Circuit Diagnosis.
3	–
4	–
5	Engine mounts
6	Front left reversible seat belt, pretensioner
7	Panel
8	Front right reversible seat belt pretensioner
9	Front heater fan
10	–
11	Starter, thermal management
12	All-wheel drive
Row C.
1	Front seat heating
2	Front left door control unit
3	Power outlet
4	Roof system
5	Left headlight electronics
6	Rear left door control unit
7	Windshield wiper
8	Rear right door control unit
9	Right headlight electronics
10	Headlamp / windshield washer system
11	Air conditioning control unit
12	Clutch
Row D
1	Seat ventilation; Seat heating; Rear view – mirror; Air conditioning control panel at the rear; Air conditioning pressure sensor.
2	Gate control unit
3	Sound actuator
4	Gearbox heater valve
5	Engine start
6	–
7	Active accelerator pedal
8	Night vision assistant; Ionizer; Opening a garage door.
9	Adaptive Cruise Control (ACC)
10	All-wheel drive; Differential lock.
11	Video camera
12	Seat ventilation
13	Chair disconnect points
14	–
15	Right headlight electronics
16	Left headlight electronics
Row E.
1	Alarm
2	Engine control unit
3	–
4	Gear shift mechanism
5	Horn
6	Parking brake switch
7	Gate control unit
8	Suspended console
9	–
10	Airbag control unit
11	PSM control unit
12	Diagnostic socket; Light and rain sensor.
13	Air conditioning system
14	Front right door control unit
15	Air conditioning compressor
16	Braking system

Fuse box in the trunk

Number	Description
Row A
1	Thermal management
2	–
3	–
4	–
5	Pneumatic suspension
6	Gearbox control unit
7	Rear roller shutter; Comfort access;
8	Seat heating (does not apply to E-Hybrid vehicles)
9	–
10	Trailer hitch (left light)
11	Tailgate control unit
12	Rear blower regulator
Row B
1	Left tail light
2	–
3	Rear spoiler
4	Rear climate control panel
5	Trailer hitch (right light)
6	Trailer hitch (rotary engine)
7	Towbar
8	–
9	Trailer hitch (socket)
10	Differential lock
11	Seat adjustment
12	–
Row C.
1	Control unit for assistance systems
2	Smartphone tray
3	–
4	Lane change assistant
5	–
6	Tire pressure monitoring system
7	Control unit for assistance systems
8	Radio receiver of parking heater
9	–
10	–
11	Roof antenna
12	Garage door opener
13	Spatial view
14	Right rear light
15	–
16	Subwoofer
Row D
1	PDCC
2	High voltage battery
3	High voltage battery water pump
4	Electric engine
5	Braking system
6	–
7	Starter 12 V
8	Air conditioning compressor
9	48 volt system
10	High voltage battery
11	Charger
12	–
13	–
14	Thermal management
15	–
16	–