2002-2010 Porsche Cayenne SUV Minor repairs -> Electrical system User Manual
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Minor repairs -> Electrical system for Your Porsche Cayenne SUV First Generation (2002-2010)

Minor Repairs 321
Electrical system
In order to avoid damage and faults in electrical or
electronic systems, electrical accessories should
be installed by a qualified specialist workshop. We
recommend that you use a Porsche partner for
this work since these are staffed with trained
personnel and have the necessary parts and
tools.
f Use only accessories authorised by Porsche.
Warning!
Risk of short circuit and fire.
f Disconnect the battery during all work on the
electrical system.
Relays
Relays should be checked or changed only by an
authorised workshop.
Sockets
The assignment and number of sockets depend
on the respective vehicle equipment.
Electrical accessories can be connected to the
12 V sockets.
Note on operation
The sockets and thus the connected electrical
accessories function even if the ignition is
switched off or the ignition key is withdrawn.
If the engine is not running and the accessories
are switched on, the vehicle battery will be
discharged.
322 Minor Repairs
Changing fuses
In order to prevent damage to the electrical
system due to short circuits and overloads, the
individual circuits are protected by fuses.
One fuse box is in the engine compartment. Two
additional fuse boxes are located in the outer ends
of the dashboard.
1. Switch off the load with the defective fuse.
2. Open the fuse-box lid.
3. Remove the corresponding fuse from its slot to
check it with the plastic gripper.
A blown fuse can be identified by the melted
metal strip.
4. Replace only with fuses of the same rating.
Note
f If a fuse blows repeatedly:
Consult a qualified specialist workshop. We
recommend that you use a Porsche partner for
this work since these are staffed with trained
personnel and have the necessary parts and
tools.
Cover of engine-compartment fuse box
Opening fuse-box lid in engine compartment
1. Rotate the turn-locks 90° counter-clockwise
with a screwdriver and remove the cover.
Fuse box in engine compartment
2. Rotate the turn-locks of the fuse-box lid 90°
counter-clockwise with a screwdriver and
remove the lid.
Minor Repairs 323
Opening fuse-box lid in the dashboard
1. Carefully lever off the plastic cover with a
screwdriver (arrow) and remove.
The fuse plan is located on the inside of the
cover.
A - Plastic gripper
2. Carefully remove the fuses with plastic
gripper A.
324 Minor Repairs
Fuse assignment – fuse box in left side of dashboard
No. Designation Rating in A
1 Centre console socket, cigarette lighter 20
2 Parking heater radio receiver 5
3 Socket in passenger footwell 20
4 Parking heater 20
5 Sockets in luggage compartment 20
6 not used
7 Diagnostic socket, rain sensor, light sensor 5
8 Wiper motor for windscreen 30
9 Vehicle electrical system control unit, pump for washer fluid 15
10 Power window, rear left 25
11 Central locking system, left 15
12 not used
13 not used
14 Power window, front left 25
15 Tail light, right 15
16 Vehicle electrical system control unit, horn 20
17 Vehicle electrical system control unit, left direction indicator, right parking light, left dipped beam 30
18 Headlight washer system 20
19 Vehicle electrical system control unit, interior light 5
20 Instrument lighting, left fog light, left additional high beam 30
Minor Repairs 325
21 not used
22 Rear differential lock, automatic rear lid 30
23 Differential lock 10
24 Tyre Pressure Monitoring 5
25 not used
26 Engine control unit (engine management, radiator fans), airbag, instrument panel 10
27 not used
28 not used
29 not used
30 not used
31 not used
32 not used
33 Steering column module 15
34 Passenger compartment monitoring, inclination sensor 5
35 Vehicle electrical system control unit, right fog light, right additional high beam, interior light 30
36 Electrical seat adjustment, left 30
37 not used
38 not used
39 Heated rear window 5
40 Instrument panel, diagnosis 5
41 Steering column lock, ignition lock, central locking system, Porsche Entry & Drive 15
42 Sliding/lifting roof or Panorama roof system 30
43 Subwoofer 30
No. Designation Rating in A
326 Minor Repairs
44 Electrical seat adjustment, left; electrical steering column adjustment 30
45 Seat heating, rear 30
46 not used
47 Rear differential lock 10
48 not used
49 Servotronic 5
50 not used
51 Air conditioner, diagnosis, moving-off assistant 5
52 Rear wiper 30
53 Vehicle electrical system control unit, automatic dipped beam, steering column module 5
54 Headlight beam adjustment 10
55 not used
56 Fan, front air-conditioning system 40
57 Fan, rear air-conditioning system 40
RES 1 Spare fuse 1
RES 2 Spare fuse 2
No. Designation Rating in A
Minor Repairs 327
Fuse assignment – fuse box in right side of dashboard
No. Designation Rating in A
1 Trailer coupling 15
2 ParkAssist 5
3 Trailer coupling 15
4 Telephone/telematics 5
5 Trailer coupling 15
6 Porsche Stability Management (PSM) 30
7 Transfer box (centre-differential lock), telephone preparation 5
8 Vehicle electrical system control unit, left parking light, right direction indicator, right dipped beam 30
9 CD changer, DVD navigation 5
10 TV tuner, satellite receiver 5
11 Radio or Porsche Communication System (PCM) 10
12 Amplifier for sound package 30
13 not used
14 Tail light, left 15
15 Power window, rear right 25
16 not used
17 not used
18 Heated rear window relay 30
19 Trailer coupling 25
20 not used
328 Minor Repairs
21 Spare wheel release, horn for alarm system 10
22 Electrical seat adjustment front right, front seat heating 30
23 Air conditioner 10
24 Seat memory, front right; electrical seat adjustment, front right 30
25 Air conditioner, rear 5
26 Xenon headlight, right 10
27 Level control 15
28 not used
29 Transmission control unit, Tiptronic selector lever switch 10
30 Rear lid power closing mechanism 20
31 Central locking system, filler flap 15
32 Central locking system, right doors 10
33 not used
34 Power window, front right 25
35 Electrical seat adjustment, right 30
36 Roof console, telephone, compass 5
37 Xenon headlight, left 10
38 Porsche Stability Management 10
39 Diagnosis 5
40 Transfer box (centre-differential lock) 10
41 Trailer coupling 10
42 Roof module 5
43 Reversing light 5
No. Designation Rating in A
Minor Repairs 329
44 Heatable washer nozzles, air suspension, seat heating 5
45 not used
46 not used
47 Telephone preparation 10
48 Level control 10
49 Telephone, anti-dazzle interior mirror 5
50 Vehicles for Japan: blind spot detection 5
51 Tiptronic transmission 15
52 Tiptronic selector lever switch 5
53 not used
54 not used
55 Reversing camera 5
56 Porsche Stability Management (PSM) 40
57 Transfer box (centre-differential lock) 40
No. Designation Rating in A
330 Minor Repairs
Fuse assignment – fuse box in Cayenne engine compartment
Note
f Use the plastic grippers from the fuse boxes in the dashboard to replace the fuses.
No. Designation Rating in A
1 Fan 60
2 Fan 30
3 not used
4 not used
5 not used
6 not used
7 Ignition coils 15
8 Ignition coils 15
9 Engine control unit, high-pressure fuel injectors, throttle adjusting unit 20
10 Water run-on pump, tank leakage detection, carbon canister shut-off valve, fan, pressure sensor for air conditioner 10
11 Air-conditioning compressor, service interval sensor, crankcase vent 10
12 Camshaft adjustment, tank vent, quantity control valve 15
13 Fuel pump, right 15
14 Fuel pump, left 15
15 Engine control unit, main relay 10
16 not used
17 Oxygen sensors ahead of catalytic converter 15
18 Oxygen sensors behind catalytic converter 7.5
Minor Repairs 331
Fuse assignment – fuse box in Cayenne S engine compartment
Note
f Use the plastic grippers from the fuse boxes in the dashboard to replace the fuses.
No. Designation Rating in A
1 Fan 60
2 Fan 30
3 not used
4 not used
5 not used
6 not used
7 Ignition coils 15
8 Tank vent, air-conditioning compressor, intake pipe switchover, crankcase vent 15
9 Quantity control valve, camshaft adjuster, valve lift adjuster 15
10
Engine components: Cooling air output stages, carbon canister shut-off valve, pressure sensor for air conditioner,
tank leakage detection, exhaust flap control valve, Hall sensor, oil-level sensor
10
11 Engine control unit, high-pressure fuel injectors, throttle adjusting unit 20
12 not used
13 Fuel pump, right 15
14 Fuel pump, left 15
15 Engine control unit, main relay 10
16 not used
17 Oxygen sensors ahead of catalytic converter 15
18 Oxygen sensors behind catalytic converter 7.5

Related Topics

Minor repairs
Notes on minor repairs Tyres and wheels Jack Tool kit Compressor Spacers Wheel bolts Flat tyre Inflating tyres on vehicles without level control Inflating tyres on vehicles with level control Battery Replacing the remote control battery External power supply, jump lead starting Replacing bulbs Headlights Tail light Number plate lights Headlight adjustment Changing headlights from left to right-hand traffic Bulb chart Towing and tow-starting

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