
334
Practical Tips, Minor Repairs
Electrical SystemIn order to avoid damage and faults in electrical or
electronic systems, electrical accessories should
be installed at your authorized Porsche dealer.
fUse only accessories authorized by Porsche.
Warning!
Risk of short circuit and fire.
Replacing fuses or relays with engine running
or the ignition on could cause electrical
shock.
fDisconnect the battery during all work on the electrical system.
RelaysRelays should be checked or changed only by an
authorized workshop.Alarm system, central lockingThe status of the central locking and alarm system
is not changed by disconnecting the battery.
When the battery is disconnected, the alarm
system ceases to function.
SocketsElectrical accessories can be connected to the
12 V sockets.Note on operation
The sockets and thus the connected electrical ac-
cessories function even if the ignition is swi tched
off or the ignition key is withdrawn.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.

Practical Tips, Minor Repairs
335
Changing fusesIn order to prevent damage to the electrical
system due to short circuits and overloads, the in-
dividual 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 consumer with the defective
fuse. Before replacing a fuse, switch off all
electrical consumers and remove the ignition
key.
2. Open the fuse-box lid.
3. Remove the corresponding fuse from its slot to
check it using the plastic gripper.
A blown fuse can be identified by the melted
metal strip.
4. Replace only with fuses of the same rating.
Note
If a fuse blows repeatedly, please consult an au-
thorized Porsche dealer immediately, so that the
short circuit can be located and corrected.
Never try to “repair“ fuses: you may cause serious
damage to other parts of the electrical system.
Cover of engine-compartment fuse boxOpening fuse-box lid in engine compartment
1. Rotate the turn-locks 90° anti-clockwise with a
screwdriver and remove the cover.
Fuse box in engine compartment2. Rotate the turn-locks of the fuse-box lid
90° anti-clockwise with a screwdriver and re-
move the lid.
f f f

336
Practical Tips, Minor Repairs Opening fuse-box lid in the dashboard
1. Carefully pry off the plastic cover with a screw-
driver (arrow) and remove.
The fuse plan is located on the inside of the
cover.
A- Fuse puller2. Remove the fuses carefully with the fuse puller.

Practical Tips, Minor Repairs
343
Fuse assignment – fuse box in engine compartmentNote
fUse the plastic grippers from the fuse boxes in the dashboard to replace the fuses. No. Designation Rating in A
1
Fan
60
2Fan30
3
Secondary air pump
40
4 Secondary air pump (Cayenne S)40
567
Fuel injectors, ignition coils
20
8 Fuel injectors, ignition coils20
9
Engine control module, camshaft adjusters, intake pipe switchover (Cayenne)
30
10Engine components: cooling air fan, carbon canister shut-off valve, pressure sensor for air conditioning, tank leakage detection,
run-on pump (Cayenne S), carbon canister shut-off valve valve (Cayenne)10
11
Engine existing wiring, secondary air pump (Cayenne), air-conditioning compressor (Cayenne), oil-level sensor (Cayenne)
15
12 Secondary air pumps, run-on pumps5
13
Fuel pump, right
15
14 Fuel pump, left15
15
Engine control module, main relay
10
16 Water run-on pump (Cayenne)30
17
Oxygen sensors ahead of catalytic converter
15
18 Oxygen sensors behind catalytic converter7.5

Index
395
Footwell light .............................................. 168
Fresh-air intake ........................................... 143
Front seat with memory................... 37
, 38, 68
Front seats ................................................... 36
Adjusting the seats................................ 36
Seat position ........................................ 36
Front windshield wiper ................................. 138
Fuel .................................................... 88
, 277
Economy ............................................ 276
Evaporation control ............................. 281
Level gauges ........................................ 88
Recommendations .............................. 280
Fuel containers, portable ........................ 6, 281
Fuel gauge ................................................... 88
Fuel quality ..................................................... 8
Function keys ............................................... 64
Lighting ................................................ 65
Fuse assignment......................................... 337
Fuses......................................................... 335
GGarage door opener.................................... 184
Allocating ........................................... 185
Changeable code system .................... 185
Deleting ............................................. 186
Fixed code system .............................. 185
Gas discharge lamp .................................... 366
Glasses case .............................................. 193
Glove compartment .................................... 194
Gross weight .............................................. 213
Ground clearance ....................................... 389
HHand-held transmitter..................................184
Headlight beam adjustment........125
, 134
, 216
Headlights ................................216
, 290
, 361
Bi-Xenon ....................................363, 366
Changing for left-hand traffic ................373
Closing the housing lid.........................364
Halogen.....................................363, 365
Height adjustment ...............................373
Opening the housing lid .......................364
Setting ...............................................372
Washer system ...................................138
Headrest ......................................................40
Installing ...............................................40
Removing .............................................40
Setting .................................................40
Heated rear window .........143
, 144
, 148
, 152
Height adjustment ..............................235, 254
High beam.........................................132, 135
Indicator light .................................82, 84
Switch ................................................135
High Range.............101
, 223
, 225
, 230
, 234
On-road driving program ......................229
High-pressure cleaning units.........................285
Hillholder ....................................................242
Horn ............................................................62
IIdentification number ...................................378
Idling..........................................................222
Ignition lock ..................................................70
Immobilizer...................................................21Inclination sensor ............. 24
, 26, 28, 34, 35
Function indication................................ 32
Monitored areas ................................... 28
Switching off ........................................ 29
Switching on ........................................ 29
Switching on, temporarily ...................... 30
Instrument panel
Lighting ............................................. 134
Interior light, front...................................... 166
Interior lighting ........................................... 166
Interior mirror .............................................. 66
ISOFIX system .............................................. 60
JJack ................................................. 256
, 311
Jacking point ............................................. 319
Jump lead starting
Leads ................................................ 356
Jumper cables ........................................... 355
KKeys............................................................ 17
Changing the battery .......................... 358
Kickdown................................................... 224