2005 PORSCHE CAYENNE S fuel pressure

274
Maintenance, Car Care
Storing your PorscheIf you intend to store your Porsche for a prolonged
period, please consult your authorized Porsche
dealer. The staff will be glad to advise you on the
most suitable and necessary methods.
fClean your vehicle thoroughly inside and out-
side. Clean the engine compartment. The un-
der carriage and chassis components should
be free of dirt and salt deposits.
fFill up the fuel tank.
fChange the oil and oil filter, and run the engine
for several minutes.
fIncrease the tire pressure to 58 psi (4 bar).It is
not recommended to lift the vehicle, due to the
possibility of corrosion on shock absorber pis-
ton shafts.The vehicle should be moved slight-
ly, approximately every four weeks, to prevent
flat spot on the tires.Climate control
The air conditioning system should be in good
working condition and fully charged.
Windshield/Headlight washer
fCheck and correct antifreeze/cleaning solution
level as necessary.
Electrical system
fRemove the battery from the vehicle and store
it in a cool dry place, not on a cement floor.
When the battery is disconnected, the alarm
system is deactivated.
fRecharge the battery every 3 months. If the
battery remains in the vehicle with the cables
connected, it is necessary to check, remove
and recharge the battery every 2-3 weeks.
Do not fast charge the battery.
fPlease observe the chapter “CHARGE STATE”
on Page 320.Vehicle interior
The interior must be dry, especially in the area of
the floor carpets. The use of drying agents (Silica-
Gel) is recommended in vehicles with leather inte-
rior and in areas with high humidity. The recom-
mended amount is 3 fabric bags of 1.1 lbs.
(500 grams) each placed on the floor carpets.
Windows, doors, lids and roof must be closed.
The air vents should be opened.

Practical Tips, Minor Repairs
283
Tire carefAvoid damaging tires and wheel rims.
fIf you must drive over a curb or other obstacle,
drive slowly and at an obtuse angle.
fCheck tires for uneven wear and damage
before driving off.
fRemove imbedded material.
fReplace worn or damaged tires immediately.
fKeep oil, fuel, brake fluid, etc. away from tires.
fReplace missing valve stem caps.
fKeep tires inflated correctly.
fWash tires when washing the vehicle. Also
clean inner side of wheels.
fDo not use abrasive cleaners when washing
the wheels.
fCheck wheel rims for corrosion.
fRemove road salt, if driving in winter.
Tire damage, puncturefPlease observe the chapter “HIGH-PRESSURE
CLEANING UNITS” on Page 266.
Danger!
Risk of serious personal injury or death.
Driving the vehicle with low tire pressure
increases increases risk of a tire failure and
resulting loss of control. Furthermore, low
tire pressure increases rate of wear of the
affected tires.
fCheck tires – including sidewalls – regularly for
foreign bodies, nicks, cuts, cracks and bulges.
fAfter driving off road, examine tires for signs
of damage such as cuts, tears, bulges or for-
eign objects stuck in the tread. Replace a dam-
aged tire if necessary.
fCross curb edges slowly and at right angles if
possible.
Avoid driving over steep or sharp curbs.
fIn cases of doubt, have the wheel (particularly
the inner side) checked by an authorized Por-sche dealer.In case of tire damage, where it is uncertain
whether there is a break in the ply with all its con-
sequences or tire damage caused by thermal or
mechanical overloading due to loss of pressure or
any other prior damage, we recommend that the
tire be replaced for safety reasons.
If one faulty tire is replaced it should be noted that
the difference in tread depth on one axle must not
exceed 30%. Handling inconsistencies may result.
fPerform a visual inspection if necessary.

Practical Tips, Minor Repairs
319
Fuse assignment – fuse box in engine compartmentNote
Use 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 pump40
567
Fuel injectors, ignition coils
20
8 Fuel injectors, ignition coils20
9
Engine control units
30
10 Engine components: radiator fans, afterrun pump, carbon canister valve, AC pressure sensor, tank leakage diagnosis 10
11
Engine components
15
12 E-box relay, secondary air pumps, afterrun pump relay5
13
Fuel pump
15
14 Fuel pump15
15
Engine control unit, fuel pump
10
17
Oxygen sensors
15
18 Oxygen sensors7,5

348
Practical Tips, Minor Repairs
Headlight AdjustmentfCheck tire pressure and adjust if necessary.
fPlease observe the chapter “TIRE PRESSU-
RES, COLD” on Page 361.
fPlease observe the chapter “REPLACING BUL-
BS” on Page 336.Adjustment
The adjustment is made with the vehicle ready to
drive and the fuel tank completely filled.
The driver's seat must be loaded by a person or a
165lbs. (75kg) weight and the tire pressures must
meet the prescribed values. After being loaded,
the car must be rolled a few meters so that the
suspension can settle.
For checking the headlight adjustment, the verti-
cal position of the cutoff of the lowbeam (see fig.)
has to be projected on a vertical screen (wall) in
distance of 7.5 m (24.6 ft.) from the front lens of
the headlamp.The correct position of the cutoff is
7.5 cm (3.0 in.) at 7.5 m or 24.6 ft. (0.4°) below
a horizontal line, x cm from ground to the center
of the headlamp lens.
Lateral adjustment of the headlights should be
carried out at a specialist workshop with an optical
adjustment unit.
Distance
Visual aim shall be performed at not less than
7.5 m (this value is a rounded down conversion
from the 25-foot distance typical of field aim using
a screen). The 7.5 m (24.6 ft.) distance is mea-
sured from the headlamp lens to the viewing
screen.
Floor
The surface upon which the vehicle rests is flat
and approximately level.
Screen
The screen upon which headlamp beams are pro-
jected is perpendicular to the floor and the vehi-
cle's longitudinal axis, flat, uniformly light in color,
unobstructed, and wide and high enough to ac-
commodate the vehicle beam patterns to be
aimed.
The screen should be wide enough to provide at
least 3.3 ft. (1 m) of space outboard of the vehi-
cle's headlamp spacing.

370
Index Drinks holder .............................................. 180
Closing rear........................................ 181
Opening front ..................................... 180
opening rear ....................................... 181
Removing insert front .......................... 180
Driving
Load .................................................. 197
Off road ............................................. 227
Sand .................................................. 234
Trailer ................................................ 199
Winter ................................................ 209
Driving downhill .......................................... 231
Driving light assistant
Light switch ........................................ 116
Driving light assistant, automatic.................. 117
Driving performance ................................... 364
Driving program
Low Range indicator light .................... 212
Off road ........................... 206
,208
,211
Reduced ............................................ 209
Road .................................................. 212
Driving programme
Off road ............................................. 216
Road ................................ 205
,207
,216
Driving systems for off-road driving .............. 228
Driving with a trailer .................. 165
,198
,363
Drop-center rim .......................................... 290
DVD Player ........................................ 179,181
EEasy Entry function ....................................... 35
ECON mode ...................................... 135
,140
Button .............................. 129
,132
,136
Electrical system ........................................ 310Emergency flasher ...................................... 120
Emergency operation
Door lock ............................................. 23
Doors................................................... 18
Ignition key ........................................... 18
Sliding/lifting roof................................ 154
Emergency starting ..................................... 331
Emergency unlocking
Filler flap ............................................ 260
Selector lever ..................................... 210
Spare wheel bracket ........................... 309
Emission control ................................. 5
,8,79
Check engine warning light .................... 79
Emission Control System ............................. 263
Engine
Cooling system ..................................... 75
Data................................................... 356
Idling .................................................. 204
Starting and stopping ............................ 61
Engine compartment
Cleaning ............................................. 269
Lid ..................................................... 184
Engine compartment lid
Warning light....................................... 115
Engine drag torque control .......................... 221
Engine Oil
Performance class .............................. 248
Viscosity............................................. 248
Engine oil ................................................... 243
Change .............................................. 247
Dipstick .............................................. 245
Level .................................................. 244
Recommendation ................................ 247
Temperature gauge............................... 74Topping up .........................................246
Warning ..............................................244
Engine oil level ............................................244
Checking ............................................244
Engine residual heat ...........................135
,141
Entry aid.......................................................35
Switching on and off ..............................35
Exhaust gas
Monitoring ..............................................5
Monitoring warning light ..................70,72
Exit aid .........................................................35
Switching on and off ..............................35
FFabric linings ..............................................273
Filler flap ....................................................259
Release ................................................15
Filling pressure..............................................87
Plate ..................................................355
Reducing ...................................304
,306
Tables ................................................361
Warning light .........................70
,72,110
Warning message..................................95
Fire extinguisher..........................................175
First aid kit .................................................179
Floor mats ..................................................272
Fluids and fuels ...........................................362
Fog lights ...................................................116
Folding wedges...........................................295
Footbrake .....................................................65
Warning light .........................................66
Footwell light ..............................................151
Fresh-air intake ...........................................127
Front seat with memory ..........................33,34

Index
371
Front seats ................................................... 32
Adjusting the seats................................ 32
Seat position ........................................ 32
Front windshield wiper ................................. 122
Fuel .................................................... 76
,259
Economy ............................................ 258
Evaporation control ............................. 262
Level gauges ........................................ 76
Recommendations .............................. 261
Fuel containers, portable ........................ 6,262
Fuel gauge ................................................... 76
Fuel quality ..................................................... 8
Function keys ............................................... 54
Lighting ................................................ 55
Fuse assignment......................................... 313
Fuses......................................................... 311
GGarage door opener.................................... 167
Allocating ........................................... 168
Changeable code system .................... 168
Deleting ............................................. 169
Fixed code system .............................. 168
Gas discharge lamp .................................... 342
Glasses case .............................................. 176
Glove compartment .................................... 177
Gross weight .............................................. 195
Ground clearance ....................................... 365HHand-held transmitter .................................. 167
Headlight beam adjustment ....... 109
,118
,198
Headlights ................................ 198
,271
,337Bi-Xenon ....................................339
,342
Changing for left-hand traffic ................349
Closing the housing lid.........................340
Halogen.....................................339,341
Height adjustment ...............................349
Opening the housing lid .......................340
Setting ...............................................348
Washer system ...................................122
Headrest ......................................................36
Installing ...............................................36
Removing .............................................36
Setting .................................................36
Heated rear window .........127
,128
,132
,136
Height adjustment ..............................217,236
High beam.........................................116,119
Indicator light .................................70,72
Switch ................................................119
High Range...............86
,205
,207
,212
,216
On-road driving program ......................211
High-pressure cleaning units.........................266
Hillholder ....................................................224
Horn ............................................................52
IIdentification number ...................................354
Idling..........................................................204
Ignition lock ..................................................59
Immobilizer...................................................19
Inclination sensor .....................21
,23,27,30
Function indication ................................27
Monitored areas ....................................28
Switching off.........................................27
Switching off, temporarily ......................28
Switching on .........................................27Switching on, temporarily ...................... 28
Instrument panel
Lighting ............................................. 118
Interior light, front ...................................... 149
Interior lighting ........................................... 149
Interior mirror .............................................. 56
ISOFIX system .............................................. 48
JJack ................................................. 238
,291
Jacking point ............................................. 298
Jump lead starting
Leads ................................................ 332
Jumper cables ........................................... 331
KKeys............................................................ 17
Changing the battery .......................... 334
Emergency operation ........................... 18
Kickdown................................................... 206LLeather care .............................................. 272
Left-hand traffic.......................................... 349
Level control ... 85
,163
,179
,217
,236
,293
Loading level.................... 237
,238
,366
Low level ........................................... 236
Normal level....................................... 236
Special low level................................. 236
Special terrain level ............................ 236
Switching on and off ........................... 238
Warning light ...................................... 238

374
Index Warning light ............... 70
,72,112
,222
Porsche Traction Management ............ 217,218
Power measurement ................................... 242
Power steering ........................................... 253
Power windows ..................................... 29,30
Comfort function (windows).................... 30
One-touch operation .............................. 30
Opening/closing windows ...................... 29
Readiness for operation......................... 29
Storing end position .............................. 31
Switching off (rear)......................... 22,31
Power-transmission ..................................... 217
Preservation ............................................... 268
Pressure tester........................................... 306
PSM ........................................ 217
,220
,302
Deactivating ....................................... 222
Indicator light...................................... 112
Information light .................................. 222
Off road ............................................. 221
Switching on ....................................... 222
Warning light ............... 70
,72,112
,222
PTM........................................................... 217
RRadiator fans .............................................. 243
Radio
Tips ................................................... 172
Radio remote control .................................... 17
Changing the battery ........................... 334
Rain sensor ................................................ 121
Rain sensor operation ................................. 122
Reading light
Front.................................................. 149
Rear .................................................. 150Rear differential lock ................................... 214
Rear fog light..................................... 116
,346
Rear lid ...................................................... 182
Locking ................................................ 24
Opening ............................................... 24
Unlocking ............................................. 20
Rear light ................................................... 345
Rear seats.................................................... 37
Folding forward ..................................... 37
Positioning............................................ 39
Rear window ............................................... 184
Locking ................................................ 24
Opening ........................................ 20,24
Unlocking ............................................. 20
Rear window wiper ...................................... 123
Rear-axle load ............................................. 195
Reduction ..................................................... 86
Reflector .................................................... 345
Refuelling ................................................... 260
Relays ........................................................ 310
Release button............................................ 203
Relocking, automatic ..................................... 21
Remote control ............................................. 17
Changing the battery ........................... 334
Removing spots and stains .......................... 268
Reserve ..................................................... 260
REST button ............................. 129
,132
,136
REST mode ....................................... 135,141
Reverse gear ..................................... 166,202
Reversing light ............................................ 346
Rims .......................................................... 228
Diameter ............................................ 290
Rim width ........................................... 290
Rocker switches ......................................... 205
Roof console ..................................... 151,176Roof Transport System ..............193
,363
,365
Running in
Tires ....................................................14
Running-gear control systems ......................217
Running-gear setup......................................239
Indicator light ......................................113
Warning light .......................................239
SSafety belts .........................................42
,273
Belt tensioner .......................................43
Fastening..............................................44
Height adjustment .................................45
Opening................................................44
Warning light ..................................43,48
Safety catch, engine compartment lid ...........185
Safety compliance sticker ............................355
Safety net...................................................188
Assembly............................................190
Bracket ..............................................189
Permitted uses....................................189
Screewdriver ..............................................291
Sealant.........................................91
,98,296
Warning light .......................................110
Sealing set .................................................296
Seals, care .................................................271
Seat heating ........................................40,137
For air-conditioned areas at the rear .......41
Rear ...................................................137
Switching off .........................................40
Switching on .........................................40
Seat memory .......................................33,166
Recall using car key ..............................33
Recall using person buttons ...................33

379
Fuel Economy ............................................. 258
Operating Your Porsche in other Countries ... 258
Fuel ........................................................... 259
Fuel Recommendations ............................... 261
Portable Fuel Containers ............................. 262
Fuel Evaporation Control ............................. 262
Emission Control System............................. 263
Car Care Instructions .................................. 265
Exercise Extreme Caution when Working on your
Vehicle ....................................................... 276
Notes on Minor Repairs ............................... 276
Tires/Wheels .............................................. 277
Jack .......................................................... 291
Tool Kit ...................................................... 291
Lifting the Vehicle with a Lifting Platform or Garage
lift.............................................................. 292
Compressor ............................................... 293
Wheel Bolts ................................................ 293
Changing Wheels ........................................ 294
Flat Tire ..................................................... 295
Electrical System ........................................ 310
Battery....................................................... 320
Emergency Starting with Jumper Cables ....... 331
Replacing the remote control battery............ 334
Bulb Chart .................................................. 335
Replacing Bulbs .......................................... 336
Headlights .................................................. 337
Tail Light .................................................... 345
License Plate Lights .................................... 347
Headlight Adjustment .................................. 348
Changing Headlights from Left to Right-Hand Traf-
fic.............................................................. 349
Towing ....................................................... 350
Vehicle Identification.................................... 354
Engine Data................................................ 356Transmission ..............................................357
Tires, Rims, Tracks .....................................358
Tire Pressures, Cold ...................................361
Capacities ..................................................362
Weights ......................................................363
Driving Performance....................................364
Dimensions.................................................365
Ground Clearance .......................................366