Minor Repairs
287
Parking at the curb
Danger!
Hard impacts against curbs (or traffic
islands) are dangerous and may cause hid-
den tire damage which is not noticeable until
later. Such damage can result in accidents at
high speeds causing serious personal injury
or death. Depending on the force of impact,
the edge of the rim can also be damaged.
fIf you are in doubt, have the wheel checked by
an expert, particularly if you suspect damage
on the inside.
fIf you must drive over a curb or other obstacle,
drive slowly and at an obtuse angle. Exercise care when parking along curbs.
Maintenance Note
Tire repairs are not permissible under any circum-
stances.
Wheel alignment, wheel balancingAs a precaution, have wheels with summer tires
balanced in the spring, and those with mud and
snow tires before winter. Unbalanced wheels may
affect car handling and tire life.
Only the specified weights may be used for wheel
balancing. Self-adhesive weights must not come into contact
with cleaning agents, since they could drop off.
Uneven tread wear indicates wheel imbalance. In
this event, the vehicle should be checked at an
authorized Porsche dealer.
Danger!
If, during a trip, uneven running or vibrations
occur that could be caused by damage to
tires or the car, the speed must be reduced
immediately, but without braking sharply. If
you continue your trip without having the
cause of the fault remedied, you might lose
control of your vehicle which could cause
serious personal injury or death.
fStop the vehicle and check the tires.
fIf no cause for the fault can be found, drive ca-
refully to the nearest authorized Porsche dea-ler.
Wheels with Tire Pressure Monitoring
(TPM) sensorsBefore changing wheels, make sure that the
wheels are compatible with your vehicle’s TPM.
fCheck this with your authorized Porsche dea-
ler.
Removing and storing tiresfAfter changing, adjust tire pressure and torque
wheel bolts diagonally.
Please see the chapter “CHANGING WHEELS”
on Page 294.
fStore tires in a cool and dry place. Rotate peri-
odically to avoid flat spots.
fAvoid contact with petrol, oil and grease.
Tires must always remain on the same side of
the vehicle.
When wheels are removed, the direction of
rotation and position of each wheel should be
marked.
Example
FR (front right), FL, RR and RL.
Wheels must always be fitted in accordance with
their marking.
The perception that tire durability and perfor-
mance are not affected by storage and age is
unfounded.
Chemical additives, which make the rubber elas-
tic, lose their effectiveness over the course of
time and the rubber becomes brittle and cracks.
Therefore, the tires, especially the spare tire,
should be inspected from time to time.
10_Cayenne_21_KW17.book Seite 287 Donnerstag, 9. April 2009 3:33 15
294
Minor Repairs Tightening torque
Tightening torque of the wheel bolts and wheel
nuts 118 ftlb. (160 Nm).
Security wheel boltsThe adapter (wrench socket) for the security
wheel bolts is located in the tool box.
To loosen or tighten the wheel bolt with anti-theft
protection, the adapter must be used between the
wheel bolt and the wheel bolt wrench.
fWhen positioning the wrench socket, ensure
that it engages fully in the teeth of the wheel
bolt.
Note on operation
fOn vehicles with 17 mm spacers on the rear
axle, the wheels are secured with steel nuts.
There is no anti-theft protection for the wheel
nuts.
fIf the wheels have to be removed at the work-
shop, please do not forget to hand over the
socket for the security wheel bolts along with
the car key.
Changing Wheels
Warning!
Failure to follow these instructions may result
in serious personal injury or death to you or
to bystanders.
Before changing the wheel
fIf you have a flat tire, move a safe distance off
the road. Turn the emergency flasher on and
use other warning devices to alert other
motorists.
fDo not park your vehicle where it may contact
dry grass, brush or other flammable materials.
The hot parts of the exhaust system could set
such materials on fire, thereby causing both
property damage and severe or fatal physical
injury.
fPassengers must not be in the vehicle when it
is jacked up.
fBefore you change a wheel, be sure the ground
is level and firm. If necessary, use a board
under the jack to ensure that the jack does not
sink into the ground.
fSet the parking brake and block the wheels
opposite the flat tire on the other side of the
vehicle.While operating the jack
fThe jack is only to be used for changing a
wheel. Do not use it as a support to work under
the car.
fThe car must be jacked up only at the illustra-
ted jacking points.Lifting at any other place
may damage the vehicle or may result in per-
sonal injury. Never jack the car up by the body
or the bumpers.
fFor safety reasons do not use tire inflating bot-
tles. Do not use commercially available sealant
bottles. Use only the tire inflating bottle
located in the luggage compartment.
10_Cayenne_21_KW17.book Seite 294 Donnerstag, 9. April 2009 3:33 15
Minor Repairs
303
Screw in two assembly aids on vehicles with PCCB3. Remove the remaining wheel bolts.
For more information on wheel bolts:
Please see the chapter “WHEEL BOLTS” on
Page 293.
4. Change wheel.5. Insert wheel bolts and tighten by hand. Remo-
ve assembly aids and screw in remaining
wheel bolt.
Initially tighten bolts in diagonally opposite se-
quence so that the wheel is centered.
6. Inflate the tire if necessary.
Please see the chapter “TIRE PRESSURES,
COLD (68 °F/20 °C)” on Page 354.
In vehicles with tire pressure monitoring:
Please see the chapter “SETTING THE TIRE
TYPE AND SIZE” on Page 134.
7. Lower car and remove jack.
8. Tighten wheel bolts in diagonally opposite se-
quence.
Tire Pressure Monitoring:
The settings on the multi-purpose display must be
updated after a wheel change.
fPlease see the chapter “SETTING TIRE PRES-
SURE MONITORING” on Page 132.
Maintenance Note
fImmediately after changing a wheel, use
a torque wrench to check the prescribed
tightening torque of the wheel bolts
(118 ftlb./160 Nm).
Changing a wheel with removal of 17 mm
spacer
Danger!
Risk of accident if the spacers are not
removed before mounting 18 inch tires or
collapsible spare wheel.
f17 mm spacers are always to be removed
before mounting 18 inch tires or a collapsible
spare wheel, because the wheel cannot be fitted correctly. Caution!
Risk of damage to wheel housings if the
spacers on the rear axle are not removed be-
fore fitting the snow chains.
f17 mm spacers must always be removed from the rear axle when snow chains are to be fitted.
fRemove spacers if 18 inch tires, snow chains
or a collapsible spare wheel are mounted.
fIt is not necessary to use a assembly aid for
mounting a wheel or spare wheel of the same
quality.
fFor information on the spacers: Please see the
chapter “SPACERS” on Page 293.
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Minor Repairs
305
8. Inflate the tire if necessary.
Please see the chapter “TIRE PRESSURES,
COLD (68 °F/20 °C)” on Page 354.
On vehicles with Tire Pressure Monitoring:
Please see the chapter “SETTING THE TIRE
TYPE AND SIZE” on Page 134.
9. Lower the car and remove the jack.
10.Tighten wheel bolts in diagonally opposite
sequence.
Maintenance Note
fImmediately after changing a wheel, use
a torque wrench to check the prescribed
tightening torque of the wheel bolts
(160 Nm/118 ftlb.).
fSpacer, steel nuts, and plastic covers should
be stored together.
Fitting the 17 mm spacer1. Remove wheel.
2. Fit the spacer with the wheel bolts A used to
fasten the wheel.
Tightening torque: 160 Nm (118 ftlb.)
3. Fit wheel.
To d o t h i s use the original wheel nuts for
fastening the wheels.
Tightening torque: 160 Nm (118 ftlb.)
Place plastic covers onto the steel nuts.
Note
There is no anti-theft protection for the wheel nuts.Collapsible spare wheelThe collapsible spare wheel is fastened under the
floor in the luggage compartment.
On vehicles with 17 mm spacers:
fBefore fitting a collapsible spare wheel on the
rear axle always remove the corresponding
spacer.
For information on the spacers:
Please see the chapter “SPACERS” on
Page 293.
For information about removing the spacers:
Please see the chapter “CHANGING A WHEEL
WITH REMOVAL OF 17 MM SPACER” on
Page 303.1. Take out rotary knob A and put it on bolt B.
2. Unscrew the screw and take out the collapsible
spare wheel.
3. Mount the collapsible spare wheel on the vehi-
cle before inflating it. Leave the car jacked up.
Please see the chapter “LIFTING THE VEHICLE
WITH A JACK” on Page 299.
4. Inflate the tire.
Please see the chapter “TIRE PRESSURES,
COLD (68 °F/20 °C)” on Page 354.
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Index
377
Technical data
Capacities
.................................................... 359
Comfort tire pressure (bar/psi)
......................... 354
Dimensions
................................................... 360
Driving performance
....................................... 361
Engine
......................................................... 349
Ground clearance
........................................... 357
Tire pressure (bar/psi)
.................................... 354
Tires, wheels, tracks
...................................... 350
Weights
........................................................ 356
Telephone
............................................................. 219
Using via multi-purpose display
......................... 128
Telescopic bar (cargo management system)
Inserting and adjusting
.................................... 208
Temperature sensor
For 2-zone air conditioning
................................. 71
For 4-zone air conditioning
................................. 76
Temporary change-down
.......................................... 172
Terrain level
........................................................... 190
Test stands
Brake test
..................................................... 189
Theft protection
........................................................ 15
Tie-down
Belts
............................................................ 207
Equipment
.................................................... 233
Rings
........................................................... 212
Tie-down rings,
securing points in the luggage compartment
................ 207
Tiptronic S
............................................................... 58
Functional description
..................................... 170
Gear display on the multi-purpose display
........... 171
Gear selector
................................................ 171
Rocker switches
............................................ 172
Rocker switches on the steering wheel
................ 58
Selector lever
................................................ 171
Tire
Care
............................................................ 285
Checking pressure
......................................... 306
Life.............................................................. 285Traction
....................................................... 283
Wear
............................................................ 285
Tire and rim sizes
................................................... 353
Tire pressure
Air pressure (bar/psi)
...................................... 354
Comfort tire pressure (bar/psi)
......................... 354
Load
............................................................ 233
Plate
............................................................ 348
Plate location
................................................ 348
Reducing
............................................ 307
, 308
Warning light
....................................... 117
, 119
Warning light on speedometer
.......................... 141
Warning message on multi-purpose display
......... 151
When towing a trailer
...................................... 234
Tire Pressure Monitoring
Functional description
..................................... 133
Setting on the multi-purpose display
.................. 132
Setting the tire type and size
............................ 134
Setting vehicle loading
.................................... 135
Tire sealant/sealing set
For defective tires
.......................................... 296
Setting on the multi-purpose display
.................. 140
Tires
Breaking in new tires
.......................................... 6
Changing
............................................ 220
, 302
Comfort tire pressure, data (bar/psi)
................. 354
Damage
....................................................... 286
Fitting spare wheel on spare wheel bracket
......... 309
Flat
.............................................................. 295
General information
........................................ 281
Inflating
........................................................ 307
Inflating (with compressor from tool kit)
.............. 307
Inflating (with compressor
on vehicles with air suspension)
........................ 308
Inscription on radial tire
................................... 290
Overview
...................................................... 350
Removing spare wheel from spare wheel bracket
.309
Removing/fitting spacers
................................. 303
Replacing tires (general information)
.................. 286
Rim offset
..................................................... 350
Sealant
......................................................... 296
Sidewall
........................................................ 290
Size
................................................... 290
, 350
Snow chains (general information)
..................... 289
Spare wheel (general information)
..................... 309
Storage
........................................................ 287
Tire pressure plate
......................................... 348
Tire pressure, data (bar/psi)
............................ 354
Tracks
......................................................... 350
Valves
.......................................................... 286
Wheel bolt wrench
.......................................... 292
Winter tires (general information)
....................... 288
Tool kit
.................................................................. 281Compressor (on vehicles without air suspension)
.292
Jack
............................................................ 291
Screwdriver
.................................................. 292
Wedges
........................................................ 296
Wheel bolt wrench
..........................................292
Tools
....................................................................281Compressor (on vehicles without air suspension)
.292
Jack
.............................................................291
Screwdriver
...................................................292
Wedges
........................................................296
Wheel bolt wrench
..........................................292
Torque, Technical data
.............................................349
Towing
Capacity
.......................................................231
General information
........................................342
Screwing in front towing hook
...........................344
Screwing in rear towing hook
...........................343
Towing bar
....................................................342
Towing hook when recovering the vehicle
...........345
Towing rope
..................................................342
Track
Data
............................................................350
Traction
.................................................................198
Traction control system (TCS)
Functional description
.....................................182
Trailer
Coupling
.......................................................230
Definitions
.....................................................231
Effects on ParkAssist
......................................240
Electrical connection
.......................................230
Hitching
........................................................230
Operation
......................................................230
Retrofitting
....................................................230
Tips on driving
...............................................235
Trailer load data
.............................................356
Unhitching
.....................................................230
Transmission
Shift pattern
..................................................169
Transport (on car trains, ferries, etc.)
Securing the vehicle
.......................................192
Transverse lock
Displaying status of locks
on the multi-purpose display
.............................131
Engaging
......................................................178
Trip counter
Display
.........................................................121
Resetting
......................................................121
Turn signal
Switch
..........................................................106
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