2005 PORSCHE CAYENNE S change time

3
Regularly check your vehicle for signs of
damage.
Damaged or missing aerodynamic compo-
nents such as spoilers or underside panels
affect the driving behavior and therefore
must be replaced immediately.
Your car may have all or some of the components
described in this manual.
Should you have difficulty understanding any of
the explanations of features or equipment installed
in your vehicle, contact your authorized Porsche
dealer. He/She will be glad to assist you. Also
check with your dealer on other available options
or equipment.
Throughout this booklet, left is designated as the
driver's side of the vehicle, and right as the pas-
senger's side of the vehicle.
Text, illustrations and specifications in this manual
are based on the information available at the time
of printing.
It has always been Porsche's policy to continuous-
ly improve its products. Porsche, therefore, re-
serves the right to make changes in design and
specification, and to make additions or improve-
ments in its product without incurring any obliga-
tion to install them on products previously manu-
factured.
We wish you many miles of safe and pleasurable
driving in your Porsche.
Important!
For your own protection and longer service life of
your car, please heed all operating instructions
and special warnings. These special warnings use
the safety alert symbol, followed by the words
Danger, Warning and Caution. These special
warnings contain important messages regarding
your safety and/or the potential for damage to
your Porsche. Ignoring them could result in se-
rious mechanical failure or even physical injury.
fDo not alter your Porsche. Any alteration could
create dangerous conditions or defeat safety
engineering features built into your car.
fDo not misuse your Porsche. Use it safely, and
consistently with the law, according to the dri-
ving conditions, and the instructions in this ma-
nual.
Alteration or misuse of your Porsche could
cause accidents and severe or fatal personal
injuries.
Note to ownersIn Canada, this manual is also available in French.
To obtain a copy contact your dealer or write to:Note aux proprietairesAu Canada on peut se procurer un exemplaire de
ce Manuel en français auprès du concessionaire
ou du:
Porsche Cars Canada, Ltd.
Automobiles Porsche Canada, LTEE
5045 Orbitor Drive
Building #8, Suite 200
Mississauga, Ontario
Canada L4W 4Y4
Telephone number for customer assistance:
1-800-PORSCHE / Option 3

54
Controls, Safety, Instruments
Multi-Functional Steering Wheel
Warning!
There is a danger of accident if you set or
operate the on-board computer, radio, navi-
gation system, telephone or other equipment
when driving.
This could distract you from the traffic and
cause you to lose control of the vehicle.
fOperate the components while driving only if
the traffic situation allows you to do so safely.
fCarry out any complicated operating or setting procedures only with the vehicle stationary.
Depending on the equipment in your vehicle, you
can use these function keys to operate the follow-
ing Porsche communication systems:
– Radio with CD drive
– CD changer
– Satelite radio
Readiness for operation of multi-
functional steering wheel– With ignition switched on and
– With Porsche communication systems
switched on.
fPlease observe the operating instructions sup-
plied for the Porsche communication systems
before operating the function keys.
Note on operation
The Porsche communication systems cannot be
switched on and off using the multi-functional
steering wheel.
Operating the function keysThe function keys on the steering wheel (arrows)
can be operated by pressing and by pulling.
Various functions may require you to press or pull
the buttons several times in order to achieve the
desired setting.

Controls, Safety, Instruments
69
Warning!
fDo not obstruct the pedal travel with floor mats
or other objects.
The brake booster is ready for operation only
while the engine is running.
If the engine is switched off or there is a defect in
the brake booster, much greater force has to be
applied to the pedal when braking.
fPlease observe the chapter “TOWING” on
Page 350.
In heavy rain, while driving through water or after
leaving a car wash, the braking action may be de-
layed and increased pressure may be required.
fFor this reason, keep further back from the ve-
hicle in front and “dry” the brakes by applying
them at intervals. Make sure that following traf-
fic is not affected.
After a long drive over salted or gritted roads, a
coating may form on the brake discs and pads
that significantly reduces friction and thus braking
action.
fTherefore, clean the brake discs and pads ap-
prox. every 2 weeks with a strong jet of water.
The cleaning effect of automatic car washes is
insufficient.
To prevent corrosion of the brake discs, “brake
them dry” before parking the car.fEven though the brake discs consist of alloyed
grey cast iron, they will unavoidably start to
corrode if your car is parked for an extended
period. The brakes will tend to “rub” as a re-
sult.
The nature, extent and effects of corrosion de-
pend on the amount of time the vehicle was
parked, whether road salt or grit was spread
and whether grease-dissolving agents were
used in car washes.
If the braking comfort is noticeably impaired,
we recommend having the brake system
checked by experts at an authorized Porsche
dealer.
fTo relieve the braking system on downhill
stretches, change down to a lower gear in
good time to obtain engine braking.
If engine braking is insufficient on steep
stretches, operate the footbrake at intervals.
Continuous braking overheats the brakes and
reduces the braking effect.
fPlease observe the chapter “BRAKE-FLUID LE-
VEL” on Page 251.

Controls, Safety, Instruments
87
Tire PressureThe tire pressure monitoring system monitors the
pressure in the four road wheels and warns the
driver if the pressure is too low.
The display as well as the settings for tire pres-
sure monitoring are done on the multi-purpose dis-
play in the TYRE PRESSURE menu.
However the tire pressure must be set manually
on the wheel.
The tire pressures to be monitored for tire type
are permanently set in the tire pressure
monitoring system and cannot be changed.
The driver is solely responsible for filling the tires
correctly and for selecting in the multi-purpose dis-
play.
Danger!
Risk of serious personal injury or death.
Driving the vehicle with low tire pressure in-
creases increases risk of a tire failure and re-
sulting loss of control. Furthermore, low tire
pressure increases rate of wear of the affect-
ed tires.
fWhen a flat tire has been displayed, immedi-
ately stop in a suitable place and check the
tires for damage. If necessary remedy the
damages with a tire sealant.
fDo not by any means continue to drive with
leaking tires.
fDefective tires must be immediately replaced
by a specialist workshop.
Tire repairs are not permissible under any
circumstances.
fSealing the tire with the tire sealant is only an
emergency repair, so you can drive to the next
workshop. The maximum permitted speed is
50 mph (80 km/h).
fDo not drive with tires whose tire pressure
drops again in a short period of time. In cases
of doubt, have tires checked by a specialist
workshop.
fIf the tire pressure monitoring system is
defective (e.g., defective wheel transmitter),
contact a specialist workshop immediately and
have the damages repaired.
The tire pressure will not be monitored by a
defective tire pressure monitoring system.fUse only the pressure differences shown in the
TYRE PRESSURE menu or from tire pressure
messages or warnings when correcting the
tire pressure.
fTires lose air over time without a tire defect
being present. A tire pressure warning will then
appear in the multi-purpose display.
Correct the tire pressure.
fThe tire pressure monitoring system gives a
warning about tire damages due to insufficient
tire pressure as well as about a gradual loss of
pressure due to foreign objects.
The tire pressure monitoring system cannot
warn you about tire damages occurring sud-
denly (e.g., flat tire due to sudden external ef-
fects).
fIf a message is displayed, check the tire
pressure at the next opportunity.
fBefore fitting tires approved by Porsche which
are not stored in the on-board computer, the
missing information should be supplemented
in the on-board computer.

Controls, Safety, Instruments
89
System learning phaseEach time a wheel is changed, the tire pressure
monitoring system re-learns the tires. The system
identifies the wheel positions.
The current tire pressures will not be available on
the multi-purpose display until the learning phase
is complete.
System learning phase
fSelect tire type and tire size in the menu TYRE
PRESSURE > SETTINGS > TYRES.
The learning process is started. The tire type
and size m ust b e sele cte d even if the se tting s
for the new set of wheels are the same as for
the old wheels.Note
The spare wheel and collapsible spare wheel do
not contain a wheel transmitter and are not
monitored by the tire pressure monitoring system.
The tire pressures for cold tires (68 °F/20 °C) are
shown in the TYRE PRESSURE menu (filling infor-
mation) during the learning phase. The required
pressure for the spare wheel is always displayed
in the TYRE PRESSURE menu (filling information).
fCheck the tire pressure for the spare wheel
and collapsible spare wheel manually.
Tire pressure menuMAIN MENU > TYRE PRESSURE
The TYRE PRESSURE menu provides an overview
of the current pressure specifications for the
respective wheel (filling information). The pressure
differences with respect to the required pressure
are specified.
If the wheels have not been learned, the current
pressures are unavailable.
The spare wheel is not monitored. The required
pressure is specified in brackets.
To make changes to the settings of the tire pres-
sure monitoring system, select SETTINGS in the
TYRE PRESSURE menu.

Controls, Safety, Instruments
95
Tire pressure warnings and
messagesThe tire pressure monitoring system warns about
loss in pressure in two stages, depending on the
amount of pressure loss:
Stage 1 – Tyre pressure too low message
(3 to 6 psi (0.2 to 0.4 bar) loss in pressure)
Stage 2 – Flat tyre warning
(loss in pressure as of 6 psi (0.4 bar))
Warning!
Risk of accident. Tire damage may impair
road safety.
fStop the vehicle in a suitable place. Check the
tires for signs of damage and change them if necessary.
Example: If the tyre pressure display shows
„– 3 psi“, you must increase the tyre pressure by
3psi.
Tires lose air over time without a tire defect being
present. The tire pressure monitoring system will
then issue a corresponding message or warning.
fCorrect the tire pressure.
Message indicating tire pressure lossThis message indicates a pressure loss of be-
tween 3 and 6 psi (0.2 and 0.4 bar) if the wheel
positions have not been identified.
This message appears when the vehicle is station-
ary and the ignition is switched on again.
fThe message is displayed for 10 seconds or
fPress RESET switch.
Note on operation
fCorrect the tire pressure at the next opportuni-
ty. When correcting the tire pressure, add only
the pressure differences shown in the "Ty re
pressure" menu.
Message indicating tire pressure loss for
a wheelThe system has identified the wheel positions. The
deviation from the required pressure is displayed
for the corresponding wheel.
This message indicates a pressure loss of be-
tween 3 and 6 psi (0.2 and 0.4 bar).
This message appears when the vehicle is station-
ary and the ignition is switched on again.
fThe message is displayed for 10 seconds or
fPress RESET switch.
Note on operation
fCorrect the tire pressure at the next opportuni-
ty. When correcting the tire pressure, add only
the pressure differences shown in the "Ty re
pressure" menu.

98
Controls, Safety, Instruments
Warning “When vehicle stops:
Hit selection”If you drive off after changing a wheel or inflating
the tires and neglect to make a selection in the
screen SELECTION AFTER WARNING, the following
message will appear: WHEN VEHICLE STOPS:
HIT SELECTION
fThe next time you stop the vehicle, perform
the settings in the “Selection after warning”.
Wheel change messageThe WHEEL CHANGE? CHECK SETTINGS
message appears after a wheel change, if the tire
type and tire size of the new tires have not been
set in the TYRE PRESSURE > SETTINGS menu.
When the vehicle is stationary, the display
changes to SELECTION AFTER WARNING.
fPlease observe the chapter “SELECTION
AFTER WARNING” on Page 97.
fSelect WHEEL CHANGE. The menu
automatically changes to TYRE TYPE.
fSelect the appropriate tire type and tire size.
Only if the tire type and size are selected will
the tire pressure monitoring system re-learn
the tires.
Message “Spare wheel or sealing set
operation”The message SPARE WHEEL OR SEALING SET
OPERATION? appears after switching on the
ignition if a spare wheel type (spare wheel,
collapsible spare wheel, or sealing set) was set.
fSelect YES or NO with the rocker switch.
fPress RESET switch.

122
Controls, Safety, Instruments The rain sensor remains switched off if the wiper
lever is already in position 1 when the ignition is
switched on.
To switch the rain sensor on again:
fMove wiper stalk to position 0 and then to
position1 – switching on is confirmed by one
wipe of the windscreen – or
fOperate windscreen washer system 5–
switching on is confirmed by three wipes of the
windscreen – or
fChange the sensitivity of the rain sensor with
four-stage switch A.Changing the sensitivity of the rain sensor
Sensitivity can be set with switch A in 4 stages:
fAdjust switch A upwards –
high sensitivity.
The setting is confirmed by one wipe of the
windshield.
fAdjust switch A downwards –
low sensitivity.
2 – Front windshield wiper – slow
fMove wiper stalk upwards to the second click.
3 – Front windshield wiper – fast
fMove wiper stalk upwards to the third click.
At speeds of less than approx. ca. 2.5 mph
(4 km/h), rain sensor operation mode is automat-
ically activated if the windshield wiper is switched
on. If you exceed a speed of approx. 5 mph
(8 km/h), the system switches to the pre-selected
wiper level.
4 – Front windshield wiper – one-touch oper-
ation
fMove wiper stalk downwards. The front wind-
shield wipers go through one wipe cycle.5 – Front windshield wipers and washer sys-
tem
fPull wiper stalk towards the steering wheel.
The washer system sprays and wipes while the
lever is pulled towards the steering wheel.
When the wiper lever is released, a few drying
wipes are executed.
Headlight washer (on vehicles with Bi-Xe-
non headlights):
The washer sprays only while low beam or high
beam is switched on.
To activate the headlight washer system, the
wiper lever must be pulled for a longer period
of time.
The spray duration is limited.
Maintenance note
fIf heavily soiled, repeat wash.
fPersistent dirt (e.g. insect remains) should be
regularly removed.
Please observe the chapter “CAR CARE IN-
STRUCTIONS” on Page 265.
Thefront windscreen washer nozzles are heat-
ed when the ignition is on, as a precaution against
freezing.