2005 PORSCHE CAYENNE TURBO ignition

Shifting Gear, Traction Systems
219
Engine Braking Support
(Assistance when heading downhill)The Porsche Down-Hill Assistant is an assistance
system which helps the driver at slower downhill
driving up to approx. 12 mph (20 km/h), e.g., on
steep slopes or on wintry mountain roads.
As long as the accelerator pedal is not used when
traveling downhill, the Porsche Down-Hill Assistant
is active and brakes the vehicle.
The braking ability of the Engine Braking Support
is affected by slippery surfaces (e.g., on icy or
loose surfaces), like all brakes.
If road grip is lost on one or more wheels, the
system brakes the wheels which have good road
contact.
Warning!
Risk of accident. Reduced braking ability on
a slippery surface.
fAlways adjust your driving style to the driving situationConditions:
– The accelerator pedal must not be used when
travelling downhill.
– The speed must not
exceed 12 mph (20 km/h).
– The selector lever position D or Mmust be
engaged.
Tip on driving
The Porsche Down-Hill Assistant is active when dri-
ving downhill either forwards or backwards.
Checks on test standsPower measurement
Power measurements on roller test stands are not
approved by Porsche.
Brake tests
Brake tests must be carried out only in High Range
and on plate-type test stands or roller test stands.
The following limit values must not be exceeded
on roller test stands:
– Testing speed 4.7 mph (7.5 km/h)
– Test duration 20 seconds
Parking brake test
Parking brake tests on the brake tester must be
performed only with the ignition switched off and
the selector lever in position N.
Balancing wheels on the vehicle
During finish balancing of the wheels, the entire ve-
hicle must be lifted and the wheels must be free to
turn.

Shifting Gear, Traction Systems
229
Loading level
Caution!
Risk of damage to running-gear parts, units
and the vehicle underbody.
If the car is driven off a curb when at loading level,
for example, insufficent ground clearance can
cause it to bottom out.
fAlways switch to normal level before moving off.
This setting makes it easier for you to load the lug-
gage compartment.
The vehicle is lowered by around 2.4 in. or 60 mm
compared to normal level.
The car is automatically raised to normal level at
speeds exceeding around 3 mph (5 km/h).
Setting level manuallyPreconditions
–Ignition on.
– Doors are closed.
Setting
fMove rocker switch in the appropriate direc-
tion.
This sets the next possible height.
Indication of selected level
The corresponding light-emitting diode beside the
rocker switch flashes during the control process.
The light-emitting diode is continuously lit after the
control process.
The level change is also indicated on the multi-pur-
pose display of the instrument panel.
Exceptions
Automatic changes from normal level to low level
and back are not indicated on the multi-purpose
display of the instrument panel.
Note on operation
The level selected last is stored in memory after
the ignition is switched off.Raising the vehicle
1st actuation: Terrain level
2nd actuation: Special terrain level
f f f

230
Shifting Gear, Traction Systems Lowering the vehicle
1st actuation: Low level
2nd actuation: Loading level
Warning messageVarious messages are indicated on the multi-pur-
pose display of the instrument panel if there is a
system fault or if the compressor switches off due
to overload.fPlease observe the chapter “WARNING LIGHTS
AND WARNING MESSAGES” on Page 106.
fAdapt your driving behavior to the changed
conditions.
fConsult an authorized Porsche dealer in order
to remedy a system fault.
fIf the overload-protection function causes the
compressor to switch off, wait for a time until
it has cooled down. The system will function
again as soon as it has cooled sufficiently.
The warning message appears when the control
system is switched off and when the collapsible
spare wheel is being filled. This does not indicate
a fault.
The warning message will go out once these pro-
cedures have been completed.
Raising vehicle with the jackWhenever it is necessary to jack up the vehicle:
fManually set normal level and then switch off
level control.
Switching off level control
1. Switch ignition on.
2. Push rocker switch forward for 5 to
10 seconds.
A message is shown on the multi-purpose
display of the instrument panel.
The vehicle can now be raised.
Switching level control back on
1. Switch ignition on.
2. Push rocker switch forward for 5 to
10 seconds or
3. Drive forward with the vehicle.
Level control switches on automatically.Transporting the vehicles on car trains,
ferries and car transportersfTie the vehicle down only at its wheels.

Shifting Gear, Traction Systems
231
Porsche Active Suspension
Management (PASM)Various messages are shown on the multi-purpose
display of the instrument panel.
Three different running-gear setups can be select-
ed with the push of a button:
–Comfort
–Normal
–Sport
If the running-gear setups “comfort” or “normal”
have been selected, the system automatically
changes the setup to “sport” when the car is driv-
en in a sporty manner.
Indication of the selected running-gear
setupThe light-emitting diode in the button of the select-
ed running-gear setup is lit.
In addition, the selected running-gear setup is indi-
cated on the multi-purpose display of the instru-
ment panel for around 12 seconds.Warning messageIf there is a system fault a warning message is
shown on the multi-purpose display of the instru-
ment panel.
fAdapt your driving style to the changed condi-
tions.
fTo remedy the fault, consult an authorized
Porsche dealer.
Selecting the running-gear setup1. Switch ignition on.
2. Press the appropriate button.
Note on operation
The running-gear setup selected last is stored in
memory after the ignition is switched off.

234
Maintenance, Car Care
Exercise Extreme Caution when
Working on your Vehicle
Danger!
Ignoring the following instructions may
cause serious personal injury or death.
fThe engine compartment of any motor vehicle
is a potentially hazardous area. If you are not
fully familiar with proper repair procedures, do
not attempt the adjustments described on the
following pages.
This caution applies to the entire vehicle.
fO n l y w o r k o n y o u r v e h i c l e o u t d o o r s o r i n a w e l l
ventilated area.
fEnsure that there are no open flames in the
area of your vehicle at any time when fuel
fumes might be present. Be especially cau-
tious of such devices such as hot water heat-
ers which ignite a flame intermittently.
fBefore working on any part in the engine com-
partment, turn the engine off and let it cool
down sufficiently. Hot engine compartment
components can burn skin on contact.
fBe alert and cautious around engine at all
times while the engine is running.
If work has to be performed with the engine
running, always set the parking brake, and
make sure the selector lever is in position “P“
or “N“.fIn particular, be very careful to ensure that
items of clothing (ties, shirt, sleeves etc.), jew-
elry, long hair, hand or fingers cannot get
caught in the fan, belts or other moving parts.
The radiator and radiator fans are in the front
of the car.
The fans can start or continue running as a
function of temperature, even with the engine
switched off.
Carry out work in these areas only with the en-
gine off and exercise extreme caution.
fYour Porsche is equipped with an electronic ig-
nition system. When the ignition is on, high volt-
age is present in all wires connected with the
ignition system; therefore, exercise extreme
caution when working on any part of the engine
while the ignition is on or the engine is running.
fAlways support your car with safety stands if it
is necessary to work under the car. The jack
supplied with the car is not adequate for this
purpose.
fWhen working under the car without safety
stands but with the wheels on the ground,
make sure the car is on level ground, the
wheels are blocked, and that the engine can-
not be started.
Withdraw ignition keys (switch ignition off in ve-
hicles that have Porsche Entry & Drive).
fDo not smoke or allow an open flame around
the battery or fuel.
Keep a fire extinguisher in close reach.fIncomplete or improper servicing may cause
problems in the operation of the car. If in doubt
about any servicing, have it done by your au-
thorized Porsche dealer.
Improper maintenance during the warranty pe-
riod may affect your Porsche warranty cove-
rage.
fSupplies of fluids, e.g. engine oil, washer fluid,
brake fluid or coolant, are hazardous to your
health.
Keep these fluids out of children's reach and
dispose of them in accordance with the appro-
priate regulations.
fSome countries require additional tools and
special spare parts to be carried.
Please make enquiries before driving abroad.
Power measurementsPower measurements on dynamometers are not
approved by Porsche.

246
Maintenance, Car Care
Wiper BladesfWhen wiper performance deteriorates, replace
the wiper blades in good time.
fPlease observe the chapter “CAR CARE IN-
STRUCTIONS” on Page 256.
Caution!
Risk of damage if wiper arm accidentally
falls back onto the windshield.
fAlways hold the wiper arm securely when re-
placing the wiper blade.
Risk of damage if wiper blades that are
frozen in place are loosened improperly.
fThaw the wiper blades before loosening them.
Maintenance note
If the wiper blades rub or squeak, this can be as a
result of the following:
– If the vehicle is washed in an automatic car
wash, residues may adhere to the windshield.
These residues can only be removed using a
special cleaning solution.
Please contact your authorized Porsche dealer
for further information.
– The wiper blades may be damaged or worn.
fReplace wiper blades as soon as possible.
Replacing windshield wiper blades
Caution!
Risk of damage.
If the wiper blades are not changed properly,
they can come loose when the car is moving.
fCheck whether the wiper blades are seated se-
curely.
The wiper blade must be pushed onto the wip-er arm up to the stop.
1. Apply the parking brake.
2. Switch the windshield wipers off (position 0).
3. Switch ignition off.
4. Fold windshield wiper arm away from the wind-
shield.
5. Lift up wiper blade completely (arrow).

248
Maintenance, Car Care
Changing rear window wiper blade
Caution!
Risk of damage if the rear wiper is frozen in
place and is loosened improperly.
fThaw the wiper blade before loosening them.
fGrasp the wiper arm with both hands and separate it from the window.1. Apply the parking brake.
2. Switch ignition off.
3. Carefully fold the wiper arm away from the rear
window until it reaches its locking position
(approx. 60°).
4. Carefully unclip the wiper blade from the wiper
arm (arrow). Hold the wiper arm with your
other hand when doing this.
5. Push the new wiper blade onto the center of
the wiper arm and snap it into place.
6. Carefully fold wiper arm back on to the rear
window.

250
Maintenance, Car Care
Fuel
Warning!
Fuel is highly flammable and harmful to
health.
fFire, open flame and smoking are prohibited
when handling fuel.
fAvoid contact with skin or clothing.
fDo not inhale fuel vapours.
To prevent damage to the emission control
system and engine:
fNever drive the tank completely out of fuel.
fAvoid high cornering speeds after the warning lights have come on.
fPlease observe the chapter “HOW EMISSION
CONTROL WORKS” on Page 255.
fPlease observe the chapter “LEVEL GAUGE”
on Page 74.
To avoid permanent damage to the functionality of
the catalytic converters and oxygen sensors, use
only unleaded fuel.
The engine is designed to provide optimum
performance and fuel consumption if unleaded
premium fuel with 98 RON/88 MON is used.
If unleaded premium fuels with octane numbers of
at least 95 RON/85 MON are used, the en-
gine's knock control automatically adapts the igni-
tion timing.
Filler flapThe filler flap is located in the rear right wing and
is electrically opened with pull-button A in the driv-
er's door.
The pull-button is also ready for operation when
the ignition is switched off.
Fuel quality labelOpening
fOperate pull-button A in the driver's door.
The filler flap pops open.
Closing
fClose the filler flap until it clicks shut.