2005 PORSCHE CAYENNE TURBO power steering

Controls, Safety, Instruments
11 Controls, Safety, Instruments
Porsche and the Environment .......................... 4
Never invite car theft! .................................... 16
Keys ............................................................ 17
Central Locking System ................................ 21
Porsche Entry & Drive ................................... 24
Doors .......................................................... 26
Alarm System, Ultrasound Passenger Compart-
ment Monitoring System, Inclination Sensor .... 27
Power Windows ............................................ 29
Front seats................................................... 32
Front seat with memory................................. 33
Easy Entry Function ...................................... 35
Headrests .................................................... 36
Rear Seats ................................................... 37
Heated Seats – Front and Rear ...................... 40
Safety Belts.................................................. 42
Child Restraint Anchorages ............................ 46
Child Restraint Systems ................................ 47
Airbag Systems ............................................ 49
Steering Wheel ............................................. 51
Multi-Functional Steering Wheel ...................... 53
Interior Mirror ............................................... 55
Door Mirrors................................................. 55
Automatic Anti-Dazzle Mirror .......................... 57
Ignition Lock/Steering Lock ........................... 58
Starting and Stopping the Engine ................... 60
Parking Brake ............................................... 62
Brakes ......................................................... 63
Instrument Panel USA Models ........................ 68
Instrument Panel Canada Models.................... 70
Oil Temperature Gauge ................................. 72
Speedometer ............................................... 72Cooling System ............................................ 73
Fuel ............................................................. 74
Odometer..................................................... 75
Emission Control........................................... 76
Multi-Purpose Display .................................... 78
Warning Lights and Warning Messages ......... 106
Light Switch ............................................... 114
Instrument Illumination ................................. 116
Automatic Headlight Beam Adjustment ......... 116
Turn signal/High Beam/
Headlight Flasher Stalk ................................ 117
Emergency warning lights............................ 118
Windshield Wiper/Washer Stalk .................... 119
Cruise Control ............................................ 122
Vents ......................................................... 125
Fresh-air intake ........................................... 125
Heated Rear Window ................................... 126
Automatically Controlled
Two-Zone Air Conditioning ........................... 127
Automatically Controlled
Four-Zone Air Conditioning ........................... 131
Parking Heater............................................ 137
Sun Visors .................................................. 142
Sun Blinds, Rear Side Windows .................... 143
Interior Lighting .......................................... 144
Door-Surrounding Lighting ........................... 146
Coming Home Function (Off Delay) ............... 146
Sliding/Lifting Roof ..................................... 147
Parking Aids ............................................... 157
Garage Door Opener ................................... 162
Ashtray ...................................................... 165
Cigarette Lighter......................................... 166Car Audio Operation/Tips ............................ 167
Porsche Communication
Management (PCM) ..................................... 170
Fire Extinguisher ......................................... 171
Storage...................................................... 172
Cupholder .................................................. 176
Rear Lid ..................................................... 178
Rear Window .............................................. 180
Engine Compartment Lid ............................. 180
Loadspace ................................................. 182
Luggage Compartment Cover ...................... 183
Luggage Safety Net ....................................185
Ski Bag ...................................................... 187
Roof Transport System................................ 189
Trailer Coupling .......................................... 190
Loading Information ....................................191

Controls, Safety, Instruments
15
1 Filler flap release
2 Rear lid release
3 Power windows
4 Inner door handle
5 Door mirror adjustment
6 Engine compartment lid release
7 Parking brake
8 Diagnostic socket
9 Parking brake release
10 Ignition lock/steering lock
11 Steering wheel adjustment
12 Seat adjustment
13 Instrument lighting knob
14 Light switch
15 Turn signal/high, low beam/headlight flasher
stalk
16 Operating lever for cruise control
17 Rocker switches for Tiptronic
18 Horn
19 Hazard warning light switch
20 Glove compartment

16
Controls, Safety, Instruments
Never invite car theft!An unlocked car with the key in the ignition lock in-
vites car theft.
A steering wheel lock and a gong alarm are stan-
dard equipment in your Porsche. The gong alarm
will sound if you open the driver's door while the
key is still in the ignition lock. It is your reminder to
pull the key out of the ignition lock and to lock the
doors.
Warning!
Any uncontrolled movement of the vehicle
may result in serious personal injury and
property damage.
Never leave your vehicle unattended with the
key in the ignition lock, especially if children
and/or pets are left unattended in the vehi-
cle. They can operate power windows and
other controls. If the engine is left running,
they may accidentally engage the shift lever.
fAlways remove the ignition key.
fAlways set the parking brake.
fLock the doors with the key or with the remote control.
Warning!
Risk of a serious accident.
The steering column will lock when you re-
move the key while you are driving or as the
car is rolling to a stop. You will not be able to
steer the car.
fNever remove the key from the steering lock while you are driving.To protect your vehicle and your possessions
from theft, you should always proceed as fol-
lows when leaving your vehicle:
fClose windows.
fClose sliding/lifting roof or Panorama Roof
System.
fRemove ignition key (switch ignition off in vehi-
cles that have Porsche Entry & Drive).
fEngage steering lock.
fLock storage tray between the front seats and
glove compartment.
fRemove valuables (e.g. car documents, radio
control module, telephone, house keys) from
the car.
fLock doors.
fLock the glove compartment.
fClose oddment trays.
fCover luggage compartment with the luggage
compartment cover.
fClose rear lid and rear window.

Controls, Safety, Instruments
77
Battery/generatorA warning message will appear on the multi-pur-
pose display of the instrument panel if the voltage
drops significantly.
fStop in a safe place and switch off the engine.
Possible causes
– Defect in the battery charging system
–Broken drive belt
Warning!
Risk of accident and risk of engine damage.
A broken drive belt means there is no power
assistance to the steering (more effort is re-
quired to steer) and engine cooling fails.
fDo not continue driving.
fHave the fault remedied at your nearest autho-
rized Porsche dealer.
Danger of steering assistance failing during
a long journey in the water if the drive belt
slips.
fIf the steering assistance fails, more effort will be required to steer.

Controls, Safety, Instruments
169
Car Telephone and Aftermarket Alarms Important legal and safety information re-
garding the use of cellular telephones
Some states may prohibit the use of cellular tele-
phones while driving a vehicle. Check the laws and
regulations on the use of cellular telephones in the
areas where you drive.
Danger!
Risk of an accident.
Severe personal injury or death can result in
the event of an accident.
Looking away from the road or turning your
attention away from your driving can cause
an accident and serious personal injury or
death.
When using your cellular telephone, you should al-
ways:
fGive full attention to your driving - pull off the
road and park before making or answering a
call if traffic conditions so require; and
fKeep both hands on the steering wheel - use
hands-free operation (if available) - pull off the
road and park before using a hand-held tele-phone.It is essential to observe the instructions of
the telephone manufacturer before putting
the telephone into operation.
Any portable telephone or radio transmitter which
is used in a Porsche must be properly installed in
accordance with the technical requirements of
Porsche.
The transmission power must not exceed
10 W.
The devices must possess a type approval for
your vehicle and have an “e“ symbol.
If you should require equipment with transmission
power values greater than 10 W, please consult
your authorized Porsche dealer for this purpose.
He is familiar with the technical requirements for
installing devices of this kind.
The antennas for all radios and telephones with a
transmitting antenna must be externally mounted.
The improper installation of radios or telephones
or use of a radio or telephone with a transmitting
antenna inside the car may cause the warning
lights to come on.
Improper installation of such equipment can cre-
ate a discharged battery or excessive current
draw from added equipment.If aftermarket systems are installed by non-dealer-
ship technicians or outside the selling dealer,
problems may result. Installation of aftermarket
equipment is not covered under the New Car War-
ranty.
fConsult your authorized Porsche dealer about
the installation of non Porsche approved equip-
ment.
Reception quality
The reception quality of your car telephone will
change constantly when you are driving. Interfer-
ence caused by buildings, landscape and weather
is unavoidable. It may become particularly difficult
to hear when using the hands-free function due to
external noise such as engine and wind noise.
Automatic car-wash
fUnscrew external antennas before using an au-
tomatic car-wash.

212
Shifting Gear, Traction Systems
Porsche Traction Management (PTM)Porsche Traction Management is a full-time all-
wheel control system designed to influence the
longitudinal and lateral dynamics. It is closely
linked with the Porsche Stability Management
(PSM) system:
PTM ensures the best possible power distribution
to the four driven wheels at the front and rear ax-
les. The system realises this optimal traction by in-
tervening in the lock control function of the trans-
fer case and rear differential. PTM is active at all
times and, unlike the PSM, cannot be switched off.Advantages of PTM
– Obvious improvement in traction, driving stabil-
ity and steering ability of the car.
– Vehicle is more manageable when driven at its
performance limits.
– Improved straight-ahead tracking and stability.
– The aforementioned features allow for a sport-
ier setup of the running gear.
– The TCS and ABD provide even better traction
for all wheels.
Caution!
In spite of the advantages of PTM, it is still the driv-
er’s responsibility to adapt his driving style and
maneuvres in line with road and weather condi-
tions, as well as the traffic situation.
The increased safety that is provided should not in-
duce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with PTM.
Risks of accident due to inappropriate speed
cannot be reduced by PTM.

214
Shifting Gear, Traction Systems
Porsche Stability Management (PSM)PSM is an active control system for stabilisation of
the vehicle during extreme driving maneuvres. It
operates together with the Porsche Traction
Management (PTM) system.
PSM makes use of both the ABD and TCS sys-
tems, as well as the known functions of the anti-
lock brake system (ABS) and engine drag torque
control system (MSR).
Caution!
In spite of the advantages of PSM, it is still the driv-
er’s responsibility to adapt his driving style and
maneuvres in line with road and weather condi-
tions, as well as the traffic situation.
The increased safety that is provided should not in-
duce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with PSM.
Risks of accident due to inappropriate speed
cannot be reduced by PSM.Advantages of PSM
– Best possible traction and lane-holding ability
in all driving situations – even on road surfaces
with varying friction.
– The system compensates for undesired vehi-
cle reactions (Ferraria effect) when the driver
releases the accelerator pedal or brakes on
bends. This compensation functions up to the
maximum lateral acceleration.
– PSM actively stabilises the vehicle in the event
of under and oversteering during dynamic
driving maneuvres (e.g. rapid steering move-
ments, during lane changes or on alternating
bends).
– Improved braking stability on bends and on dif-
ferent or varying road surfaces.Readiness for operation
PSM is switched on automatically every time you
start the engine.
Function
Sensors at the wheels, brakes, steering system
and engine continuously measure:
–Driving speed
– Direction of travel
– Lateral acceleration
– Longitudinal acceleration
– Rate of turn about the vertical axis
PSM uses these values to determine the direction
of travel desired by the driver.
PSM intervenes and corrects the course if the ac-
tual direction of motion deviates from the desired
course (steering-wheel position):
It brakes individual wheels as needed. If neces-
sary, PSM additionally influences the engine power
or the gear-changing characteristic of the Tiptron-
ic in order to stabilise the vehicle.

Shifting Gear, Traction Systems
215
The events below inform the driver of PSM control
operations and warn him to adapt his driving style
to the road conditions:
– The information light in the instrument panel
lights up.
– Hydraulic noises can be heard.
– The vehicle decelerates and steering-wheel
forces are altered as the PSM controls the
brakes.
– Reduced engine power.
– The brake pedal pulsates and its position is
changed during braking.
However, it is possible at any time to achieve
full vehicle deceleration by increasing the foot
pressure slightly.
Examples of PSM control operations
–Vehicle understeers:
If the front wheels of the vehicle drift on a
bend, engine power is reduced and the rear
wheel on the inside of the bend is braked if
necessary.
–Vehicle oversteers:
If the rear of the vehicle swings out on a bend,
the front wheel on the outside of the bend is
braked.Combined use of PSM and PTM/PTM Plus
In order to ensure optimal stabilisation of the
vehicle, the center differential lock (PTM) and
possibly the rear differential lock (PTM Plus) are
also opened when PSM interventions occur.
Tip on driving
When PSM is switched off, wheel-specific brake
interventions and the traction control system
(TCS) are also inactive.
The automatic brake differential (ABD) remains on.Off-road PSM
(PSM in Low Range program)
When Low Range is active, an off-road PSM
specially matched to off-road driving is activated
to enhance traction.
At a speed below 22 mph (35 km/h), the terrain
PSM intervenes later if the vehicle should under-
steer and thereby improves steerability in Low
Range.
If the brakes are highly stressed, the automatic
brake differential (ABD) switches itself off to
protect the brakes. It remains deactivated until the
brake system has cooled sufficiently.
Engine drag torque control
In conditions of excessive slip, the engine drag
torque control system prevents all driven wheels
from locking up when the car is overrunning. This
is also the case for downshifts on a slippery road.