2004 PORSCHE CAYENNE four wheel drive

Air Conditioning, Parking Heater and Heated Rear Window
79
Disabling control panel for
air-conditioned areas at the rearPower windows, central locking buttons on the
rear doors and rear control panel for the air condi-
tioning can be disabled using the safety button in
the armrest of the driver’s door.
fPress the safety button to switch child
protection on and off.
The symbol in the safety button lights up if
child protection is active.fPress button .
The Symbol appears on the display.
The rear air-conditioned areas can be
controlled from the front control panel.
Ending the function
fPress button again.
Note on operation
The function is ended automatically 10 seconds
after the last settings are made.
Rear seat heatingThe rear seats can also be heated in vehicles with
four-zone air conditioning.
fFor further information on the rear seat
heating:
Please see the chapter “REAR SEAT HEATING
IN VEHICLES WITH AN FOUR-ZONE AIR CONDI-
TIONING SYSTEM” on Page 41.
A- Continuous opening and closing
B- Setting vent directionVentsfRotate thumb wheel A upward.
fRotate thumb wheel A downward.
Switching child protection on/off
Controlling rear air-conditioned
areas with the front control panel
Opening vents
Closing vents
10_Cayenne_21_KW17.book Seite 79 Donnerstag, 9. April 2009 3:33 15

Multi-Purpose Display and Instruments
133
fIf a tire pressure message is displayed, correct
the tire pressure at the next opportunity.
fIncomplete entries or selection of the wrong
tires on the multi-purpose display affect
correct indication of warnings and messages.
The settings in the TYRE PRESSURE menu
must be updated after wheel changes, use of
a spare wheel or changes in vehicle loading.
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 on the multi-purpose display.
Correct tire pressure.
Functional description of Tire Pressure
MonitoringTire Pressure Monitoring continuously monitors
tire pressure and tire temperature on all four
wheels and warns the driver when the tire
pressure is too low.The display as well as the settings for Tire
Pressure Monitoring take place on the multi-
purpose display in the sub-menu
TYRE PRESSURE.
However, the tire pressure must still be set
manually on the wheel.
The deviations in the tire pressures from the
required pressures are shown in the sub-menu
TYRE PRESSURE.
Example:
If the tire pressure display shows “–4 psi
(–0.3 bar)”, you must increase the tire pressure by
4 psi (0.3 bar).
The tire pressures to be monitored are fixed in the
Tire Pressure Monitoring system and cannot be
changed.
The following settings must be made to permit
correct monitoring.
–Tires
Select the type and size of the tires fitted on
the vehicle.
–Load
Select the type of loading.
Note on operation
Settings can be made only when the vehicle is
stationary.
fFor information on tires and wheels:
Please see the chapter “TIRES/WHEELS” on
Page 281.
Warning!
Your vehicle has also been equipped with a TPM
malfunction indicator to indicate when the system
is not operating properly.
The TPM malfunction indicator is combined with
the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately one minute and
then remain continuously illuminated. This
sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the
system may not be able to detect or signal low tire
pressure as intended.
TPM malfunctions may occur for a variety of
reasons, including the installation of replacement
or alternate tires or wheels on the vehicle that
prevent the TPM from functioning properly.
Always check the TPM malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or alternate
tires and wheels allow the TPM to continue to
function properly.Warning light
10_Cayenne_21_KW17.book Seite 133 Donnerstag, 9. April 2009 3:33 15

154
Multi-Purpose Display and Instruments
PSM off Porsche Stability Management was switched off.PHC unavailable The Porsche Drive-off Assistant (manual transmission) is not available.Brake booster faulty Greater brake pedal force necessary.
Drive carefully to the nearest authorized Porsche dealer.Chassis sport Current setting of Porsche Active Suspension ManagementChassis normal Current setting of Porsche Active Suspension ManagementChassis comfort Current setting of Porsche Active Suspension ManagementChassis system faulty Handling may be affected. Adapt your speed to the changed conditions. Have the fault remedied at an
authorized Porsche dealer.Warning chassis system The side tilt of the vehicle is significantly greater when cornering. Drive carefully at an appropriate speed
to the nearest authorized Porsche dealer.Warning chassis system Stop at a suitable place. Do not continue driving.
Have the fault remedied at an authorized Porsche dealer.Chassis system faulty Drive carefully to the nearest authorized Porsche dealer.Spare wheel filling Collapsible spare wheel is being filled by level-control compressor. Do not drive off!Regulation switched off Level control has been switched off (to jack up the vehicle).Not permissible The prerequisites for setting the desired level have not been met.Pressure accumulator charging Level control temporarily unavailable.Four-wheel drive system faulty Have the fault remedied at an authorized Porsche dealer.
Light on
instrument
panel
Warning message on the multi-purpose
displayMeaning/measures
10_Cayenne_21_KW17.book Seite 154 Donnerstag, 9. April 2009 3:33 15

182
Driving and Driving Safety
Warning!
In spite of the advantages of PTM or four-wheel dri-
ve, it is still the driver’s responsibility to adapt her/
his driving style and maneuvers in line with road
and weather conditions, as well as the traffic situ-
ation.
The increased safety that is provided should not
induce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with PTM or four-wheel drive.
Risks of accident due to inappropriate speed
cannot be reduced by PTM.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
axles. The system realizes this optimal traction by
intervening 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
stability 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
sportier setup of the running gear.
– The TCS and ABD provide even better traction
for all wheels.
Full-time all-wheel drive
With the four-wheel drive, the drive power is
variably distributed to the front and rear wheels.
Power distribution and wheel speed compensation
between the front and rear axles is realized with a
transfer box.
Distribution of the drive power depends on the
wheel speed difference between the two axles.
The transfer box always controls power distribu-
tion in such a way that optimal propulsion is achie-
ved, even on an unfavorable road surface.
Full-time four-wheel drive ensures optimal handling
and greater stability.Automatic brake differential (ABD)
The ABD system controls the front and rear axles
separately. If one wheel of an axle starts to spin,
it is braked so that the other wheel on the same
axle can be driven.
The ABD recognizes different driving states, and it
features control strategies adapted to these
states. In situations in which little propulsive power
is required, such as when the car moves off on a
level gravel surface, traction control already
becomes active at low engine speeds. If great
propulsive power is required, e.g. when moving off
on an uphill slope or for rapid acceleration, the
ABD is adapted accordingly.
A special off-road program is used in Low Range
mode.
Traction control system (TCS)
The traction control system prevents the wheels
from spinning by adjusting the engine power,
thereby ensuring good lane-holding ability and a
stable driving behavior.10_Cayenne_21_KW17.book Seite 182 Donnerstag, 9. April 2009 3:33 15

Driving and Driving Safety
189
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 gas pedal is not used when
traveling downhill, the Porsche Down-Hill Assistant
is active and brakes the vehicle.
If road grip is lost on one or more wheels, the
system brakes the wheels which have good road
contact.
The braking ability of the Engine Braking Support
is affected by slippery surfaces (e.g., on icy or
loose surfaces), like all brakes.
Warning!
Risk of accident, resulting in serious perso-
nal injury or death. Reduced braking ability
on a slippery surface.
fAlways adjust your driving style to the driving situation.
Conditions:
– The gas pedal must not be used when
travelling downhill.
– The speed must not exceed 12 mph
(20 km/h).–Vehicles with Tiptronic S:
The Tiptronic selector lever position D, M or R
must be engaged.
–Vehicles with manual transmission:
The reverse gear or any other gear (1. - 6. )
must be engaged. The clutch pedal must not
be used when travelling downhill.
Tip on driving
The Porsche Down-Hill Assistant is active when
driving downhill either forwards or backwards.
Checks on test standsBrake 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 Tiptronic selector lever in position N or the
gearshift lever in neutral.Balancing wheels on the vehicle
During finish balancing of the wheels, the entire
vehicle must be lifted and the wheels must be free
to turn.
Dynamometer testing procedure Some U.S. states and Canadian provinces con-
duct emissions inspection/maintenance testing
involving the use of two-wheel dynamometer.
A two-wheeled dynamometer is a treadmill type
device upon which a single axle of the car, the dri-
ving axle of the vehicle, rotates to simulate vehicle
operation on the road while the vehicle remains
stationary.
Your Porsche Cayenne has a full-time four-wheel
drive system which cannot be disabled. Severe
d a m a g e t o t h e p o w e r t r a i n c a n re s u l t i f t e s t e d o n a
two-wheel dynamometer.
Warning!
To avoid severe powertrain damage and a
possible unexpected movement of the vehic-
le.
fYour Porsche Cayenne vehicle must never be
tested on a two-wheel dynamometer.
fAdvise the emission station of this warning before testing the vehicle.
10_Cayenne_21_KW17.book Seite 189 Donnerstag, 9. April 2009 3:33 15

Minor Repairs
289
Snow chains
Warning!
Risk of damage to body, axle or brake com-
ponents.
fUse only the fine-link snow chains recommen-
ded and authorized by Porsche so that
sufficient clearance between the wheel well
and the chain is assured.
fPlease see the chapter “TIRES, RIMS, TRACKS”
on Page 350.
fFollow instructions issued by the supplier of the chains.
The best possible handling characteristics are
achieved when snow chains are fitted on all four
wheels of the vehicle. However, it is also possible
to fit snow chains on only one axle (preferably the
rear axle).
fRemove spacers if 18 inch tires, snow chains
or a collapsible spare wheel are mounted.
Caution!
Risk of damage to wheel housings if the
spacers on the rear axle are not removed
before fitting the snow chains.
f17 mm spacers must always be removed from the rear axle when snow chains are to be fitted.
fFor information on the spacers:
Please see the chapter “SPACERS” on
Page 293.
Please see the chapter “CHANGING A WHEEL
WITH REMOVAL OF 17 MM SPACER” on
Page 303.
fBefore fitting chains, remove accumulated ice
and snow from the wheel well.
fVehicles with snow chains must not be driven
faster than 30 mph (50 km/h).
Different states and countries have varying statu-
tory requirements regarding maximum speed.
fCheck with local authorities for possible
restrictions.
fRemove chains as soon as the roads are free
of ice and snow.
10_Cayenne_21_KW17.book Seite 289 Donnerstag, 9. April 2009 3:33 15

Index
367
Emergency unlocking
Of the filler flap
.............................................. 267
Spare wheel bracket
....................................... 311
Emission control (check engine)
Functional description
..................................... 123
Warning light on the tachometer
....................... 123
Emission Control System
.......................................... 263
Engaging the rear differential lock
.............................. 178
Engine
Break in hints
.................................................... 6
Cooling system
.............................................. 122
Data
............................................................ 349
Idling
........................................................... 171
Starting
........................................................ 160
Stopping
...................................................... 161
Engine Braking Support
(assistance when driving downhill)
.............................. 189
Engine drag torque control (MSR)
Functional description
..................................... 184
Engine oil
.............................................................. 251Change
........................................................ 253
Change quantity
............................................. 359
Checking oil level with oil dipstick
...................... 252
Choosing the right oil
...................................... 253
Consumption
................................................. 349
Dipstick
........................................................ 253
Engine oil pressure
......................................... 153
Filler opening
................................................. 254
General information
........................................ 253
Level
........................................................... 252
Oil-level warning on the multi-purpose display
...... 252
Recommendation
........................................... 253
Temperature gage
......................................... 120
Topping up
................................................... 254
Engine oil level
....................................................... 252
Checking
...................................................... 252
Entry & Drive
Locking vehicle door with Porsche Entry & Drive
.... 21
Opening/closing Panorama roof system
with car key
.................................................... 99
Unlocking vehicle door with Porsche Entry & Drive
.20
Entry aid
Functional description
....................................... 39
Switching on/off
.............................................. 39
Error messages
Displaying
..................................................... 130
Overview of warning messages
on the multi-purpose display
............................. 149
Exhaust gas
Monitoring warning light
........................ 117
, 119
Exhaust pipes
............................................................. 3
Stainless steel tailpipes, care instructions
........... 276
Exit aid
Functional description
....................................... 39
Switching on/off
.............................................. 39
External audio source, interface
................................. 221
FFabric linings, care instructions
................................. 277
Factory settings
Resetting multi-purpose display
......................... 148
Faults
After charging the battery
................................ 325
Emergency operation of automatic rear lid
........... 26
Emergency operation of ignition key
in ignition lock
............................................... 159
Emergency operation of rear lid
.......................... 31
Emergency operation of sliding/lifting roof
............ 94
Emergency operation
of the Panorama roof system
........................... 101
Emergency operation of the spare wheel bracket
.311
Emergency operation of Tiptronic selector lever
.. 175
Emergency unlocking of the filler flap
................. 267
Overview of warning messages
on the multi-purpose display
............................. 149
Panorama roof system
...................................... 99
ParkAssist
.................................................... 240
Parking heater
................................................. 85
Power windows
................................................ 90
Sliding/lifting roof
............................................. 94
When opening and closing
................................. 31
Filler flap
............................................................... 267Emergency unlocking
...................................... 267
Filling pressure
Plate location
................................................ 348
Reducing
............................................ 307
, 308
Tires (bar/psi)
............................................... 354
Warning light on speedometer
.......................... 141
Warning message on multi-purpose display
......... 151
Filter
Air cleaner maintenance instructions
.................. 260
Particle filter maintenance instructions
............... 260
Fire extinguisher
....................................................... 40
Floor mats, care instructions
..................................... 277
Fluids and fuels
Brake fluid
....................................................359
Coolant
........................................................359
Engine oil
......................................................359
Fuel
.............................................................359
Hydraulic fluid for power steering
......................259
Overview
......................................................359
Washer fluid
..................................................359
Folding key bit in/out
.................................................16
Folding wedges to prevent rolling
...............................296
Footbrake
..............................................................163
Warning light
.................................................164
Footwell lightning
Dimming
.......................................................109
Four-wheel drive
Functional description
.....................................182
Warning message on multi-purpose display
.........154
Four-zone air conditioning
Air-conditioning sensors
.....................................76
Controlling rear air-conditioned areas
with the front control panel
................................79
Defrosting windshield
........................................75
Disabling control panel (rear)
..............................79
Disabling control panel for air-conditioned areas
at the rear
.......................................................79
Operating overview, front
...................................75
Operating overview, rear
...................................76
REST mode
.....................................................65
Setting air distribution
.......................................77
Setting air quantity
...........................................77
Setting temperature
..........................................77
Switching ECON mode on/off
.............................65
Switching Mono function on/off
...........................78
Switching on automatic recirculating-air mode
.......78
Switching on recirculating-air mode
.....................78
Using engine residual heat
.................................65
Fresh-air intake
.........................................................80
Front seat
Adjusting
........................................................36
Drawer under the right front seat
......................225
Passenger mirror as parking aid
.........................38
Recalling settings (memory)
...............................37
Storing driver’s seat settings (memory)
................38
Storing passenger’s seat settings (memory)
..........38
Front seat with memory
..............................................37
Storing door mirror settings
...............................56
Front seats
..............................................................34
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