2005 PORSCHE CAYENNE TURBO ABS

68
Controls, Safety, Instruments
Instrument Panel USA ModelsWarning and indicator lights on the
tachometerWarning and indicator lights on the
speedometer
A Oil temperature gauge
BTachometer
C Clock reset button
D Cooling system temperature gauge
E Multi-purpose display
F Digital speedometer,
Outside temperature,
Clock,
Mileage displays
G Fuel gauge
H Reset button for trip counter display
I Speedometer
J Engine boost pressure display Emission Control warning light
(Check Engine)
Airbag warning light
Safety belt warning light
PSM warning light
ABS warning light
Turn signal pilot light, left
Cruise control readiness
Hydraullically engageable anti-roll bars
Rear fog light indicator light
Turn signal pilot light, right
Trailer turn signal Indicator light
Differential locking indicator light
Brake warning light
Fog light indicator light
Tire pressure warning light
High beam indicator light

70
Controls, Safety, Instruments
Instrument Panel Canada ModelsWarning and indicator lights on the
tachometerWarning and indicator lights on the
speedometer
A Oil temperature gauge
BTachometer
C Clock reset button
D Cooling system temperature gauge
E Multi-purpose display
F Digital speedometer,
Outside temperature,
Clock,
Mileage displays
G Fuel gauge
H Reset button for trip counter display
I Speedometer
J Engine boost pressure display Emission Control warning light
(Check Engine)
Airbag warning light
Safety belt warning light
PSM warning light
ABS warning light
Turn signal pilot light, left
Cruise control readiness
Hydraullically engageable anti-roll bars
Rear fog light indicator light
Turn signal pilot light, right
Trailer turn signal Indicator light
Differential locking indicator light
Brake warning light
Fog light indicator light
Tire pressure warning light
High beam indicator light

110
Controls, Safety, Instruments
Brake pads – Workshop Have the brake pads replaced at an authorized Porsche dealer
without delay.
Warning – Brake circuit division Stop immediately in a suitable place. Do not continue driving.
Have the fault remedied at an authorized Porsche dealer.
ABS failure – WorkshopDrive carefully. Have the fault remedied at an authorized
Porsche dealer.
PSM failure – WorkshopDrive carefully. Have the fault remedied at an authorized
Porsche dealer.
Warning – Brake fluid level Stop immediately in a suitable place. Do not continue driving.
Have the fault remedied at an authorized Porsche dealer.
Parking brake Parking brake not released.
PSM onPorsche Stability Management was switched on.
PSM offPorsche Stability Management was switched off.
PHC failure The Hillholder and the Porsche Down-Hill Assistant are not avail-
able.
Brake booster faulty Greater braking pedal force necessary. Drive carefully to the
nearest authorized Porsche dealer.
Sport shock absorber Current setting of Porsche Active Suspension Management.
Normal shock absorber Current setting of Porsche Active Suspension Management.
Comfort shock absorber Current setting of Porsche Active Suspension Management.
Warning – Air suspension Stop in a suitable place. Do not continue driving.
Have the fault remedied at an authorized Porsche dealer.
Air suspension faulty – Workshop Drive carefully to the nearest authorized Porsche dealer.
Instrument
panelMulti-purpose
displayText display Meaning/measures

Controls, Safety, Instruments
115
Automatic driving light assistantThe driving light assistant is a comfort function.
Your Porsche’s driving light (low beam) is switched
on and off automatically, irrespective of the ambi-
ent brightness.
Despite possible support by the driving light assis-
tant, it is the responsibility of the driver to switch
on the driving light using the conventional light
switch in accordance with the relevant national
regulations.
Activating the headlights using the driving light as-
sistant does not therefore absolve the driver
of responsibility for the correct operation of the
driving light.
The low beam is switched on automatically in the
following situations:
–Dusk
–Darkness
– Travelling through tunnels
– Rain
– Highway driving
Note on operation
Fog is not recognised.
fIn the event of fog, the driving light must be
switched on manually.
Warning!
Risk of accident due to driving without lights.
fAlways carefully monitor the automatic driving light control.
Highway function
The light is switched on at speeds of over 87 mph
(140 km/h). If you are travelling slower than 40
mph (65 km/h), the driving light is switched off af-
ter a delay of approx. 2 minutes, if the external
lighting conditions permit.
Rain function
The driving light is switched on after five seconds
of continuous wiper operation.
The driving light is switched off approx. 4 minutes
after the wipers have stopped.
Bi-Xenon main headlights with
dynamically controlled cornering lightThe Bi-Xenon main headlights are equipped with
an additional light in vehicles with a cornering
light. As a result of its particular positioning, the
additional light provides significantly better lane
lighting to the left and right of the main light beam.

160
Controls, Safety, Instruments Limits of ultrasonic measurement
– ParkAssist cannot detect sound-absorbing ob-
stacles (e.g. powder snow),
– Sound-reflecting obstacles (e.g. glass surfac-
es, flat painted surfaces),
– And very thin obstacles.
Other ultrasound sources (e.g. pneumatic brakes
of other vehicles, jackhammers) can interfere with
detection of obstacles.
Fault indication without warning tone
All red light segments of the active warning indica-
tors light up when there is a temporary fault in
ParkAssist.
Note
Correct operation is no longer ensured if there is
a temporary fault (e.g. caused by ice formation or
heavy soiling on the sensors).
The system detects the temporary fault.
All light segments light up until a speed of
9 mph (14 km/h) is reached.
ParkAssist is ready for operation again when the
interference has been eliminated.Fault indication with warning tone
In the event of a long-lasting fault in ParkAssist,
the red light segments of the active warning indi-
cators light up and a continuous tone sounds for
three seconds after a transmission range has
been selected.
Possible causes
– Defect or system fault.
fSwitch ParkAssist off.
When ParkAssist is switched off, the indicator
light in the button lights up.
fPlease have the fault remedied at an autho-
rized Porsche dealer.Driving with a trailer
The ParkAssist rear monitoring area is switched
off when the trailer’s power supply is plugged in.

206
Shifting Gear, Traction Systems
Driving Programs for On-Road and
Off-Road DrivingTwo different driving programs with special power-
transmission and running-gear control systems
(such as ABS, off-road ABS and PSM, etc.) are pro-
vided in your Porsche, with the aim of realising the
best possible driving dynamics combined with
maximum safety.
All control systems meet these requirements for
both off-road and normal driving.With rocker switch A, you can easily select the ap-
propriate driving program to suit the special re-
quirements for the respective terrain.
Off-road program Low Range
(with reduction)
When Low Range is active, the power transmis-
sion and running-gear control systems are
automatically adapted to the requirements for
off-road driving.
On-road driving program High Range
(without reduction)
When High Range is active, the power-transmis-
sion and running-gear control systems are auto-
matically adapted to the requirements for on-road
driving.
UseRocker switch A is located in the center console
of the vehicle. It features a multi-step function and
can be operated in both directions. Each time the rocker switch is pushed forward,
the vehicle becomes one step more suitable for
off-road driving. This is realised by changing from
the on-road to the off-road driving program or by
engaging the differential locks in stages.
The number of differential locks that can be en-
gaged in Low Range depends on the equipment of
your vehicle.
Each time the rocker switch is pushed back, the
vehicle becomes one step more suitable for on-
road driving.
Once the driving program has been selected, the
rocker switch springs back to home position.
fPlease observe the chapter “POWER-TRANS-
MISSION AND RUNNING-GEAR CONTROL SYS-
TEMS” on Page 211.
Notes on operation
If the Low Range indicator light beside the rocker
switch flashes rapidly after the ignition is
switched on, there is a fault in the shifting
system.
fPlease have the vehicle checked immediately
at an authorized Porsche dealer.

Shifting Gear, Traction Systems
211
Power-Transmission and Running-Gear Control SystemsA complex interconnection of all control systems acting in power transmission and in the running gear has been realised in your Porsche.
All control systems have been linked with the aim of combining the best possible driving performance with maximum safety.
The following systems are involved:
System/designation Scope
PTM
Porsche Traction Management– Full-time all-wheel drive
– Electronically controlled center differential lock
– Automatic brake differential (ABD)
– Traction control system (TCS)
– Reduction gear/Low Range
PTM Plus
Porsche Traction ManagementIn addition to the PTM features, PTM Plus also includes:
– Electronically controlled rear differential lock
– Hydraulically disengageable anti-roll bars
PSM
Porsche Stability Management– Stability management system
– Anti-lock brake system (ABS)
– Traction control system (TCS)
– Automatic brake differential (ABD)
– Engine drag torque control (MSR)
Air suspension
with level control and height adjustment– Fully load bearing air spring struts with integral shock absorbers
– Air supply system with pressure accumulator
PAS M
Porsche Active Suspension Management– Shock absorber system with adaptive, continuous shock absorber control

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.