2008 PORSCHE CAYENNE steering

Model range
Exceptional performance.
What else would you expect from a Porsche?
The Cayenne.
A high-performance six-speed
manual gearbox is standard
equipment. The optional six-speed
Tiptronic S includes gearshift
controls on the steering wheel.
It is also equipped with standby
control for better fuel economy
(see page 64).
The powerful brakes increase
active safety in all driving scenarios.
The black-finish calipers are unique
to the V6 model.
With its precision steering and
sports chassis setup, the Cayenne
is agile and responsive. Using
Porsche Traction Management (PTM)
and Porsche Stability Management
(PSM), power is transmitted through
the permanent all-wheel drive with
efficiency, precision and safety. In
difficult terrain, the electronically
variable centre differential combines
with the anti-slip regulation (ASR)
and automatic brake differential
(ABD) to maintain optimum traction
at all times. This ability is enhanced
in low-range mode, where all gear
ratios are reduced. As a result,
the car remains mobile in soft
ground and performs better when
towing a heavy trailer load. For
the toughest off-road conditions,
the electronically variable centre
differential can be fully locked while
in low-range mode using the PTM
control on the centre console.
The torque split is then fixed with
38 % of drive being transmitted
to the front wheels and 62 % to
the rear.
For extreme off-road use, there’s
the optional Off-road Technology
package. As well as increasing
underbody protection, it includes
an electronically variable rear
differential (see page 89). This
differential can also be manually
locked to increase off-road
traction.
The Cayenne is an excellent on-
road performer with a wide range
of other talents: off-road capability,
comfort, safety, sporting style and
practicality.
Its powerful V6 engine features
direct fuel injection (DFI), variable
valve timing on inlet and exhaust
and a variable resonance intake
manifold. The results: generous
performance and excellent fuel
economy.
The 3.6-litre engine develops
213 kW (290 hp) at 6,200 rpm.
Maximum torque is 385 Nm
from as low as 3,000 rpm. With
a manual gearbox, it requires
8.1 seconds to reach 100 km / h
(62 mph). Maximum speed is
227 km / h (141 mph).
Press the standard ‘Sport’ button
and the engine management is
adjusted to maximise throttle
response.
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non-slip Alcantara, as are the
rooflining, manual gear-lever boot
and parts of the door panel trim.
The rear seats have a two-seater
look but are in fact designed
f
or up to three adult occupants.
The ‘Sport’ aluminium package
uses aluminium trim on the
dashboard and doors to enhance
the car’s sporting style.
GTS. A thrilling blend of two
legendary designations: the
uncompromising character of Engine power is more than
matched by the red-caliper brakes
with internally vented discs
measuring 350 mm in diameter
at the front. The Porsche Ceramic
Composite Brake (PCCB) is
available as optional equipment.
The performance capability of
the Cayenne GTS is expressed
throughout the exterior design.
The front and rear sections are
identical to those on the Cayenne
Turbo. The colour-coded lower
mouldings (front, side and rear)
enhance the car’s powerful looks.
An elongated roof spoiler with
fixed bi-plane profile is available
as a no-cost option. The side
window surrounds, door handles
and door-sill trim strips have a
stylish black finish. Another feature
unique to the GTS model is the
pair of dual-tube chrome tailpipes
on the sports exhaust system.
The interior shares the same
sporting style – from the stainless
steel door-sill guards with
‘Cayenne GTS’ logo to the high-grip
padded leather steering wheel.
The standard leather interior
incorporates a range of surfaces
on the dashboard, centre console
and door panels. The electrically
adjustable sports seats combine
luxury driving with high lateral
support and include a comfort
memory package. The front and
rear seat centres are finished in
Model range
Extended roof spoiler with fixed bi-plane profile (no-cost option)
the Porsche GT plus the sporting
capability of the Porsche S.
The Cayenne GTS continues
these traditions with power,
practicality and driving pleasure.
The sports seat package with comfort memory includes a three-seater rear bench featuring two-seater styling
· 33 · · 32 ·

Drive
The convenience of an automatic.
The excitement of a sequential gearbox.
Six-speed Tiptronic S.
Each gearshift point is automatically
selected based on current road
conditions and driving style.
Within a short space of time,
you’ll develop a feel for the
system and begin to influence
gearshifts using the throttle alone.
The benefits of Tiptronic S are most
apparent in high-performance driving.
The immediacy of response, with
practically no interruption in drive,
is comparable with that of a manual
gearbox.
Tiptronic S automatically selects
the optimum gearshift pattern,
even in low-range mode. The
low-range gearing is available at
speeds of up to 15 km / h (9 mph).
You can also return to high-range
mode at up to 30 km / h (19 mph).
For complete manual control,
simply slot into manual and use
the gearshift controls on the
steering wheel. If you prefer, you
can use the gear selector lever
on the centre console. Even in
automatic mode, you can change
gear manually via the rocker
controls on the steering wheel.
If there is no further manual
input for a period of 8 seconds,
the system reverts to automatic
mode.
One of the special features in
Tiptronic S is standby control.
When the car is stationary in an
active gear position and with the
foot brake applied, the input
clutch automatically disconnects
the engine from the driveline,
thereby reducing fuel consumption.
Other useful functions include
a warm-up programme which
temporarily suppresses upshifts
in order to accelerate warm-up
in the catalysts and thus reduce
emissions. If rapid throttle inputs
are detected, the system automat-
ically selects the ‘Sport’ gearshift
pattern, i.e., there is no need to
use a ‘kickdown’ function. When
the throttle is released quickly, e.g.,
on entering a corner, unwanted
downshifts are prevented.
Mid-corner gearshifts are also
suppressed, enhancing stability
and safety.Under heavy braking, Tiptronic S
shifts down to maximise engine
braking. An incline sensor enables
better uphill acceleration and
better engine braking on descent.
Another special feature, Porsche
Hill Holder, permits easy hill starts
without the need to use the brakes.
The gearbox cooling system is
specifically designed to match
the performance, transport,
towing and off-road capabilities
of all Cayenne models.
Tiptronic S is standard equipment
on the Cayenne Turbo and optional
on the other three models. The
six forward ratios transmit power
with smoothness, efficiency and
precision – whatever your choice
of terrain.
In automatic mode, the gearshift
maps range from maximum
economy to maximum performance.
Tiptronic S gearshift control on steering wheel
Tiptronic S gear selector
· 65 · · 64 ·

Chassis
Exceptional power requires accurate direction.
Steering.Tough for off road, light for the track, stylish for any terrain.
Wheels.
The electrically adjustable steer-
ing column has a driver-selectable
‘Easy Entry’ function, which raises
the steering wheel towards the
dashboard whenever you enter
or leave the car. The comfort and
sports seat options (standard on
Cayenne GTS and Cayenne Turbo)
have a comfort memory package
that stores your preferred
wheel position as well as seat
and exterior mirror settings.
The steering column consists of
multiple collapsing sections linked
by three universal joints. A special
deformation element offering
70 mm of travel provides a high
level of safety in the event of front
impact.
Servotronic.
Servotronic is a speed-sensitive
power steering system available
as an option on all Cayenne
models.
At higher speeds, the steering
becomes firmer, inputs are more
precise and driver comfort is
greatly enhanced.
At lower speeds, it enables easy
manoeuvrability and parking. For optimum manoeuvrability, on
and off road, all Cayenne models
have variable-ratio steering
and special valve settings on
the power-steering system. Lock-
to-lock travel is a modest
2.65 turns, while the turning
circle is just 11.7 metres.
The steering wheel can be adjusted
by 50 mm for reach and 40 mm
for height. Both adjustment options
are electrically assisted on
the Cayenne GTS and Cayenne
Turbo. Electric adjustment is also
available as an option on the
Cayenne and Cayenne S as part
of the optional comfort or sports
seat package (each with comfort
memory package). The optional
padded steering wheel (standard
on Cayenne GTS) brings added
sporting style to each model.
the multi-purpose display in the
instrument cluster. Standard wheel fitments are as
follows: 17-inch Cayenne alloys on
the Cayenne, 18-inch Cayenne S II
on the Cayenne S, 21-inch
Cayenne Sport on the Cayenne
GTS and 19-inch Cayenne Design
on the Cayenne Turbo.
For a more personal touch, you
can choose from a range of
wheel options (see page 160).
Tyre Pressure Monitoring
(TPM).
The optional TPM warns of any
drop in pressure via the on-board
computer display. In addition,
the driver can check the individual
pressures in all four wheels via
17-inch Cayenne wheel 18-inch Cayenne S II wheel
21-inch Cayenne Sport wheel 19-inch Cayenne Design wheel
· 75 · · 74 ·

Chassis
Active damping adjustment for optimum performance and comfort.
Porsche Active Suspension Management (PASM).
Both systems are optional on
the Cayenne and Cayenne S. The
Cayenne GTS has an exclusive
combination of PASM and high-
performance steel-sprung suspen-
sion (ride height lowered by 24 mm).
During performance driving or
heavy off-road use, there is a
greater tendency for the body
to roll. PASM prevents this from
happening, thereby improving
stability and occupant comfort.
PASM has three setup modes:
‘Comfort’, ‘Normal’ and ‘Sport’.
In all three cases, the system
uses a series of sensors to
monitor the movement of the
body, e.g., under acceleration and
braking or on poor road surfaces.
It also gathers data on lateral
acceleration, steering angle, brake
pressure and engine torque. The
PASM control unit then evaluates
this information and modifies the
damping forces in accordance
with the selected mode.
PASM remains active at
all times, adapting to the
changing conditions.
If the road surface deteriorates
while travelling in ‘Sport’ mode,
for instance, the system
immediately changes to a softer
rating, thereby improving road
contact. When the road surface
improves, PASM automatically
reverts to the original, harder
rating. This not only increases
stability and safety, it also
enhances comfort.
PASM is an electronic damping
control system. It offers continuous
adjustment of individual damping
forces based on current road
conditions and driving style. PASM
is standard on the Cayenne Turbo
in conjunction with air suspension.
· 77 · · 76 ·PASM control with ‘Comfort’, ’Normal’ and ‘Sport’ options

Chassis
Active prevention of body roll when cornering.
For greater comfort and control.
Porsche Dynamic Chassis Control (PDCC).
PDCC is an active anti-roll system
that anticipates and significantly
reduces lateral body movement
when cornering. It also minimises
oscillation on rippled road
surfaces. As a result, the car
remains stable and easy to
control. This is achieved with the
aid of active anti-roll bars on the
front and rear axles. The system
responds to the current steeringangle and lateral acceleration by
producing a stabilising force that
precisely negates the swaying
force of the body.
The benefits are better traction
and occupant comfort both on
and off the road.For the driver, PDCC provides
greater agility at every speed, more
responsive steering and stable load
transfer characteristics. Combined,
these represent a new benchmark
in steering precision. Performance
and comfort are both improved,
and with them, driving pleasure.
When the low-range gearing is
selected, PDCC automatically
switches to off-road mode.
Essentially, this allows the
two halves of each anti-roll bar
to
rotate further in opposition to
each other. This in turn enables
greater wheel articulation, which
improves traction on uneven
surfaces.Since each wheel has more
contact with the ground, more
drive can be transmitted (see
page 86).Vehicles with PDCC have a
silver finish on the centre
console chassis controls. Among the key objectives of
Porsche chassis design are
optimum road holding and precision
handling. Both of these character-
istics can be further enhanced with
Porsche Dynamic Chassis Control
(PDCC). It is available as optional
equipment on all Cayenne models
in conjunction with air suspension/
PASM (standard on Cayenne Turbo,
optional on all other models).
High-speed cornering without PDCC High-speed cornering with PDCC
· 81 · · 80 ·

Off road
Porsche Hill Control (PHC) uses
engine braking to enable steady
descent on otherwise hazardous
gradients at speeds of up
to 20 km / h (12.5 mph). If one
or more wheels begin to lose
traction, PHC compensates by
applying increased engine braking
on those that retain contact withthe ground. With no need to
adjust braking, the driver can
concentrate fully on steering
the car.
With steel-sprung suspension,
the maximum wading depth is
500 mm.* With the optional air
suspension (standard on the
Cayenne Turbo), the car is secure
to a depth of 555 mm.**
On extremely uneven terrain,
you can smooth your path with
the optional Porsche Dynamic
Chassis Control (PDCC). Featuring
active anti-roll bars, the PDCC
off-road mode is automatically
enabled whenever ‘low-range’
mode is selected. With greater
articulation of each wheel, there
is less unwanted body-roll and
occupant comfort is improved.
PDCC in on-road mode: reduced wheel articulation
PDCC in off-road mode: increased wheel articulation
**Cayenne GTS: 476 mm.** Cayenne GTS with air suspension: 535 mm.
· 87 · · 86 ·

The Cayenne Turbo comes with
Bi-Xenon headlights featuring
dynamic range control and
integrated cleaning, as well as
static and dynamic cornering
lights.
The dynamic cornering light
function uses the road speed,
yaw velocity (speed of rotation
around the vertical axis) and
steering angle to calculate the
course of each corner. The system
Lighting the way in active safety.
Headlight system.
Safety
The static cornering lights are
extremely useful when turning at
a junction, even at lower speeds.
Depending on the amount of
steering lock applied, they can
illuminate an unlit side street.
The new daytime running lights
(dipped-beam headlights and side-
lights) can be set to automatically
activate when the car is started.
Headlight (Cayenne, Cayenne S and
Cayenne GTS)
All Cayenne models have round
H11 foglights on the front apron.
Other exterior lights.
The rear lights are designed as
one-piece modules. The reversing
lights, brake lights and high-level
third brake light feature high-speed
LEDs.The doors and tailgate are fitted
with red safety lights. An additional
pair of indicators are located in the
front wheel arches, where they are
visible from the front, side and rear
of the car.
Cornering light function on Bi-Xenon headlights
then calculates the optimum
angle of illumination for the swivel-
mounted Bi-Xenon lights up to a
maximum of 15°. Visibility is much
improved in every corner and
potential obstacles are easier to
identify. The system is also available
as an option on the Cayenne,
Cayenne S and Cayenne GTS.
Headlight (Cayenne Turbo)
It’s always a pleasure taking
corners in a Porsche. Especially
now they’re so visible at night.
The Cayenne, Cayenne S and
Cayenne GTS are all equipped
as standard with an H7 projector-
beam headlight system featuring
manual range control and
reflection high-beam lights.
Sidelights and indicators are
neatly combined as rectangular
units in the outer air intakes.
· 93 · · 92 ·