2008 PORSCHE CAYENNE ECU

Chassis
Precision in design.
Precision on the road.
location is more accurate and
agility is enhanced, with minimal
disturbance on uneven surfaces.
The subframe is secured on
rubber mountings that minimise
road noise and thus enhance
the engine acoustics.
Made from lightweight high-
strength steel, the front
suspension subframe is specially
constructed to increase the
rigidity of the car.
The resulting benefits include
greater stability, greater comfort
and even greater active and
passive safety. In the event
of an accident, the subframe
deforms in a predefined manner
to provide additional protection
for the passenger compartment.
Front axle.
A powerful and responsive engine
requires an equally responsive
chassis.
The front axle on all fourCayenne
models features subframe-mounted
double wishbone
suspension with
high-mounted upper arms. By
raising the top
wishbones, wheel
Rear axle.
A balanced chassis is essential
on any car and one of the major
challenges in vehicle design.
On all four Cayenne models, we
solved this problem using multi-
link rear suspension. Ideal for
performance road and track
use, it also copes well with the
extremely high towing and
carrying loads that are possible
with each Cayenne.
The lower suspension links and
track rods have a special sheet
steel construction offering greater
strength. The upper links are
located high in the wheel arches
and can therefore be made from
lightweight forged aluminium.
The suspension struts are angled
to allow longer suspension travel
and create a deeper and wider
cargo area. As well as providing
additional space, the car is easier
to load. A key advantage of the
rear axle design is its ability to
minimise dive and squat under
acceleration and braking. It also
uses active toe-angle control to
improve mid-corner stability and
compensate for sudden load
transfer, e.g., lift-off oversteer.
In short: a chassis you would
expect from Porsche. Specially
developed in Weissach.
Front axle (Cayenne Turbo) Rear axle (Cayenne Turbo)
· 73 · · 72 ·

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 ·

Natural leather interior in Black/Chestnut Brown (Cayenne Turbo)
Comfort
Long-distance comfort on the road.
Lateral support on the racetrack.
The Cayenne and Cayenne S have
comfort seats as standard with
the option of a comfort memory
package. The Cayenne GTS comes
with sports seats and a comfort
memory package as standard
(both optional on all other models).
The standard comfort seats in
the Cayenne and Cayenne S offer
electric fore/aft, height, backrest,
squab angle and lumbar support
adjustment for the driver and front
passenger.Front seats.
Ergonomically crafted, the standard
front seats in the Cayenne models
offer high lateral support, extensive
variability and excellent long-
distance comfort.The Cayenne Turbo has comfort
seats with comfort memory
package as standard.
Special features include electric
adjustment on the front seats
(12-way), steering column and
driver’s seat-belt height. The
comfort memory package stores
seat, mirror, steering wheel and
seat-belt height settings for up
to three different drivers. The
passenger-side memory also stores
up to three sets of preferences. The
comfort seats are also available
as an option on the Cayenne and
Cayenne S.
The Cayenne GTS comes with
sports seats as standard. These
are also equipped with the same
comfort memory package included
with the comfort seats. Special
seat features include higher side
bolsters offering greater lateral
support. The sports seats are
available as an extra-cost option
on the Cayenne and Cayenne S
and no-cost option on the
Cayenne Turbo.
The seat belt buckle is mounted
on the seat, which means the
belt is comfortable and secure
however the seat is positioned.
Other important passive safety
features include seat-belt pre-
tensioners and force limiters.
All front seats are available with
embossed Porsche Crest on the
head restraints as an option.
Porsche Crest embossed on head restraint Sports seat in natural leather with comfort memory package
(optional for Cayenne, Cayenne S and Cayenne Turbo)
· 117 · · 116 ·

Comfort, ergonomics and security.
Anti-theft protection.
The Cayenne models are all
equipped as standard with an
engine immobiliser and anti-theft
alarm featuring ultrasonic interior
surveillance.
The alarm circuit includes all four
doors, engine lid, tailgate, rear
screen, interior, ignition and trailer
(if fitted).
The immobiliser system works by
automatically communicating with
the vehicle key. If the key is ap-
proved, the engine can be started
as normal.
When the key is removed from the
ignition, the steering column is
automatically locked to provide
additional security.
Porsche Entry & Drive.
With this optional system, you can
reduce the inconvenience of a con-
ventional key.
The moment you touch the door
handle
, the system automatically
checks the encrypted access code
on the key in your pocket. If the
code is accepted, the doors are
unlocked. To start or stop the
engine, simply push the ignition
button.
To lock the car on leaving, all you
have to do is press a button on the
outside of the door handle. Porsche
Entry & Drive then secures the car
doors, arms the immobiliser and
locks the steering column.
Preparation for vehicle
tracking system.
This optional preparation available
for all Cayenne models enables
future installation of a vehicle
tracking system obtainable from
Porsche Tequipment. The system
can be used to locate a stolen
vehicle across much of Europe.
Includes special wiring loom,
higher capacity battery (depend-
ing on vehicle specification) and
tilt sensor for the alarm system.
Cruise control.
Standard on the Cayenne Turbo
and optional on all other models,
cruise control offers increased
comfort on long-distance journeys.
It can be used at speeds between
30 and 240 km / h (19 and 149 mph)
and is activated using a button on
one of the control stalks.
Slide /tilt sunroof.
Available as an option on all
Cayenne models, the slide/tilt
sunroof is made from tinted
single-pane safety glass and has
a manually adjustable sunscreen.
The roof position is easily adjusted
using a single illuminated rotary
control. The sunroof also has
an anti-jam facility, as do all the
electric windows.
Comfort lighting package.
One of the special features in this
optional package is the ‘Welcome
Home’ lighting function. When you
arrive at a destination after dark,
the headlights remain
illuminated
Comfort
for a user-defined period, lighting
your path from the car. Other
features include courtesy lights
on both exterior
mirrors, auto-
matic headlight activation and
automatically dimming interior
and exterior mirrors.
· 127 · · 126 ·

The rear door on the Cayenne
models opens high for easy
access and loading. A power
closing function is also included
as standard. An automatic tailgate
is available as an option, with
easy operation via controls on
the driver’s door, tailgate and key
remote. The opening height is
user-programmable.
To load or retrieve smaller items,
the rear screen can be opened
independently using either the
key remote or a button on the
rear window.
Transport
Convenient access and loading.
Tailgate.It won’t make it any more spacious – it just feels that way.
Loadspace management system.
This optional facility enables you
to partition the luggage compartment
and secure individual objects
during transit. The partitions are
created using a special rail system
with sliding telescopic bar. Objects
can be secured using a fixing belt
and four variable lashing eyelets.
A reversible mat protects against
dirt while preventing movement
under braking, etc. The package
also includes a loadspace partition
net with two easily accessible
attachment points on the rooflining.
The partition net provides additional
safety when the car is fully laden.Loadspace management system and partition net
Button for automatic tailgateRear screen
· 145 · · 144 ·Telescopic bar Case secured with fixing belt