2013 PORSCHE CAYENNE sensor

Drive systems and chassis | Engine technology · 44
43 · Drive systems and chassis | Engine technology
Air intake system.
The Cayenne models are all equipped
with a resonance air intake system.
This technology uses the pressure waves
generated by the inlet valves to ‘ force’ air
into the engine.
The effect is further enhanced on the V6
engine in the Cayenne and the V8 engine
in the Cayenne S and the Cayenne GTS
by a t wo -stage intake manifold. This vari -
able geometry combines all the benefits
of a long intake tube (higher torque at
low rpm) with those of a shorter length
(more power at higher rpm).
The result: highly impressive torque
ratings across the entire engine speed
range.
Turbocharging system in the
Cayenne Turbo.
In the Cayenne Turbo, the engine is
assisted by t win turbocharger units
arranged in parallel – one for each bank
of cylinders. Incoming air is passed
through a filter and compressed by the
turbine units. Its temperature is then
reduced in the twin intercooler system,
which improves cylinder charging and
limits thermal loads on the engine.
Supercharging system in the
Cayenne S Hybrid.

The engine in the Cayenne S Hybrid is
equipped with a supercharger. For a
more direct response, even at low revs
and road speeds. The supercharger has
a low-temperature water cooling system
for cooling the charge air.
Variable Turbine Geometry (VTG) in
the Cayenne Diesel.
The turbocharger in the Cayenne Diesel
features Variable Turbine Geometry
(V TG). The gas-flow from the engine
is channelled onto the turbines via elec -
tronically adjustable guide vanes. By
changing the vane angle, the system can
replicate the geometry in all t ypes of
turbo, large or small, and thus achieve
the optimum gas-flow characteristics.
As a result, even at low engine rpm,
the turbine speed is maximised. For a
significant increase in boost pressure,
excellent cylinder charging plus greater
power and torque.
Electronic engine management.
Cultured performance in all driving
scenarios requires comprehensive
engine control. The electronic engine
management system does this by
continually monitoring the relevant input
data from a variet y of sophisticated
sensors. This data is then compared with
a corresponding set of reference values.
Based on this information, a range of
key engine functions, e.g. ignition and
injection timings as well as injection
quantities, are seamlessly and auto -
matically adjusted. Other major functions
include on-board recuperation. It ensures
that the on-board power supply is only
replenished while the vehicle is on the
overrun. This boosts fuel economy as
well as performance, and ensures max -
imum engine output during acceleration.
All this goes unnoticed by the driver,
apart from the obvious benefits: lower
fuel consumption and CO
2 emissions plus
greater power and torque at all times.
Exhaust system.
The light weight exhaust systems in the
Cayenne models are made from special,
long-life stainless steel. The key features
of the catalysts are high efficiency,
faster warm-up and a long service life.
Sports exhaust system.
Available as an option on the Cayenne
and Cayenne S and included as standard
on the Cayenne GTS, the sports exhaust
system
1) provides an even more distinct -
ive sound. For the looks to match, it
comes with a specially designed set of
t win dual-tube tailpipes with a high-gloss
finish. On the Cayenne GTS, these are
finished in mat t black.
All exhaust systems, standard and
sports, comply with the EU 5 emissions
legislation.
1) For Cayenne only in conjunction with Tiptronic S. Single-tube tailpipes on the Cayenne, Cayenne Diesel,
Cayenne S and Cayenne S Hybrid
Dual-tube tailpipes on the Cayenne Turbo
Sports exhaust system (optional)
But ton for spor ts exhaust system
Spor ts exhaust system, with t win dual -tube tailpipes in mat t black on the Cayenne GTS For fuel consumption, CO2 emissions and efficiency class data, please refer to pages 150/151.

All -wheel drive on the Cayenne, Cayenne S, Cayenne GTS and Cayenne Turbo
Drive systems and chassis | Transmission · 48
47 · Drive systems and chassis | Transmission
Intelligent, discreet, responsive.
The ideal travelling companion.
Porsche Traction Management (PTM)
on the Cayenne, Cayenne S,
Cayenne GTS and Cayenne Turbo.
Porsche Traction Management (PTM) is
an active all-wheel drive system with an
electronically variable, map-controlled
multi-plate clutch, automatic brake differ -
ential (ABD) and anti-slip regulation (ASR).
Torque is distributed bet ween the front
and rear axles by means of the electron -
ically variable multi-plate clutch. For the
toughest off-road terrain, the differential
can be locked using the PTM control
on the centre console. With the aid of
on-board sensors, the status of the car
is continuously monitored and the front/
rear split is adjusted to match changing
driving conditions. The sensors are used
to measure a range of values, including the rotational speed of all four wheels,
the lateral and longitudinal acceleration
of the car, and the current steering
angle.
If, for example, the rear wheels threaten
to lose traction under acceleration, a
greater proportion of drive torque is
automatically transmit ted to the front
axle by a more positive engagement of
the multi-plate clutch. In addition, ASR
minimises wheel spin. During cornering,
the required level of engine torque is
distributed to the front wheels to ensure
excellent lateral stability.
In conjunction with advanced Porsche
Stabilit y Management (PSM, p. 68), PTM
ensures the perfect distribution of drive
torque for optimum traction in all road
scenarios, whether on long straights,
through tight corners or on surfaces

with different friction coefficients. If one
of the wheels is about to lose traction,
PTM uses the ABD function to apply the
corresponding brake. As a result, more
drive is automatically transferred to
the opposite wheel. If both wheels on
one axle are in danger of slipping, ASR
immediately intervenes and modifies
engine output to maintain drive. As well as enhancing traction and active safet y,
Porsche Traction Management (PTM)
offers exceptional handling and driving
dynamics.Standard on the Cayenne, Cayenne S,
Cayenne GTS and Cayenne Turbo.

Drive systems and chassis | Chassis · 58
57 · Drive systems and chassis | Chassis
Making headway without getting in a spin.
An approach we thoroughly support.
Porsche Torque Vectoring Plus
(PTV Plus).
A system for enhancing driving dynamics
and stability, PTV Plus offers variable
distribution of engine torque to the rear
wheels and electronically controlled rear
differential. Depending on the steering
angle, steering speed, throttle pedal
position, yaw velocit y and vehicle speed,
PT V Plus optimises steering response
and precision by applying brake pres -
sure to the left or right rear wheel, as
r equired. Specifically, this means that when enter
-
ing a corner at high speed, moderate
brake pressure is applied to the inside
rear wheel. This transfers drive torque to
the outside rear wheel which supports
the steering motion of the car, thereby
improving its cornering dynamics.
At slow and medium speeds, PT V Plus
considerably enhances agility and steer -
ing precision. At high speeds, during
fast cornering and under wheel spin, the
electronically controlled rear differential
ensures additional stabilit y. Also on
variable-grip surfaces, in the wet and on snow, PT V Plus – combined with Porsche
Traction Management (PTM, p. 47) and Porsche Stabilit y Management (PSM, p. 68)
– provides a major contribution to active
safety.
In off-road terrain, PT V Plus reduces
wheel spin on the rear wheels – even when towing heav y trailer loads. The
electronically controlled rear differential
can be fully locked using the off-road
control on the centre console.
Optional for the Cayenne, Cayenne S,
Cayenne GTS and Cayenne Turbo.
Porsche Active Suspension

Management (PASM).
PASM is an electronic damping control
system. It offers continuous adjustment
of individual damping forces based on
current road conditions and driving st yle.
During performance driving or heav y off-
road use, there is an increased tendency
for the body to sway. PASM prevents
this from happening, thereby improving
stability and occupant comfort. PASM
has three setup modes: ‘Comfort ’,
‘Normal’ and ‘Sport’.
Porsche Torque Vectoring Plus (PTV Plus)
Whichever one you select, the system
uses a series of sensors to monitor the
movement of the body. It also gathers
data on lateral acceleration, steering
angle, brake pressure and engine torque
and modifies the damping force on each
individual wheel in accordance with the
selected mode.
PASM remains active at all times. It
automatically adapts to the prevailing
driving conditions, enabling greater
car control and improving comfort and
safety.The Cayenne GTS is the only model in the
range to feature a steel-spring suspension

with a 24 mm reduction in ride height
including PASM. For a lower centre of
gravit y and even closer contact with the
road.
Optional for the Cayenne, Cayenne
Diesel, Cayenne S, Cayenne S Hybrid.
Standard on the Cayenne GTS.

Standard on the Cayenne Turbo:
air suspension with PASM.

Safety and environment | Safet y · 66
65 · Safety and environment | Safet y
Outstanding brake performance.
To the point.
Braking systems.
Porsche brakes are renowned worldwide
as the benchmark in performance and
durability. Equipped with larger and more
powerful braking systems, the Cayenne
models continue this tradition by offering
excellent deceleration – even when the
car is fully laden with five adult occu -
pants, a full complement of luggage and
a braked trailer load of up to 3,500 kg
(Cayenne with manual gearbox: 2,700 kg).
All Cayenne models have internally
vented discs all round, ensuring con -
sistent performance during heav y use. The front disc dimensions (diameter/
thickness) are 350 mm/34 mm on
the Cayenne and Cayenne Diesel,
360 mm/36 mm on the Cayenne S,
Cayenne S Hybrid and Cayenne GTS, and
390 mm/38 mm on the Cayenne Turbo.
All models have
six-piston monobloc

aluminium brake calipers at the front
and four-piston equivalents at the rear.
The calipers are black on the Cayenne
and Cayenne Diesel and silver on the
Cayenne S and Cayenne S Hybrid. On
the Cayenne GTS and the Cayenne Turbo,
they feature a striking red paint finish.
Standard braking system on Cayenne Turbo Standard braking system on Cayenne S,

Cayenne S Hybrid/Cayenne GTS; calipers in red
Standard braking system on Cayenne, Cayenne Diesel
Braking is assisted by a tandem booster
and large brake master cylinder. Further
assistance is provided by PSM (p. 68).
For greater safet y, the brake pads are
equipped with wear sensors, alerting
the driver when new pads are required.
Electric parking brake.
Manually activated and deactivated,
the electric parking brake releases
automatically as you drive off.
Automatic hold function.
With the automatic hold function, you
can pull away on the flat or a slope
without ever rolling back. The system
automatically detects when the vehicle
has come to a halt on an uphill gradient.
PSM then maintains the brake pressure
at all four wheels for a brief period to
prevent the vehicle from moving in the
opposite direction.

Safety and environment | Safet y · 70
69 · Safety and environment | Safet y
Porsche Stability Management (PSM).
Porsche Stabilit y Management (PSM) is
an electronic control system that uses a
range of functions – including anti-lock
braking (ABS) – to help stabilise the
vehicle (and trailer, if fit ted) in hazardous
road scenarios. Throughout each journey,
sensors monitor the direction, speed,
yaw velocit y and lateral acceleration of
the car. Using this information, it is pos-
sible to calculate the actual direction of
travel at any given moment. If the car
begins to oversteer or understeer, PSM
applies selective braking on individual
wheels to restore stabilit y. If necessary,
PSM can also intervene in the engine
management system to temporarily
modify the amount of drive transmitted
to the wheels. PSM has three additional functions that
help reduce braking distances. If the
throt tle pedal is released suddenly, PSM
automatically readies the braking sys
-
tem. The pressure in the brake lines
is marginally increased, bringing each
of the pads into light contact with the
corresponding disc. If the driver goes on
to apply the brakes, the calipers respond
more quickly and the braking distance is
reduced.
In an emergency stop – i.e. when the
pressure on the brake pedal exceeds
a certain threshold – the brake assist
function uses the PSM hydraulics to
apply maximum braking force at all
four wheels.
Preparing for the road ahead.
With a little help from PSM.
For added safet y, the system also read -
ies the brakes whenever a decreasing
distance to the vehicle in front is detect -
ed. The optional adaptive cruise control
and PSM interact to prefill the brakes.
Even if adaptive cruise control is inactive,
the system registers the speed of the
vehicle in front and automatically readies
the braking system. In addition, the sys -
tem alerts the driver to the decreasing
distance by briefly tugging on the
brakes.
PSM also features a trailer stabilisation
function – for a significant contribution
to car and trailer safet y. Within the laws
of physics, it compensates for load
transfer caused by throt tle and brake inputs up to the maximum degree of
lateral acceleration. It also enhances the
car’s driving dynamics and directional
stability when accelerating on inconsis
-
tent road surfaces.
Other features include a special control
strategy in the ABS for braking on loose
surfaces. By briefly locking the wheels,
a wedge is formed ahead of each t yre
which provides additional purchase to
help slow the car, e.g. on gravel or snow.
For a more involving driving experience,
PSM can also be disabled, but remains
active in the background.
Standard on all Cayenne models.

Safety and environment | Safet y · 72
71 · Safety and environment | Safet y
Placing great weight on safety.
While taking things lightly.
Passive safety.
Airbags.
All Cayenne models are equipped with
full-size front airbags for driver and
front passenger as standard. These
are augmented by Porsche Side Impact
Protection (POSIP).
This comprises a side airbag in each
front seat, curtain-t ype airbags on each
side of the roof offering optimum head
protection for both rows of seats and
side impact protection elements in each
door. Side airbags at the rear are also
available as an option.
Two impact sensors are located at the
front of the car to enable bet ter detec -
tion of a head- on collision. The driver and front passenger airbags use a gas
generant based on an organic propellant.
As a result, the airbags are lighter,

more compact and easier to recycle.
A roll-over detection system provides
additional protection in the event that
the car were to overturn. Using sensor-
acquired data, it enables early deploy-
ment of the curtain airbags and triggers
the seat-belt pre-tensioners.
Seat belt system.
The Cayenne models feature three-point
seat belts on all five seats, as well as
seat-belt pre-tensioners (front and outer
rear seats) and force limiters (front seats
only).
ISOFIX mounting points.
The outer rear seats are equipped with
ISOFIX mounting points for compatible
child seats (p. 87) as standard. These
are available as an option for the front
passenger seat.
Bodyshell construction.
Our ongoing development of the light -
weight steel body is a decisive factor
in the enhanced passive safet y and
unparalleled rigidit y of the Cayenne body.
In the event of an accident, a system of
side and cross-members at the front of
the car helps to channel impact energy in
a safe and predetermined manner. The
interior is protected by hot-formed super
high-strength steel reinforcements,
including side intrusion beams in each
of the doors.
Passive safety: bodyshell
Passive safet y: airbags
High strength and consistent deformation
properties: t wo key safet y requirements
fulfilled by the multiphase steel used
throughout the body. Thanks to a safet y
cage structure made from high-tech
steels, the highly resilient passenger cell
offers high levels of protection.
Multi-phase steels
Boron-alloyed steels
Plastic Aluminium
Deep-drawn steels
High-strength micro-alloyed steels

Safety and environment | Environment · 76
75 · Safety and environment | Environment
Exhaust emissions.
The Cayenne models are all equipped
with the latest emissions technology. As
a result, they comply with the European
exhaust emissions standard, EU 5.
Whatever the class, every Porsche
combines high performance with com -
paratively moderate emissions. On the
Cayenne models, this is achieved using
advanced drive concepts – from petrol
and diesel engines to our parallel full
hybrid drive. This is further aided by the
rapid warm-up cycle of the catalytic
converters. The optimum operating tem -
perature is reached earlier so emissions
are reduced sooner when starting from
cold. On the petrol- engined and hybrid models,
another important feature is the use of
t win oxygen-sensor circuits. Each bank of
cylinders has a separate control system
which the engine management system
uses to establish the optimum amount of
fuel – for effective emissions control.
The exhaust-gas recirculation on the
Cayenne Diesel routes part of the exhaust
gas back into the combustion process,
resulting in lower peak com bustion tem-
perature and therefore lower nitrogen
oxide emissions. An oxidation catalyst
also forms an integral part of the process
along with a diesel particulate filter.
Porsche engines.
Performing for today – and the future.
Fuel and fuel economy.
Increasing performance while enhancing
fuel economy. The Cayenne comes in a
choice of three different drive systems,
each featuring state-of-the-art technol -
ogy for high efficiency and relatively low
fuel consumption. The petrol-engined
models already operate on fuels with

an ethanol content of up to 10 %. This
further improves the carbon dioxide
balance since the plants grown for the
production of biofuels absorb carbon
dioxide from the atmosphere. As you
can see, for the benefit of the environ
-
ment, we are continually working on
making our cars more efficient – as

well as compatible with alternative
fuels. While ensuring that they remain
one thing: a thoroughbred Porsche.
Fuel system.
We have also applied the highest stand -
ards to our petrol- engined models in
order to protect the environment from
fuel evaporation. The non-return fuel
supply system provides a considerable
reduction in vapour emissions. The lines
carrying vapour are made from multi-
layer plastics. A large active-carbon
filter and multi-layer plastic fuel tank help
reduce evaporation still further.
For fuel consumption, CO
2 emissions and efficiency class data, please refer to pages
15 0/ 151.

Comfort and transport | Comfor t · 92
91 · Comfort and transport | Comfor t
The key to success in management:
focused performance with slices of delight.
CDR audio system.
A Porsche engine provides an impressive
sound experience in its own right. The
Cayenne models offer the perfect accom -
paniment inside the cockpit.
The CDR audio system has a 7-inch
colour touchscreen display which
enables you to navigate and select
the main menus and functions with
ease and efficiency.
The integrated CD radio, featuring an FM
t win-tuner with RDS, 30 memory presets,
dynamic autostore and speed-sensitive
volume control, includes a sound system
with 10 loudspeakers and a total audio
output of 100 wat ts. The CDR can also be combined with the
optional Burmester® High-End Surround
Sound System (p. 96) or BOSE
® Surround
Sound System (p. 98) for the ultimate in
audio performance.
Other options available in conjunction
with the CDR include an integrated six-
disc CD autochanger. With an optional
mobile phone preparation (p. 93), you
can connect a Bluetooth
® Hands- Free
Profile (HFP)-compatible mobile phone.
Standard on the Cayenne, Cayenne
Diesel, Cayenne S, Cayenne S Hybrid
and Cayenne GTS.
CDR Plus audio system.
The optional CDR Plus audio system
features a total of 11 loudspeakers and
a total output of 235 wat ts. The system
is operated via a 7-inch high- definition WGVA TFT touchscreen display. CDR Plus
can also be combined with the optional
sound systems from Burmester
® (p. 96)
or BOSE
® (p. 98).
The analogue and digital twin-tuner offers
a broader range of radio reception. Other
elements include a CD/ DVD drive that
plays MP3 files and audio/video DVDs, a
USB port for various iPod
® and iPhone®
models, and USB memory sticks for MP3
music and MP3 players. The system also
allows you to display album covers (cover
art). Devices connected via USB can be
operated using CDR Plus or the optional
multifunction steering wheel. An addition -
al AUX-In port can be used to connect
other external audio sources – the sys -
tem is then operated via the connected
device.
Optional for the Cayenne, Cayenne
Diesel, Cayenne S, Cayenne S Hybrid
and Cayenne GTS.
Porsche Communication Management
(PCM) with navigation module.
PCM is the central control system for
all information and communication
functions. It is powerful and versatile,
yet easy to use.
Key features include a 7-inch high-
resolution touchscreen display. As
before, you can also operate PCM using
the rotary push-button control. The
menu layout is extremely clear, with no
more than five entries per page enabling
fast and accurate operation. A help
function is displayed at the bottom
of the screen for further guidance in
specific situations. Radio functions comprise 42 presets,

an FM t win-tuner with RDS frequency
diversity, which continuously searches
the airwaves for the best possible
signal from the selected radio station,
and dynamic autostore.
The CD/ DVD drive plays CDs and audio
DVDs and is MP3- compatible. Audio play -
back of video DVDs is also supported.
An optional integrated six- disc CD/ DVD
autochanger is available for PCM. The
universal audio interface can be used to
store and play up to 5,000 MP3 music
files on the 40GB hard drive integral to
PCM.
A navigation module with high-speed
hard drive is included with PCM. The
map display offers a conventional 2D
layout as well as a perspective view.
In some regions, even topography with superimposed satellite map and buildings
can be displayed in 3D. In split-screen
mode, you can view the current map sec
-
tion together with a list of icons for the
next manoeuvre. The route is calculated
based on official traffic reports (TMC)
and data from further traffic flow sensors
(TMC Pro).1) The system also indicates
the respective speed limit for the roads
covered in the database via PCM or the
TFT display in the instrument cluster.
In conjunction with the optional online
services, online destinations can also
be easily imported into the navigation
system.
Standard on the Cayenne Turbo.
Optional for all other Cayenne models.
Porsche Communication Management (PCM) incl. navigation module with cover ar t functionalit y1) TMC Pro is suppor ted in Germany, Austria and
Switzerland.