2013 PORSCHE CAYENNE brake sensor

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.

Comfort and transport | Driver assistance systems · 112
111 · Comfort and transport | Driver assistance systems
Speed limit indicator.
The speed limit indicator informs the
driver about speed restrictions, restric -
tions on overtaking and when these
no longer apply, which is recorded using
a camera.
Information is shown on the colour TFT
display in the instrument cluster and
via PCM. If the driver misses a traffic
sign – e.g. due to heav y rainfall or
darkness – the speed limit stored in
the navigation module is automatically
displayed.
This leaves the driver free to focus on
the road ahead.
Optional for all Cayenne models.
Speed limit indicator
Adaptive cruise control with
Porsche Active Safe (PAS).
Optional on all Cayenne models, adaptive
cruise control regulates the speed of your
vehicle in line with that of the ve hicle in
front. To do that, the system uses a radar
sensor in the central air intake to monitor
the road up to 200 m ahead.
If you approach another vehicle that is
travelling slower than your selected
cruising speed, the system slows the
engine or gently applies the brakes.

This continues until the distance that
you have preset is maintained. If heavier
braking is required, the driver has to

actively intervene. Your vehicle will
now follow the one in front at a reduced
speed.
If the other vehicle decelerates further,
adaptive cruise control will continue to
reduce your speed – even down to a halt.
When the road ahead is free once more,
the car automatically returns to your
selected cruising speed between 30 and
210 km/ h. To pull away after an auto -
matic stop, simply use the control lever
or depress the accelerator pedal.
If selected by the driver, the integrated
Stop & Go function automatically applies
the brakes and then drives off again in
congested traf fic.
For added safet y, the system also
features integrated Porsche Active Safe
(PAS). The system visually and audibly
alerts the driver in the event of a sudden
decrease in distance and briefly tugs
on the brakes. It can also intervene in
the braking process and apply increased
braking pressure through to all- out emer -
gency braking, if required.
Optional for all Cayenne models.
Adaptive cruise control

155 · IndexIndex · 155
Index
Drive systems 28
‘Coasting’ 21
Electric machine 28
Hybrid module 28
Parallel full hybrid 28
Performance 31–36
Engine technology 38
Air intake system 42
Auto start/stop function 38
Common-rail injection system 40
Cooling systems 40
Direct fuel injection (DFI) 40
Engine management (electronic) 42
E-power button 30
Exhaust system 43
High-voltage battery 30
Lubrication 41
Sports exhaust system 43
Supercharging system 42
Turbocharging systems 42
Variable Turbine Geometry (VTG) 42
Variable valve timing 39
VarioCam Plus 39
Transmission 44
All-wheel drive 47
Anti-slip regulation (ASR) 47
Automatic brake differential (ABD) 47
Downhill assistance 48
Manual gearbox 44
Porsche Traction Management (PTM) 47
Tiptronic S 44
Off-road capability 50
Chassis 52
Air suspension 54
Front axle 53
Porsche Active Suspension
Management (PASM) 57
Porsche Dynamic Chassis Control
(PDCC) 55
Porsche Torque Vectoring Plus
(PT V Plus) 56
Power steering Plus 53
Rear axle 53
Self-levelling 54
Steel-spring suspension 54
Steering 53
Tyre Pressure Monitoring (TPM) 58
Ty r e s 5 8
Weight reduction 53
Wheels 58
Safety 62
Active safet y 62
Airbags 70
Anti-lock braking (ABS) 68
Automatic headlight activation 62
Automatic hold function 65
Bodyshell 71
Braking systems 65
Ceramic brakes 66
Cornering lights 63
Day time running lights 63
Headlights 63
Interior safety features 70, 71
ISOFIX 71
Lighting 62
Parking brake (electric) 65
Passive Safet y 70
Porsche Active Safe (PAS) 110
Porsche Ceramic Composite Brake
(PCCB) 66
Porsche Dynamic Light System
(PDLS) 63
Porsche Dynamic Light System Plus
(PDLS Plus) 63
Porsche Side Impact Protection
(POSIP) 70
Porsche Stabilit y Management (PSM) 68
Recuperation 66
Seat belt system 70
Taillights 63
Environment 72
Exhaust emissions 74
Fuel economy 75
Fuel system 75
Lightweight construction 72
Materials 77
Noise 77
Recycling 77
Ser vicing 77
Comfort 80
Adaptive sports seats 84
Anti-theft protection 102
Audio systems 90
Bluetooth
® 92, 93
BOSE
® Surround Sound System 98
Burmester
® High-End Surround
Sound System 96
CD/ DVD autochanger 90
CDR/CDR Plus audio system 90
Child seats 87
Climate control 100
Comfort memory package 84
Comfort seats 84
Compass display 80
Digital radio 95
Driver memory package 84
Electronic logbook 95
GTS sports seats 84
Heat and noise-insulating glass 100
Heated windscreen 100
Interior 80
Interior lighting 88
Mobile phone preparation 93
MP3 90, 91, 93
Multifunction steering wheel 80Navigation system
90
On-board computer 80
Online services 94
Panoramic roof system 104
Porsche Communication
Management (PCM) 90
Porsche Entry & Drive 102
Porsche Rear Seat Entertainment 88
Porsche Vehicle Tracking System
( P V T S) 10 2
Privacy glass 100
Radio 90
Rain sensor 102
Rear seats 87
Seat ventilation 85
Seat/steering wheel heating 85
Seats 84
Sport Chrono Package 95
Storage compartments 88
S u n r o o f 10 4
S u n s c r e e n 10 2
Telephone module 92
Touchscreen display 90
T V tuner 88, 92
Universal audio interface 93
USB port 90, 93
Voice control 93
Driver assistance systems 106
Adaptive cruise control with PAS 110
Automatic headlight activation 62
Automatically dimming mirrors 106
Comfort lighting package 100
Cruise control 106
Lane Change Assist (LCA) 109
Lane Departure Warning (LDW) 108
P a r k A s s i s t 10 6
Reversing camera 106
Speed limit indicator 111
Tr a n s p o r t 112
Loading Level 113
Loading options 112
Loadspace management system 117
Luggage compartment 112
Roof rails 115
Roof transport system 115
Tailgate (automatic) 113
Towbar systems 117
Personalisation 118
C o l o u rs 120
Exterior 120
I n t e r i o r 122–127
Porsche Exclusive 140
Factory collection 141
Panorama 142
Technical data 146