2014 PORSCHE 911 brake sensor

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It is possible to have a lot of power yet not
be able to use it. Only by using your power
intelligently will you truly progress – and
with consummate ease.
Porsche Traction
Management (PTM) is
standard on all 911 Carrera all-wheel-drive
models. It is an active all-wheel- drive
system with an electronically variable
map-controlled multi-plate clutch,
automatic brake differential (ABD) and
anti-slip regulation (ASR). Drive power is distributed bet ween the
permanently driven rear axle and the
front axle by means of the electronically
variable multi
-plate clutch.
The status of the vehicle is continuously
monitored so that it is possible to respond
to different driving situations. Sensors
are used to collect a range of data, includ -
ing 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 begin
to lose traction under acceleration, a
greater proportion of the drive power
is automatically transmit ted to the front
axle by a more positive engagement of
the multi-
plate clutch. In addition, ASR
prevents wheel spin by adapting the
engine’s power output. During cornering,
the optimal level of drive power is
dis
tributed to the front wheels to ensure
excellent lateral stability. In conjunction with Porsche Stability
Management (PSM), PTM helps to ensure
the perfect distribution of drive power for
optimum traction in most road scenarios,
whether on long straights, through tight
corners, or on surfaces with different
friction coefficients.
Far better than a power struggle
is power interplay.

Porsche Traction Management (PTM).
T
emperament | Transmission

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Wheels.
The 911 Carrera models are equipped
with 19-inch Carrera wheels as standard.
These are light weight alloys featuring a
classic sport y design. Tyre sizes are
235/40 ZR 19 and 285/35 ZR 19 at the
front and rear, respectively. All-wheel-
drive models are fit ted with even wider
295/35 ZR 19 t yres at the rear.The S models are equipped with light-
alloy 20 -inch Carrera
S wheels as
standard. The visual effect is sport y and
dynamic. The t yres are slightly wider to
cope with the increased power output of
these models: 245/35 ZR 20 at the
front, 295/30 ZR 20 at the rear. All-
wheel-drive models have 305/30 ZR 20
t yres at the rear.
The large t yre size improves both ride
comfort and track performance. Rolling
resistance, dry braking distances and t yre
weight are all comparatively low, thereby
helping to reduce fuel consumption.
A selection of 20 -inch wheels is available
in our range of options.
Tyre Pressure Monitoring (TPM).
Integrated as standard, Tyre Pressure
Monitoring (TPM) sends warnings to the
on-board computer’s display screen in
the event of low t yre pressure or a
gradual or sudden loss of pressure. The
individual pressures in all four t yres can
be displayed in the instrument cluster.
Porsche Stability Management (PSM).
As standard, the 911 Carrera models are
equipped with enhanced Porsche Stability
Management (PSM), which maintains sta -
bilit y even at the limits of dynamic driving
performance. Sensors continuously moni -
tor the direction, speed, yaw velocit y and
lateral acceleration of the car. Using this
information, PSM is able 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.
Under acceleration on wet or low-grip
road surfaces, PSM improves traction
using the automatic brake diffe
rential
(ABD) and anti -slip regulation (ASR).
When the SPORT PLUS mode of the
optional Sport Chrono Package is selected,
the PSM threshold is raised to allow a
sportier driving style.
For an even more dynamic experience,
you always have the option to deactivate
PSM. It is automatically reactivated,
for your safet y, only if you brake harder
and either of the front wheels (in SPORT
PLUS mode, both of the front wheels) requires ABS assistance. ABS and ABD,
however, remain active at all times.
PSM therefore offers a high level of

driving stability and safety combined
with extraordinary agilit y. It ’s an
apparent contradiction in terms, but an
intrinsic part of the Porsche identit y.
19 -inch Carrera wheel (standard on
the 911 Carrera models)
20-
inch Carrera S wheel (standard on
the 911 Carrera S models) 911 Carrera 4 Cabriolet with 20-inch Carrera Classic wheels
T
emperament | Chassis and body
For fuel consumption, CO2 emissions and efficiency class, please refer to pages 141/143.

7879
Composure
| Safet y
Electric parking brake.
The electric parking brake, which you
can activate and deactivate manually,
releases automatically as you pull away.

With the hill-
hold function, you can
pull away without ever rolling back.
The system automatically detects when
the vehicle has come to a halt on an
uphill gradient requiring intervention.
PSM then maintains the brake pressure
at all four wheels to prevent the vehicle
from moving in the opposite direction.
Airbags.
The 911 Carrera models offer advanced
airbag technology in the form of full-size
driver and front passenger airbags, which
are inflated in t wo stages depending
on the severit y and t ype of accident (e.g.
frontal or offset frontal). In less serious
accidents, the airbags are only partially
inflated, thereby minimising discomfort
to the occupants. In addition to the central airbag control
unit on the transmission tunnel, a pair of
impact sensors are located near the
headlights. This allows a crash to be
detected and evaluated not just sooner,
but with even greater accuracy.
Porsche Side Impact Protection
System (POSIP).
Coupé or Cabriolet, the 911 models

are equipped as standard with the
Porsche Side Impact Protection System
(POSIP). It comprises side impact
protection elements in the doors and t wo airbags on each side. An integral
thorax airbag is located in each seat side
bolster, while the door panels each
contain an upwards-inflating head airbag.
Each thorax airbag has a volume of
10 litres and each head airbag 15 litres,
ensuring excellent protection in the event
of a side impact.
Cabriolet roll-over protection concept.
Despite their low weight, the 911 Carrera

Cabriolet models have exemplary
torsional rigidit y and flexural strength.
Body flexing is minimal even on irregular
road surfaces.
Increased protection is provided by
an automatically deploying roll-over
protection system if the car were to
overturn. Two spring-loaded roll-over
bars are neatly incorporated behind
the rear seats. The roll- over sensor
continuously monitors the car’s pitch
and roll, contact with the road, as
well as lateral and longitudinal forces.
If the car were to overturn, the roll- over
bars would be deployed instantly.

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Composure
|
Comfort
Climate control.
The 911 models feature t wo -zone
automatic climate control as standard
with an enhanced ventilation effect and
separate temperature controls for the
driver and front passenger. The available
air conditioning modes are gentle,
normal and strong.
An active carbon filter traps particles,
pollen and odours and an automatic
air-recirculation function permanently
monitors air quality, reduces humidity
and switches from fresh to recirculated
air when required. A demister function
keeps the windows clear in cold weather. In warmer weather, a solar sensor helps
the climate control
to detect strong
sunlight and automatically
compensate
for the comfort of both the driver and
front passenger.
HomeLink® (programmable garage
door opener).
As an option, it is possible to have
a programmable garage door opener
integrated into the overhead console.
At the push of a but ton, it controls up
to three different garage doors, lighting
systems or alarm systems.
Many things have practical qualities.
Even more have a sporty function.
And some are just extremely convenient.

Additional comfort and convenience features.
Cruise control.
This automatic speed control function is
available as an option. For greater driver
comfort on long stretches of road, cruise
control operates in the 30 –240 km/ h
speed range and is activated using a but -
ton on the steering column control stalk.

Light design package.
The optional light design package is both
practical and aesthetically appealing.
It comprises dimmable LEDs in the over -
head console and in the areas of the
door pulls, door storage compartments,
front foot wells and rear seats.
‘Welcome Home’ lighting.
For convenience, particularly at night,
the ‘Welcome Home’ lighting function
automatically switches on the LED day -
time running lights for a defined period
whenever the vehicle is opened or
closed using the key remote.
A customisable delayed switch- off timer
keeps the day time running lights, the
taillights and, where applicable, the
courtesy lights switched on until you
reach your front door.
Adaptive cruise control with Porsche
Active Safe (PAS).
Available as an option, this cruise control
function regulates your speed according
to the distance bet ween your vehicle and
the vehicle in front. A radar sensor moni -
tors the road ahead up to a distance of
200 m. If you have set a cruising speed
but have begun to gain on the vehicle in front because it is driving more slowly,
this is detected by the radar sensor.
The system now reduces the speed

of your vehicle at a maximum rate of
3.5 m/sec
2 by restricting the throt tle
or by applying the brakes appropriate
to the prevailing situation until the dis -
tance that you have preset is maintained.
Your vehicle will now continue at a reduced speed. If the other vehicle

decelerates further, adaptive cruise
control will continue to reduce your
cruising speed – even down to a halt. For additional safet y, if the system detects
that the distance from the vehicle in front
is decreasing, it will also prepare your
vehicle for braking by precharging the
braking system so that the brake pads are already in light contact with the
brake discs. However, drivers still have
to perform heavier braking themselves.
As soon as the road ahead clears again,
your vehicle will accelerate back up to
the cruising speed originally set.
If your vehicle approaches the vehicle
in front too quickly, Porsche Active Safe
(PAS) will issue audible and visual warn
-
ings. In addition, the system briefly jerks
the brakes and if necessary initiates
target braking, with any braking pressure
applied by the driver being increased
within certain system limits.
Adaptive cruise control display
Radar sensor of adaptive cruise control

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#
‘911’ logo 126
A
Adaptive cruise control 91
Airbags 78
Anti-theft protection 95
Audio interface, universal 96, 98
AudioPilot
® 101
Auto start/stop function 41
B
Bi-Xenon headlights 81
Body 52
BOSE
® Surround Sound System 101
B r a k e s 74
Burmester
® High-End Surround
Sound System 102
C
Cataly tic converter 44, 115
CD/ DVD autochanger 96
CDR audio system 96
CDR Plus audio system 96
Chassis 52
Climate control 90
Coasting 49
Colours
Exterior 120
Interior 122
Comfort 82
Communication 96
Cruise control 90
D
Digital radio 98
Direct fuel injection (DFI) 42
Dry-sump lubrication, integrated 44
Dynamic engine mounts 67
E
Electrical system recuperation 41
Emission control 115
Engine management, electronic 45
Engineered body design 54
Engines 36
3.4-litre boxer engine 38
3.8-litre boxer engine 38
E n v i r o n m e n t 112
Exhaust system 44
Exterior mirrors and rear-view mirror 92
F
Factory collection 135
Front axle 55
Fu e l 115
Fuel consumption 115
Fuel system 115
H
Headlight cleaning system 81
HomeLink
® (programmable
garage door opener) 90
Hood 56
I
I numbers 126
Instruments 85
Intake manifold 44
K
Knock control, cylinder-specific 45
L
Leather 122, 131
LED main headlights 81
Light design package 90
Lights 80
Logbook, electronic 99
Luggage compartment 94
M
Manual gearbox 46
M a t e r i a l s 115
Memory package 88
Mobile phone preparation 99
Models 18
Motorsport 106
O
On-board computer 85
On-board diagnostics 45
Online services 100
P
Panorama 136
Park Assist 92
Parking brake, electric 78
Performance display 67
Personalisation 118
Porsche Active Suspension
Management (PASM) 60
Porsche Ceramic Composite Brake
(PCCB) 76
Porsche Communication
Management (P CM) 97
Porsche Doppelkupplung
(PDK) 48
Porsche Dynamic Chassis Control
(PDCC) 62
Porsche Dynamic Light System
(PDLS) 81
Porsche Dynamic Light System Plus
(PDLS +
) 81
Porsche Entry & Drive 94
Porsche Side Impact Protection
System (POSIP) 79
Porsche Stabilit y Management (PSM) 69
Porsche Torque Vectoring (PT V) 70
Porsche Torque Vectoring Plus
(PT V Plus) 70
Porsche Traction Management (PTM) 50
Porsche Vehicle Tracking System
(PV TS) 95
Power steering 64
Power steering Plus 64
R
Rain sensor 92
Rear axle 55
Rear differential lock 70
R e c y c l i n g 115
Reversing camera 92
Roll-over protection 79
Roof transport system 94
S
S a f e t y 74
Seat heating 89
Seat ventilation 89
Seats
Adaptive Sports seats Plus 88
Child seats 89
Fully electric Sports seats 88
Rear seats 89
Sports bucket seats 89
Sports seats 88
Sports seats Plus 88
Slide/tilt sunroof 93
Slide/tilt sunroof, glass 93
Sound Package Plus 96
Speed limit indicator 99
SPORT but ton 65
Sports chassis 61
Sport Chrono Package 65
SportDesign exterior mirrors 127
Sports exhaust system 44
SPORT PLUS but ton 65
Steering 64
Steering wheel heating 87
Steering wheels
Multifunction steering wheel 86
SportDesign steering wheel 87
Sports steering wheel 86
Stereo Lambda control circuits 115
Surround sound system 101
T
Technical data 140
Telephone module 98
TFT display 85
Thermal management 41
Transmission 46
Trim strip in a high-gloss finish 126
T V tuner 99
Tyre Pressure Monitoring (TPM) 68
Index.
V
VarioCam Plus 42
Voice control system 99
W
‘Welcome Home’ lighting 90
Wheels 68
Wind deflector, electrically powered 58