sensor PORSCHE 911 CARRERA 2011 6.G Information Manual

2829
When you know your strengths,
it’s easy to acquire new ones.

The new 911 Carrera 4.
One thing is for certain. When it comes
to finding your own strengths, it always
helps to know who you are and where
you come from. Where the 911 is con­
cerned, we call this Porsche identit y.
The immense power that is embodied in
this strong identit y is immediately apparent
in the new all ­wheel ­drive 911 Carrera 4.
Its enhanced Porsche Traction Management
(PTM) converts power directly into motion.
Not in a heav y ­handed way, but intelligently.
Sensors control the rotational speeds of
all four wheels, the vehicle’s lateral and
longitudinal acceleration and the steering
angle. In this way, the active all ­wheel drive can continually respond to different
driving situations and precisely distribute
drive forces bet ween the front and rear
axles. Tuned to provide even more poised
and balanced handling during performance
driving, PTM quickly and clearly
demon ­
strates, especially in the wet and snow,
what we at Porsche understand by traction.
Expressed in simple terms, the new
911 Carrera 4 is self ­assured. An
assuredness that has been assisted by
engineering and aesthetic details such as
the wider body – the rear wings are 44 mm
wider than those of the Carrera 911 – the
295 mm wide rear t yres, the special air intakes, the illuminated rear light strip
with taillights and parking light function,
and distinctive sideskirts.
One of its inherent strengths is, of course,
its engine: the 3.4 ­litre flat ­six power unit
delivers 257 kW (350 hp) at 7,400 rpm
and accelerates the new 911 Carrera 4
from 0 to 62 mph in just 4.9 seconds.
Top speed is 177 mph. One strength
may possibly come as a surprise: by

downsizing the engine, it has been possible
to reduce the fuel consumption and CO
2
emissions by up to 15 % compared with
the previous model.
For fuel consumption and CO
2 emissions, please refer to pages 139/141.
Strength | The new 911 Carrera 4
Let ’s now bring the power of identit y
to bear on the road. With the aid of the
7 ­speed manual transmission or the
optional PDK. Both feature sports ratios
for gears 1 to 6 and a long ­ratio 7th
gear for fuel efficiency.
The 911 has many strengths. The new
911 Carrera 4, with its superlative traction,
dynamic performance and safet y, has
acquired even more. Why not take your
seat behind the wheel and make these
strengths your own?

4445
DFI delivers fuel directly into the combustion
chamber with millisecond precision. The
spray and cone angles of the multi­hole
injectors have been optimised for torque,
power output, fuel consumption, emissions
and ef ficient combustion.
With direct injection, the engine manage ­
ment system regulates injection timing
individually for each cylinder as well as
the injection rate for each cylinder bank.
This improves the combustion process
and fuel economy. operation to the prevailing conditions.
This results in instant acceleration,
extremely smooth running and an
extraordinary level of tractive power,

but with a comparatively low level of
fuel consumption.
For faster heating of the catalytic converters
after a cold start and optimum torque in
the upper load range, up to three injection
pulses take place per combustion cycle.
DFI improves the internal cooling of

the combustion chamber by having the
mixture prepared directly in the cylinder.
This allows for a higher compression
ratio, which helps to deliver more output
at the same time as enhanced engine
efficiency. Injection is regulated by the
electronic engine management system
and emissions are monitored by the
Lambda sensors.
Temperament | Engines
VarioCam Plus System.
VarioCam Plus is a two ­in ­one engine
concept for adjusting the intake
camshafts and switching the lift of the
intake valves.
The system first dif ferentiates bet ween
driver inputs that typify normal,
everyday driving and those inputs
that demand maximum performance.
The electronic engine management
system then seamlessly adapts valve
What lies between your home and Le Mans?
Advanced engineering as standard.

Direct fuel injection (DFI).
For fuel consumption and CO2 emissions, please refer to pages 139/141.

5253
T
emperament
| Transmission
It is possible to have a lot of power and
yet not be able to move any thing. Only
by using your power intelligently will you
truly progress – and with consummate
ease.
Enhanced 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).

6263
Temperament

| Chassis and body
PASM, the electronic damping control
system, is standard in the 911 Carrera S
models and available as an option for
the 911 Carrera models. It actively and
continuously regulates damping forces
according to driving st yle and road
conditions. In addition, the suspension
is lowered by 10 mm.
PASM has t wo modes, which can be
selected using a separate but ton on
the centre console: ‘Normal’, which is a
blend of performance and comfort, and
‘Sport ’ where the setup is much firmer. Sensors record the body movements

that accompany powerful acceleration,
braking or uneven road surfaces. In the
911, the number of sensors has been
increased for improved data acquisition
and even more ef ficient control interven­
tions. The PASM control unit evaluates
the driving conditions and modifies the
damping force on each of the wheels in
accordance with the selected mode.
In ‘Sport ’ mode, the suspension is set to
a harder damper rating. On uneven roads,
PASM immediately switches to a softer rating, thereby improving contact
bet ween the wheels and the road.

When the road surface improves, PASM
automatically reverts to the original,
harder rating. If ‘Normal’ mode is selected
and the driver’s st yle becomes more
assertive, PASM automatically switches
to a harder rating. Damping firms up,
and driving stabilit y and road safet y are
increased.
The results are tangible: increased
driving stability, improved comfort and
enhanced performance.
No need to let the laws of physics
spoil your fun.

Porsche Active Suspension Management (PASM).PASM sports suspension.
The PASM sports suspension is available
as an option for the 911 Carrera Coupé
models in conjunction with 20 ­inch wheels
and Porsche Torque Vectoring (PTV) or
Porsche Torque Vectoring Plus (PTV Plus). The ride height is 20 mm lower than

with the standard suspension or 10 mm
compared with the PASM suspension.
The springs are harder and shorter, and
the anti ­roll bars on the front and rear
axles are stiffer. The front spoiler lip has
a more sport y geometry, the rear spoiler extends even further. These not only

further reduce lift at the front axle, but
also provide downforce at the rear axle
for improved aerodynamics and even
better performance.

7071
Wheels.
The 911 Carrera models are equipped
with 19­inch 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 20­inch 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).
Tyre Pressure Monitoring (TPM) is avail­
able on request. This safet y system 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 differential
(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 st yle.
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)
20­inch Carrera S wheel (standard on the 911 S models)911 Carrera 4 Cabriolet with 20 ­inch Carrera Classic wheels
Temperament | Chassis and body
For fuel consumption and CO2 emissions, please refer to pages 139/141.

8081
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 far sooner and
with considerably 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 ele ­
ments 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 pro ­
tection 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 the most poorly sur ­
faced roads.
Increased protection is provided by an
automatically deploying roll ­over protec ­
tion 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.

9293
Composure
| Comfor t
Climate control.
The 911 models feature t wo
­zone auto ­
matic climate control as standard with
an enhanced ventilation effect and sepa ­
rate 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.
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
­of f timer
keeps the daytime running lights, the
taillights and, where applicable, the
courtesy lights switched on until you
reach your front door.
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 18–149 mph
speed range and is activated using a but ­
ton on the steering column control stalk.
Adaptive cruise control with Porsche
Active Safe (PAS).
1)
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 gently applying the brakes, until
the distance 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 control1) Available from November 2012 at the earliest.

9495
Composure
| Comfor t
Slide/tilt sunroof.
The electrically adjustable slide/tilt sun
­
roof is available as optional equipment
for all 911 Carrera models. It opens out ­
wards so that it does not interfere with
headroom. Another advantage of the
novel design is the large aperture for
increased driving pleasure under the
open sky.
The two ­position net ­type wind deflector
protects against draught and further
reduces wind noise.
Glass slide/tilt sunroof.
The electrically adjustable slide/tilt sun ­
roof is also available in tinted single­
glazed safet y glass. An integral electric
sunblind provides shade from unwanted
bright light. It is available in five different
colours. The design, headroom and aper ­
ture of the glass roof are identical to
those of the regular slide/tilt sunroof. The
only difference is that, even when closed,
the glass sunroof still gives you that
open ­to ­the ­sky feeling.
ParkAssist.
Park Assist is fit ted as standard in the
911 Carrera Cabriolet models and is
available as an option for the 911 Carrera
Coupé models. Featuring four inconspicuous
sensors in the rear end, the system
audibly alerts the driver to the presence
of obstacles detected behind the vehicle.
An intermittent warning tone increases in
rapidit y as the obstacle is approached.
An enhanced version of Park Assist, with
four sensors in the front end, is available
as an option. The audible alert is supple ­
mented by a visual warning in the central
display screen, which shows a graphical
representation of the vehicle from over ­
head.
Exterior mirrors and rear-view mirror.
Electrically adjustable exterior mirrors
are fitted as standard. Electrically folding
exterior mirrors with courtesy lighting
on both sides of the
vehicle are available
as an option. By
illuminating the area in front of the doors, they make it easier to
find your way in the dark.
An auto
­dimming function for the rear ­
view mirror and exterior mirrors, with
an integrated rain sensor for the wind ­
screen wipers, is available as an option.
Luggage compartment.
The luggage compartment volume in the
911 models is 135 litres – 125 litres on
the 911 Carrera all ­wheel ­drive models.
The luggage compartment is fully trimmed
in scratch ­resistant materials.
Roof transport system.
Available as an option for the Coupé
models, the roof transport system in
aluminium is aerodynamically efficient,
very light weight and easy to fit. A range
of at tachments is available, such as a
roof box, a bike carrier or a ski/snow ­
board carrier. Maximum roof load is
75 kg.

9899
Composure
| Comfor t
Porsche Communication Management
(PCM) including navigation module.
Porsche Communication Management
(PCM) is standard for all 911 models.

Powerful, multifunctional and easy to

use, PCM is your control centre for audio,
navigation and commu nication functions. The main feature is the intuitive 7
­inch
touchscreen. Alternatively, you can choose
to operate PCM using conventional rotary
pushbut ton controls. With a maximum of
five list items per page, the screen dis ­
play is very clearly presented. A useful
help function is displayed at the foot of
the screen. Radio functions include up to 42 memory
presets and an FM dual tuner frequency diversit y with RDS, which continuously
scans in the background for the best
signal, and a dynamic autostore.
The DVD ­audio drive plays CDs and audio
DVDs and is MP3 ­compatible. Audio
playback of video DVDs is also supported. A six
­disc CD/ DVD autochanger integrated
into PCM is available as an option.
The standard ­fitted universal audio inter ­
face (AUX) in the glove compartment
enables you to connect your iPod
® or
any audio source. Recharging is also
supported. Once connected, your iPod
®
or USB stick is then conveniently and
safely operated via the PCM, the optional
multifunction steering wheel or the
optional voice control system.
You can download the performance dis ­
play data from the Sport Chrono Package
and data from the electronic logbook
via the USB port. You can also transfer
up to 10,000 tracks in MP3 format to
the internal hard drive (or Jukebox)
1) of
the PCM and play them from there. Pod ­
casts and audiobooks are recognised
and played and cover art is displayed.
Further details are available from your
Porsche Centre.
Universal audio interface
The navigation module in PCM features
a high ­speed hard drive and allows you to
choose bet ween a 2D display and a 3D
perspective. In some regions, it is possi ­
ble to display the terrain (with an overlaid
satellite map) and buildings in 3D. Split
screen mode enables you to view
t wo
functions at once, such as the current

navigation map and a list of symbols that
represent the next driving manoeuvre.
The navigation module also has a dynam ­
ic route guidance function which takes
into account official traffic messages
(TMC) and additional traffic flow sensors
(TMC Pro).
2)
1) Available from November 2012 at the earliest.2) TMC Pro is currently available in Germany, Austria
and Switzerland. Porsche Communication Management (PCM) including navigation module

116117
Responsibility
|
Environment
Exhaust emission control.
Vehicles manufactured by Porsche
demonstrate that even high ­performance
sports cars can achieve moderate
fuel consumption and exhaust emission
values in their respective category.
This is achieved, on the one hand, through
the use of fuel ­ef ficient technologies such
as auto start /stop, thermal management,
electrical system recuperation, direct fuel
injection, VarioCam Plus and, in conjunction
with optional PDK, coasting mode.
On the other hand, new cataly tic convert ­
ers developed for the 911 provide efficient
emission control.
The stereo Lambda control circuitr y
controls and monitors each cylinder bank
separately. For each exhaust tract,
oxygen sensors regulate the composition of the exhaust gas, while another Lambda
sensor on each cylinder bank monitors
pollutant conversion in the respective

cataly tic converter.

Fuel economy and recycling.
Intelligent light weight construction has
been fundamental to the Porsche identit y
since 1948, for both technical and
ecological reasons. This forms the basis
for achieving low fuel consumption
values in conjunction with outstanding
performance.
On the technical side, we use a high
proportion of aluminium, magnesium,
plastics and super ­high ­strength sheet
steel. The materials used have been
selected for their ability to withstand
load, yet they are considerably lighter
than conventional steel.
On the ecological side, all materials used
are meticulously selected. All synthetic
components are easily recyclable and each
material is labelled to facilitate its separa ­
tion for recycling. The reduction in the
number of plastic variants helps to ensure
more ef ficient recycling. Recycled plastics
are used where they meet our exacting
technical requirements.
In short, the 911 is around 95 % recyclable.
In addition, Porsche uses a high propor ­
tion of environmentally friendly water ­
based paints. For us, environmental
protection does not begin at the end of
a vehicle’s life. It starts at the planning
and development stage.

Fuel.
All Porsche models – including the 911 –
are designed to operate on fuels with an
ethanol content of up to 10 %, e.g. ‘E10’.
Ethanol has a positive impact on the CO
2
balance since the plants grown for the
production of this biofuel also absorb
CO
2 from the atmosphere.
The release of hydrocarbons from the
fuel system has been minimised thanks
in no small part to the active carbon filter
and the multilayered material from which
the fuel tank is made. All fuel lines are
made from multilayered plastic, steel or
aluminium.
For fuel consumption and CO
2 emissions, please refer to pages 139/141.