
Controls, Instruments
37
Operating with the remote control of the
vehicle keyEach remote control (up to six) can be assigned an
individual seat and door mirror position.
The stored seat and door mirror position is set au-
tomatically when the vehicle is unlocked using the
corresponding remote control.
Storing seat position
1. Switch the ignition on with the desired vehicle
key.
Reverse gear must not be engaged.
2. Set the desired seat and door-mirror positions.
3. Keep memory button M depressed and
additionally press key button 1.
The individual setting is now assigned to this
remote control and to the key button.Storing individual lowered position of the
passenger’s door mirror as a parking aid
Once the driver's seat setting has been stored, an
individual lowered position of the passenger's
door mirror may be stored for driving in reverse:
1. Apply the handbrake.
2. Switch the ignition on with the desired vehicle
key.
3. Engage reverse gear.
4. Select passenger side with mirror switch.
The passenger’s mirror swivels downwards.
5. Set passenger’s door mirror to desired final
position.
6. Keep memory button M depressed and
additionally press key button 1.
The individual setting is now assigned to this
remote control and to the key button.Recalling seat position
fUnlock the locked vehicle or the luggage
compartment with the remote control.
The stored seat position is automatically set.
The seat position assigned to a remote control
can also be recalled with the key button 1 if the
corresponding key was used to switch on the
ignition.
If no seat position has been assigned to a remote
control, the key button will not work.
Note on operation
Automatic seat adjustment can be interrupted
immediately:
– by switching on the ignition,
– by pressing the central locking button,
– by pressing any memory or seat adjustment
button.
Clearing the stored seat position
1. Switch the ignition on with the desired vehicle
key.
2. Press memory button twice and key button 1
once consecutively.

46
Controls, Instruments fUsing accessories not approved by Porsche
can cause the weight sensing system to be im-
paired.
fDo not squeeze objects, such as the fire extin-
guisher, or first aid kit under the seat.
fOnly have seats removed and installed by an
authorized Porsche dealer so that weight sens-
ing components will not be damaged.
fGive your passenger all of the information in
this chapter.
Note
Airbag components (e.g. steering wheel, door lin-
ing, seats) may be disassembled only by an autho-
rized Porsche dealer.
When disposing of a used airbag unit, our safety
instructions must be followed. These instructions
can be obtained at any authorized Porsche dealer.
Function of the airbag systemThe front airbags are triggered during a frontal col-
lision of sufficient force and direction.
In the event of a side impact of corresponding
force, the side airbag on the impact side is
triggered.
The inflation process generates the amount of gas
required to fill the airbags at the necessary pres-
sure in fractions of a second.
Airbags protect the head and upper body, while si-
multaneously damping the motion of the driver
and passenger in the impact direction in the event
of a frontal impact or side impact.
Your vehicle is equipped with a crash sensing and
diagnostic module. This module will record the
use of the seat belt restraint system by the driver
and front passenger when the airbags and/or belt
tensioner work.Advanced Airbag
Your vehicle is equipped with a weight sensing sys-
tem for the passenger's seat in accordance with
U.S. Federal/Canadian Motor Vehicle Safety Stan-
dard 208.
Depending on the weight acting on the front pas-
senger's seat, the front passenger's airbag will au-
tomatically be switched on and off.
Depending on the angle and force of impact, the
front passenger's airbag which is activated will be
triggered during a collision.
Precondition for switching the front passenger's
airbag on and off, depending on weight:
– Vehicles equipped with key-operated airbag
deactivation device:
Switch position AUTO.
– Ignition key is inserted.

58
Controls, Instruments
Parking Aids Parking assistantWhen the driver backs up, the parking assistant
system indicates the distance between the car
and a large obstacle behind it, by means of signal
tones.
Warning!
Risk of serious personal injury or death.
Parking assistant cannot detect small ob-
jects such as children and pets.
Despite use of the parking assistant system,
the driver is still responsible for taking due
care and assessing obstacles when backing
up.
fMake sure that no persons, especially small
children, animals or obstacles are within the maneuvring area.
The parking assistant system is activated auto-
matically when reverse gear is selected and the ig-
nition is on.
Note
Be aware that the parking assistant system is
not switched on if the car rolls backward without
reverse gear being engaged.
Ultrasound sensors
Sensors
Four ultrasound sensors in the rear bumper meas-
ure the distance to the closest obstacle.
– Range middle sensors around 60 in./150 cm
– Range outer sensors around 24 in./60 cm
Obstacles cannot be detected in the “blind” sen-
sor area (e.g. near the ground).
Note
The sensors must always be kept free of dust, ice
and snow in order to ensure that they are fully
functional.
Caution!
To avoid damaging the sensors:
fMaintain sufficient distance when cleaning with steam-jet units.

Controls, Instruments
61
Four-Wheel Drive With the four-wheel drive of the 911 Carrera 4 and
911 Carrera 4S, the engine power is variably dis-
tributed to the front and rear wheels.
Power distribution and wheel speed compensation
between the front and rear axles is realised with a
viscous multiple-disc clutch.
Distribution of the engine power is dependent
upon the wheel speed difference between the two
axles.
The viscous multiple-disc clutch always delivers
sufficient drive power to the front wheels (approx.
5% to 40%) to ensure optimum traction even on a
poor road surface.
In combination with the Porsche Stability Manage-
ment (PSM), four-wheel drive improves handling
and increases driving stability.
Warning!
The increased control that is provided should
not induce you to take greater risks with your
safety. The limits dictated by the laws of phy-
sics cannot be overcome, even with four-
wheel drive.
The risk of accidents due to inappropriate
speed cannot be reduced, even by four-
wheel drive.
The driver bears the responsibility for all dri-
ving maneuvers.
fAdapt your driving style to the prevailing road
and weather conditions.
fObey all traffic laws.
Dynamometer testing procedure Some U.S. states and Canadian provinces con-
duct emissions inspection/maintenance testing in-
volving the use of two-wheel dynamometer.
A two-wheeled dynamometer is a treadmill type
device upon which a single axle of the car, the dri-
ving axle of the vehicle, rotates to simulate vehicle
operation on the road while the vehicle remains
stationary.
Your 911 Carrera 4 or 911 Carrera 4S has a full-
time four-wheel drive system which cannot be
disabled. Severe damage to the powertrain can
result if tested on a two-wheel dynamometer.
Warning!
To avoid severe powertrain damage and a
possible unexpected movement of the vehic-
le.
fYour 911 Carrera 4 or 911 Carrera 4S vehicle
must never be tested on a two-wheel dynamo-
meter.
fAdvise the emission station of this warning be-fore testing the vehicle.
Power measurement
Power measurements on dynamometers are not
approved by Porsche.

Controls, Instruments
63
Retractable Rear SpoilerThe rear spoiler improves driving stability,
especially at higher speeds.
Warning!
Risk of accident. If the rear spoiler cannot be
extended, driving stability will be adversely
affected by increased rear axle lift, which
could lead to loss of control.
fAdapt your driving style and speed to the
changed driving behaviour.
fHave the fault remedied at an authorized
Porsche dealer.
Risk of injury during manual retraction or
extension of the rear spoiler with the vehicle
stationary.
fMake sure that no persons or objects are
within the range of movement of the rear
spoiler.
Risk of damage from pushing the vehicle by
the spoiler.
fDo not push the vehicle at the spoiler.
Automatic modeThe limits for automatic extension and retraction
of the spoiler depend on various circumstances
(e.g. driving speed, engine compartment temper-
ature).
Engine compartment temperature
under 122°F/55°C
Spoiler extends at 75 mph/120 km/h and
retracts at 37 mph/60 km/h.
Engine compartment temperature
over 140°F/60°C
Spoiler extends at 50 mph/80 km/h and retracts
at 19 mph/30 km/h.
If automatic control fails, a warning message is
displayed by the on-board computer.

Controls, Instruments
69
ABS Brake System
(Antilock Brake System)The ABS system represents a major contribution
to the enhancement of active safety in your vehi-
cle. This system prevents the wheels from locking
in a panic stop on almost all road surfaces. With the ABS system in your vehicle, the
following areas are enhanced:
Steering, vehicle remains steerable under all
braking forces when ABS is engaged.
Good directional control, no swerving caused
by locking of wheels under braking conditions.
Shorter stopping distance, stopping distances
are usually reduced because controlled braking is
maximized.
Prevention of wheel lock up, no brake- induced
sliding and thus no localized tire wear from emer-
gency braking.
The crucial advantage of the ABS system over a
conventional brake system is in the area of main-
taining directional control and maneuverability of
the car in emergency situations during normal driv-
ing, including panic braking in turns.
Warning!
The increased control that is provided should
not induce you to take greater risks with your
safety. The limits dictated by the laws of
physics cannot be overcome, even with ABS.
The risk of accidents due to inappropriate
speed cannot be reduced, even by the ABS.
The driver bears the responsibility for all
driving maneuvers.
fAdapt your driving style to the prevailing road
and weather conditions.
fObey all traffic laws.
Other vehicles not equipped with the ABS
system may not be able to maintain control,
especially on wet or poor road surfaces and
thus may be more likely to impact you from
behind.
fTo minimize that risk, use your ABS system to
increase your ability to maneuver to avoid dan-
gerous situations and not merely to try to stop in the shortest distance possible.

Controls, Instruments
71
Sport ModeA sportier car set-up is obtained when Sport mode
is switched on. Interventions by the Porsche
control systems are intentionally shifted towards
greater agility and driving performance.
– PASM (Porsche Active Suspension Manage-
ment) is automatically changed to Sport mode,
resulting in a stiffer suspension setup.
– The Tiptronic S switches to a sporty gear-
changing map and shortens the gear shifting
periods. Gear changes take place faster.
– PSM (Porsche Stability Management) control is
sporty. PSM interventions take place later than
in Normal mode. The driver can maneuver the
vehicle with greater agility at its performance
limits, without having to dispense with the
assistance of PSM in emergency situations.
– The electronic accelerator pedal reacts
sooner, and the engine is more responsive to
throttle inputs. When Sport mode is switched
on, this function is activated only after the
driver has floored the accelerator pedal or
released it briefly.
– The rpm limiter characteristic is “harder”, i.e.
the engine is immediately throttled when the
performance limits are reached (only in manual
selection mode for vehicles with Tiptronic S).
fPlease observe the appropriate chapters of
this Manual.
Switching Sport mode on and offfPress SPORT button in the center console.
When Sport mode is switched on, the light-
emitting diode in the SPORT button is lit.When Sport mode is switched on, the logo SPORT
appears next to the digital speedometer.
Switching Sport mode on and off simultaneously
activates and deactivates the Sport mode of the
PA S M .
If the Sport mode of the PASM was activated with
the PASM button, it will remain on.
After the ignition is switched off, Sport mode is
automatically reset to Normal mode.

72
Controls, Instruments
Porsche Stability Management
(PSM)PSM is an active control system for stabilization of
the vehicle during extreme driving manoeuvres.
The most recent version of PSM (only on vehicles
with four-wheel drive) improves the brake system
functionality.
Warning!
The increased control that is provided should
not induce you to take greater risks with your
safety. The limits dictated by the laws of
physics cannot be overcome, even with PSM.
The risk of accidents due to inappropriate
speed cannot be reduced, even by PSM.
The driver bears the responsibility for all
driving maneuvers.
fAdapt your driving style to the prevailing road
and weather conditions.
fObey all traffic laws. Advantages of PSM – Superior traction and lane-holding ability in all
driving situations – even on road surfaces with
varying friction.
– PSM actively stabilizes the vehicle during dy-
namic driving maneuvers (e.g. rapid steering
movements, during lane changes or on alter-
nating curves). – Improved braking stability in curves and on dif-
ferent or varying road surfaces.
– It improves the braking functions and shortens
the stopping distance if emergency braking is
needed (only vehicles with four-wheel drive).
Readiness for operationPSM is switched on automatically every time you
start the engine.FunctionSensors at the wheels, brakes, steering system
and engine continuously measure:
– Speed
– Steering angle
– Lateral acceleration
– Rate of turn about the vertical axis
– Brake pressure
PSM uses these values to determine the direction
of travel desired by the driver.
PSM intervenes and corrects the course if the
actual direction of motion deviates from the
desired course (steering-wheel position):
It brakes individual wheels as needed. In addition,
the engine power may be manipulated in order to
stabilize the vehicle.The events below inform the driver of PSM control
operations and warn him to adapt his driving style
to the road conditions:
– The multi-functional information light on the
instrument panel lights up.
– Hydraulic noises can be heard.
– The vehicle decelerates and steering-wheel
forces are altered as the PSM controls the
brakes.
– Reduced engine power.
– The brake pedal pulsates and its position is
changed during braking.
In order to achieve full vehicle deceleration,
foot pressure must be increased after begin-
ning of the brake pedal pulsing.