light PORSCHE 911 2009 5.G Service Manual

Operation, Safety
67
– The system compensates for undesired lateral
vehicle reactions when the driver releases the
accelerator pedal or brakes when cornering.
This compensation functions up to the
maximum lateral acceleration.
– PSM actively stabilizes the vehicle as required
during dynamic driving maneuvers (e.g. rapid
steering movements, during lane changes or
on alternating bends).
– Improved braking stability on bends and on
different or varying road surfaces.
– It improves braking function and shortens
stopping distance in the event of emergency
braking.Readiness for operationPSM is switched on automatically every time you
start the engine.
PSM should always be switched on during
“normal” driving.
However, it may be advantageous to switch off
PSM temporarily in exceptional situations, for
example:
– On a loose surface or in deep snow,
– When “rocking” the vehicle free and
– When using snow chains.
Switching off PSMfPress PSM OFF button.
PSM is switched off after a short delay.
The light-emitting diode in the button is lit up.
When the PSM is switched off, the PSM multi-
functional light on the instrument panel is lit
and a message is shown on the on-board
computer.
An acoustic signal also sounds.
Note
When PSM is switched off, the additional braking
functions are deactivated. Automatic reactivation
in emergency situations is linked to the PSM
control.The following functions stabilize the vehicle in
emergency situations, even with PSM switched
off:
– When PSM is off, the vehicle is stabilized as
soon as one of the two front wheels enters the
ABS control range.
– When PSM is off and Sport mode is on, the
vehicle is stabilized as soon as both front
wheels enter the ABS control range.
One-sided spinning of the wheels is prevented,
even with PSM switched off.
Switching PSM back onfPress PSM OFF button.
PSM is switched on after a short delay.
The light-emitting diode in the button and the
PSM multifunctional light on the instrument
panel go out.
The on-board computer shows a message.

68
Operation, Safety
Sport modeA sportier car set-up is obtained when Sport or
Sport Plus mode is switched on.
PSM interventions are later than in Normal mode;
the vehicle can be maneuverd with greater agility
at its performance limits, without dispensing with
the assistance of PSM in emergency situations.
This helps to achieve optimal lap times, particu-
larly on race circuits and a dry road surface.
– The multifunctional light on the instrument
panel lights up for a lamp check when the
ignition is switched on.
– The light indicates a control operation by
flashing, including when PSM is switched off
(brake control in the event of one-sided wheel
spin).
– In conjunction with a message on the on-board
computer, the light indicates that PSM is
switched off.
An acoustic signal also sounds.
– The light indicates a fault in conjunction with a
message on the on-board computer.
PSM is out of order.fPlease have the fault remedied at an author-
ized Porsche dealer.
fPlease see the chapter “PUTTING VEHICLE
INTO OPERATION” on Page 263.
TowingfPlease see the chapter “TOWING” on
Page 280.Checks on test standsBrake tests
Brake tests must be performed only on plate-type
test stands or roller test stands.
The ignition must be switched off.
The following limit values must not be exceeded
on roller test stands:
– Testing speed 5 mph (8 km/h)
– Test duration 20 seconds
Handbrake tests
Handbrake tests on the roller test stand must be
performed only with the ignition switched off.
PSM multifunctional light

Operation, Safety
69
PASM makes two running-gear setups available to
the driver: “Normal” and “Sport”.
The selection is made via a button on the center
console.
In Normal mode the running gear is in a comfort-
able setup.
Sport mode offers very sporty shock absorber
tuning.
The variable suspension system selects the appro-
priate damping level for each wheel according to
the situation and driving conditions.
Example:
If the vehicle is driven in a very sporty manner in
Normal mode, PASM automatically adapts the
shock-absorber behavior to the driving situation
accordingly.
Switching on PASM Sport modefPress PASM button in the center console.
When PASM Sport mode is switched on, the
light-emitting diode in the button is lit up and a
message is shown on the on-board computer.Switching off PASM Sport modefPress PASM button in the center console.
The light-emitting diode in the button goes out
and the on-board computer displays a
message.
After the ignition is switched off, PASM is
automatically reset to Normal mode.
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 behavior.
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.
Porsche Active Suspension
Management (PASM)

70
Operation, Safety
Automatic modeThe limits for automatic extension and retraction
of the spoiler depend on various circumstances
(e.g. driving speed, engine compartment temper-
ature).
If automatic control fails, a warning message is
displayed by the on-board computer.
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.
When the ignition is on, the rear spoiler can be
extended and retracted manually using the button
in the center console.
Extending
fPress button briefly.
The spoiler extends to its final position.
The light-emitting diode in the button lights up.Retracting a manually extended rear spoiler
fat speeds between 0 and 20 mph
(0 and 30 km/h)
Press and hold button until the rear spoiler has
reached its final position.
The light-emitting diode in the button goes out.
The rear spoiler changes to automatic mode.
fat speeds between 20 and 60 mph
(30 and 100 km/h)
Press button briefly.
The rear spoiler retracts, the light-emitting
diode in the button goes out.
The rear spoiler changes to automatic mode.
fat speeds over 60 mph (100 km/h)
Press button briefly.
The rear spoiler remains extended, the light-
emitting diode in the button goes out.
The rear spoiler changes to automatic mode.
Manual control

Operation, Safety
71
A, C - Switch for reading light on driver/passenger side
B- Switch for interior light and footwell lights
D- Orientation lightInterior LightsfPlease see the chapter “LOAD SWITCH-OFF
AFTER 2 HOURS OR 7 DAYS” on Page 258.For vehicles with automatic anti-dazzle
mirrors
fSwitch off the automatic anti-dazzle operation
of the mirrors before you switch on the interior
light.
Otherwise the mirrors may accidentally swivel
into the anti-dazzle position.
Interior lights, reading lightsSwitching off
fPress left half of switch.
Switching to continuous illumination
fPress right half of switch.
Switching on and off automatically
fMove switch to center position.
The interior and footwell lights are switched
on when a door is unlocked or opened or when
the ignition key is withdrawn from the ignition
lock.
The lights are switched off with a delay of
approx. 2 minutes after the doors are closed.
The light goes out immediately as soon as the
ignition is switched on or the vehicle is locked.
Orientation lightA light-emitting diode at the bottom of the interior
mirror improves orientation in the passenger com-
partment when it is dark.
Note on operation
On vehicles with the Sport Chrono Package Plus,
the brightness of the orientation light can be
changed in PCM.
fPlease observe the chapter “Individual
Memory” in the separate PCM operating
instructions.

Operation, Safety
73
Limits of ultrasonic measurement
The parking assistant system cannot detect:
– sound-absorbing obstacles (e.g. powder
snow),
– sound-reflecting obstacles (e.g. glass surfac-
es, flat painted surfaces)
– and very thin obstacles.
– Other ultrasound sources (e.g. pneumatic
brakes of other vehicles, jackhammers) can
interfere with detection of obstacles.
Fault indication
The parking assistant system indicates a fault in
two ways:
– After reverse gear has been selected, the
short signal tone is followed by a continuous
tone of the same pitch:
This indicates that sensors are soiled or cov-
ered with ice.
– After reverse gear has been selected, the
short signal tone is followed by a continuous
tone with a much lower pitch:
This indicates a general system fault.
Please have the fault remedied at an author-
ized Porsche dealer.A
- Control switch for door mirror adjustment Swivelling down mirror glass as a parking
aidfPlease see the chapter “SEAT MEMORY” on
Page 33.
– When reverse gear is engaged, the mirror
glass on the passenger’s side swivels down
slightly to show the curb area. Preconditions
– Vehicle must be equipped with seat memory.
– Set the control switch A to “passenger’s side”.
– Reverse gear must be engaged.
Returning mirror glass to its original position
fDrive forwards with a speed of over 4 mph
(6 km/h) or
fSet the control switch A to “driver’s side”.

Operation, Safety
77
Starting Procedures fPlease see the chapter “IMMOBILIZER” on
Page 15.
fPlease see the chapter “EMISSION CONTROL
SYSTEM” on Page 218.
Warning!
Serious injury or death may result if you are
involved in a collision without having fas-
tened the safety belts.
fFasten safety belts before driving away. Before starting the engine fApply the footbrake.
fManual transmission:
Move the gearshift lever into neutral.
The clutch pedal must be depressed fully
before the starter will engage.
fIn vehicles with PDK transmission:
Move PDK selector lever to position P or N.
Temperature sensors on the engine automatically
provide the correct fuel/air mixture required for
starting.
Therefore, it is not necessary to depress the
accelerator pedal while starting a cold or a
warm engine.
Starting the enginefTurn ignition key to ignition lock position 2.
fAs soon as the engine starts, release the igni-
tion key.
The first operation of the starter is ended automat-
ically when the engine starts.
If the engine does not start, subsequent starter
operations will not be ended automatically.
If the engine fails to start after 10 or 15 seconds
of cranking:
fWait about 10 seconds before engaging the
starter again.
fWhen starting the engine, be ready to drive
immediately.
Drive vehicle at moderate speeds and avoid
engine speeds above 4,200 rpm during the
first 5 minutes.
fDo not let the engine idle to warm up.
Danger!
Engine exhaust fumes have many compo-
nents which you can smell. They also contain
carbon monoxide (CO), which is a colorless
and odorless gas.
Carbon monoxide can cause unconscious-
ness and even death if inhaled.
fNever start or let the engine run in an en-
closed, unventilated area.
It is not recommended to sit in your car for pro-longed periods with the engine on and the car
not moving.
An unattended vehicle with a running engine
is potentially hazardous.
If warning lights should come on to indicate
improper operation, they would go unno-
ticed.
fNever leave the engine idling unattended.
Danger of fire.
fDo not park or operate the vehicle in areas
where the hot exhaust system may come in
contact with dry grass, brush, fuel spill or oth-
er flammable material.
fIf your car catches on fire for any reason, call
the fire department.
Do not endanger your life by attempting to put
out the fire.
Risk of burn injury when standing near or
coming into contact with the exhaust pipe.
The exhaust pipe is hot when the vehicle is running
and remains hot for some time after the vehicle is
turned off.
fTo prevent injury, make a point of noting where
your vehicle’s exhaust pipe is, avoid placing
your legs near the exhaust pipe, and closely
supervise children around the vehicle when the
exhaust pipe could be hot.
A hot exhaust pipe can cause serious burns.

Operation, Safety
79
Operational readiness of the emergency flasher
does not depend on the ignition lock and turn sig-
nal lever position.
fIf your car is disabled or parked under emer-
gency conditions switch on the emergency
flasher in the dashboard.
All turn signals and the indicator light in the
switch flash with the same frequency.
Warning!
Risk of an accident, resulting in serious per-
sonal injury or death.
fWhenever stalled or stopped for emergency re-
pairs, move the car well off the road. Switch on
the emergency flasher and mark the car with
road flares or other warning devices.
fDo not remain in the car. Someone approach-
ing from the rear may not realize your vehicle
is stopped and cause a collision.
Danger of fire.
fDo not park or operate the vehicle in areas
where the hot exhaust system may come in
contact with dry grass, brush, fuel spill or
other flammable material.
Hot engine compartment components can
burn skin on contact.
fBefore working on any part in the engine
compartment, turn the engine off and let it cool down sufficiently.
Emergency Flasher Switch

80
Operation, SafetyWarning chime
If the ignition key is withdrawn and the door is
opened while the lights (not the parking light or
Welcome Home lighting) are on, a chime warns of
possible battery discharge.
In some countries, differences are possible
due to provisions of law.
Daytime driving lightsThe daytime driving lights are integrated in the
front auxiliary headlights. These lights are
switched on only when the engine is running and
with the light switch in the positions OFF or HOME.
Low beam headlights must be switched on when
driving through tunnels or at dusk, for example.
Operation of the daytime driving lights may vary
depending on country-specific regulations.
Canada only:
In addition to the auxiliary headlights the parking
lights are switched on.
USA only:
The daytime driving lights can be deactivated in
the on-board computer.
fPlease see the chapter “ON-BOARD
COMPUTER (BC)” on Page 126.
Vehicles with the Sport Chrono Package Plus
Further individual light functions (e.g. daytime driv-
ing lights) are available in vehicles with the Sport
Chrono Package Plus.
fPlease observe the chapter “Individual Memo-
ry” in the separate PCM operating instructions.Cornering lightThe dynamic cornering light is activated above
speeds of 6 mph (10 km/h).
Light SwitchLights switched off
Daytime driving lights are switched on
when the engine is running.
Welcome Home Function
Daytime driving lights are switched on
when the engine is running.
Parking lights, side marker lights,
license plate light, instrument illumina-
tion, daytime driving lights switched off
Low beam, high beam
Only with ignition on,
daytime driving lights switched off
Rear fog light
Pull switch to second click.
Indicator light on.

Operation, Safety
81
Welcome Home LightingSwitching onfMove light switch to the HOME position.
For improved visibility and security when you get
in and out of the car, the daytime driving lights and
the tail lights remain on for a certain period of
time:
–When you get out of the car, the lights are
turned on for approx. 30 seconds after the
door is opened. The off-delay time resumes
when the vehicle is locked.
On vehicles with the Sport Chrono Package
Plus, the PCM can be used to set the off-delay
time. This setting also changes the lighting
period for unlocking the vehicle.
Please observe the chapter “Individual
Memory” in the separate PCM operating
instructions.
– The lights are turned on for approx.
30 seconds when the vehicle is unlocked.
The lights go out if the ignition is switched on
or when leaving the Welcome Home lighting.
Automatic Headlight Beam
Adjustment Vehicles with Bi-Xenon headlights feature
dynamic headlight beam adjustment.
When the ignition is switched on, the level of the
headlight beam automatically changes in accord-
ance with the vehicle load.
The level of the headlight beam is automatically
kept constant during acceleration and braking. Checking operation 1. Switch the low beam on.
2. Insert ignition key and switch ignition on.
The light beam first dips all the way down and
is then adapted to the vehicle load.
If this test item is not met, the headlight beam
adjustment system must be checked by an author-
ized Porsche dealer.