Operation, Safety
57
ABS Brake System
(Antilock Brake System)The ABS system represents a major contribution
to the enhancement of active safety in your
vehicle. 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
emergency braking.
The crucial advantage of the ABS system over a
conventional brake system is in the area of
maintaining directional control and maneuverabi-
lity of the car in emergency situations.
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
dangerous situations and not merely to try to stop in the shortest distance possible.
Operation of the ABS systemA wheel speed sensor is mounted to each of the
four wheels. If wheel lock-up of either of the front
wheels or the rear wheels is sensed during
braking, the brake pressure is adjusted automati-
cally until the wheel no longer slips.
If braking forces approach the wheel lock-up point
for all wheels (panic braking) the ABS system will
intervene to provide a rapid rythmic braking. The
proper operation of ABS is perceived by the driver
as a pulsating brake pedal in conjunction with
audible noise and perhaps some vibration.
fIf you experience these sensations while
driving or a road surface with questionable
traction, reduce vehicle speed appropriate for
the prevailing road conditions.
fIf full braking should be necessary, press the
brake pedal all the way down throughout the
entire braking procedure, regardless of the
pulsating pedal. Do not ease up on pressure
applied to the pedal.
The functional readiness of all the main electrical
components of the ABS is checked by an
electronic monitoring system both before and
while you drive.
10_GT3_21.book Seite 57 Donnerstag, 4. Juni 2009 12:48 12
58
Operation, Safety When the ignition is switched on the ABS warning
light will light up while the system is electronically
interrogated and goes out when the engine is
started if the check is not yet complete.
If the ABS warning lamp fails to go out, this
indicates that ABS has been deactivated due to a
fault. If the warning lights in the instrument panel
and on-board computer light up while you are
driving, this indicates that a fault has occurred. In
both cases, normal braking, as in vehicles without
ABS, is still retained.
The ABS system should, however, be examined at
an authorized Porsche dealer immediately to
prevent the occurrence of further faults.
fIf the ABS system becomes inoperative, take
your vehicle to your authorized Porsche dealer
immediately.
Warning!
Risk of an accident, resulting in serious
personal injury or death.
The control unit of the ABS brake system is
set for standard tire size. If non-standard
tires are installed, the control unit may misin-
terpret the speed of the vehicle, because of
the variant data it receives from the sensors
on the axles.
fUse only tire makes and types tested by Porsche.
Warning light USA
Warning light Canada
10_GT3_21.book Seite 58 Donnerstag, 4. Juni 2009 12:48 12
Operation, Safety
59
Porsche Stability Management
(PSM)PSM is an active control system for stabilization of
the vehicle during extreme driving maneuvers.
Warning!
Risk of an accident, resulting in serious
personal injury or death.
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.
Sensors at the wheels, brakes, steering system
and engine continuously measure:
–Speed
– Direction of travel (steering angle)
– Lateral acceleration
– Rate of turn about the vertical axis
– Longitudinal accelerationPSM uses these values to determine the direction
of travel indicated by the driver.
PSM intervenes and helps to correct the course if
the actual direction of motion deviates from the
chosen 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/her to adapt his/her
driving style to the road conditions:
– The multifunctional information light on the
instrument panel flashes.
– Hydraulic noises can be heard.
– The vehicle decelerates and steering-wheel
forces are altered as 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 the
brake pedal has begun vibrating.
Advantages of PSM– Improved traction and lane-holding ability in all
driving situations – even on road surfaces with
varying friction.
– 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 helps stabilize the vehicle as
required during dynamic driving maneuvers
(e.g. rapid steering movements, during lane
changes or on alternating bends).
– Improved braking stability in curves and on
different or varying road surfaces.
10_GT3_21.book Seite 59 Donnerstag, 4. Juni 2009 12:48 12
70
Operation, Safety
Starting Procedures fPlease see the chapter “IMMOBILIZER” on
Page 18.
fPlease see the chapter “EMISSION CONTROL
SYSTEM” on Page 168.
Warning!
Serious injury or death may result if you are
involved in a collision without having
fastened the safety belts.
fFasten safety belts before driving away. Before starting the engine fApply the footbrake.
fMove the gearshift lever into neutral.
The clutch pedal must be depressed fully
before the starter will engage.
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
ignition key.
The first operation of the starter is ended
automatically 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 compon-
ents 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
enclosed, unventilated area.
It is not recommended to sit in your car for
prolonged 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
unnoticed.
fNever leave the engine idling unattended.
Risk of fire due to hot exhaust system.
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.
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.
10_GT3_21.book Seite 70 Donnerstag, 4. Juni 2009 12:48 12
104
Instruments, On-Board Computer
Instrument Panel USA Models Also refer to the corresponding chapters in
the Owner’s Manual.
1.Engine oil temperature gauge
2.Speedometer with analogue display
3.Tire pressure warning light
4.Turn signal indicator light, left
5.Tachometer
6.High beam indicator light
7.Turn signal indicator light, right
8.Upshift indicator
9.Cooling system
Temperature gauge, warning light
10.Fuel
Level gauge, warning light
11.Engine oil pressure gauge
12.Adjustment button for instrument illumination
and trip counter
13.Odometer and daily trip mileage display
14.Automatic speed control indicator light15.Light sensor for instrument illumination
16.Airbag warning light
17.Check Engine warning light
(Emission control warning light)
18.Central warning light
19.On-board computer display
20.Porsche Stability Management
PSM Multifunctional light
21.Brake warning light
22.Safety belt warning light
23.ABS warning light
24.Clock and outside temperature display
25.Adjustment button for clockWhen the ignition is switched on, the warning
lights light up for a lamp check.
Note
Warnings that have been given are stored in the
appropriate control unit memory and can be read
out at an authorized Porsche dealer.
This information can help to warn you about situa-
tions which may be hazardous to you or your car. 10_GT3_21.book Seite 104 Donnerstag, 4. Juni 2009 12:48 12
106
Instruments, On-Board Computer
Instrument Panel Canada Models Also refer to the corresponding chapters in
the Owner’s Manual.
1.Engine oil temperature gauge
2.Speedometer with analogue display
3.Tire pressure warning light
4.Turn signal indicator light, left
5.Tachometer
6.High beam indicator light
7.Turn signal indicator light, right
8.Upshift indicator
9.Cooling system
Temperature gauge, warning light
10.Fuel
Level gauge, warning light
11.Engine oil pressure gauge
12.Adjustment button for instrument illumination
and trip counter
13.Odometer and daily trip mileage display
14.Automatic speed control indicator light15.Light sensor for instrument illumination
16.Airbag warning light
17.Check Engine warning light
(Emission control warning light)
18.Central warning light
19.On-board computer display
20.Porsche Stability Management
PSM Multifunctional light
21.Brake warning light
22.Safety belt warning light
23.ABS warning light
24.Clock and outside temperature display
25.Adjustment button for clockWhen the ignition is switched on, the warning
lights light up for a lamp check.
Note
Warnings that have been given are stored in the
appropriate control unit memory and can be read
out at an authorized Porsche dealer.
This information can help to warn you about situa-
tions which may be hazardous to you or your car. 10_GT3_21.book Seite 106 Donnerstag, 4. Juni 2009 12:48 12
Maintenance, Car Care
175
Decals
Caution!
Risk of damage due to separation of the
decal films when using high-pressure
cleaning equipment or steam cleaners.
fDo not use high-pressure cleaning equipment or steam cleaners to clean decal films.
Washing The best method of protecting your car from the
damaging effects of the environment is frequent
washing and the application of a preservative. The
underside of your vehicle should also be
thoroughly washed for cinders, salt or sanding at
winter’s end.
The longer salt, road dust and industrial dust,
dead insects, bird droppings or substances from
trees (resin, pollen) are allowed to remain on the
bodywork, the more serious is their harmful
effect.
New cars should be washed carefully with plenty
of clear water to protect the new paint work. Dark
paint finishes show up the smallest of surface
damage (e.g., scratches) more readily than lighter
colors. Dark colors are also more susceptible to
scratching because of the composition of their
pigments and require particularly careful paint
care.
fDo not wash your car in bright sunlight or while
the bodywork is still hot.
fWhen washing by hand, use abundant water, a
soft sponge or wash brush, and Porsche car
shampoo.
fBegin by spraying the body thoroughly with
water to rinse away loose dirt.
fAfter washing, rinse the car with plenty of
water and then dry with a chamois leather.
Do not use the same chamois leather for
drying as you use for cleaning the windshield
and windows.
Warning!
Moisture which gets on to the brakes during
a car wash can reduce braking efficiency or
make the brakes pull unevenly which could
increase the danger of an accident, causing
serious personal injuries or death.
fAfter washing the car, test the brakes and
steering and briefly brake the discs dry.
When doing this, take care not to hamper other
road users behind you (traffic conditions permitting). Automatic car washes
fPlease see the chapter “WIPER BLADES” on
Page 173.
Optional add-on parts or parts which project
beyond the contours of the vehicle may be
damaged by design features (e.g. brushes) of
automatic car washes.
The following parts are particularly
susceptible to damage:
– Windshield wipers (always switch them off to
prevent them wiping unintentionally in intermit-
tent or sensor operation)
– External antennas (always unscrew)
– Rear spoiler
– Wheels (the wider the rim and the lower the tire
height, the greater the risk of damage)
– High-gloss wheels (to prevent these from
getting scratched, do not clean with the wheel-
cleaning brushes of the car wash).
fPlease consult the operator before using
automatic car washes.
fWash and dry by hand all points not reached by
a car wash, such as door and lid seams or
door sills.
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Index
247
OOctane rating ..................................... 166, 167
Odometer .................................................. 109
Off delay ...................................................... 74
Oil ............................................................. 159
Checking level .................................... 143
Choosing the right oil .......................... 160
Consumption ........................................ 13
Level checks ...................................... 160
Level indicator .................................... 143
Pressure ............................................ 115
Temperature....................................... 108
Topping off engine oil .......................... 160
OIL Display and measurement of the
engine oil level ............................................ 143
On-board computer ..................................... 117
Basic settings ............................. 118, 145
Calling on-board computer functions ..... 118
Functions and display possibilities ........ 118
General information ..................... 146, 147
Language versions .............................. 145
Operation, controls ............................. 117
Selecting a radio station ...................... 133
Setting the clock ................................. 146
Switching daytime running lights on/off. 146
Switching on navigation ....................... 133
Tire pressure warnings ........................ 139
Warnings and messages...................... 148
On-board literature .......................................... 2
Operating voice control ............................... 117
Operating your Porsche in other Countries .... 164
Orientation light ............................................ 66
Outside temperatur indicator ....................... 114
Oxygen sensor ........................................... 169
PPaint
Care...........................................174, 176
Data ...................................................235
Parking brake ...............................................53
Warning light.........................................54
Parking light ...........................................73, 75
Particle filter ...............................................172
Passenger compartment monitoring ...............26
Pen holder ....................................................84
Plastic parts ...............................................179
Care...................................................179
Platform lift.................................................206
Porsche Active Suspension Management
(PASM) .........................................................63
Sport mode ..........................................63
Switching off Sport mode ......................63
Porsche Ceramic Composite Brake (PCCB) .......6
Porsche Communication Management (PCM)...89
Porsche Stability Management (PSM) ..............59
Information light ....................................61
Power steering fluid level .....................171, 239
Power windows .............................................21
Practical tips ..............................................183
Putting vehicle into operation .......................213RRadiator fan..........................................71, 159
Radio reception ............................................89
Rain sensor ............................................76, 77
Range on remaining fuel ......................118, 147
Reading light ................................................66
Rear lid ..................................................85, 86
Rear view mirrors..........................................31Rear window defogger.......................... 32, 102
Rear window heating.................................. 102
Recirculating-air button ................................. 99
Refueling ................................................... 166
Relays ....................................................... 207
Remote control ............................................ 19
Readiness ............................................ 20
Replacing battery ............................... 216
Standby funktion .................................. 20
Synchronization.................................... 20
Replacement key.......................................... 18
Replacing bulbs.......................................... 219
Replacing wiper blades............................... 173
Rims
Diameter ........................................... 194
Rim width........................................... 194
TPM sensors...................................... 190
Running in.................................................... 13
SSafety belts ................................................. 38
Cleaning ............................................ 180
Height adjustment................................ 40
Tensioner ............................................ 38
Warning light ........................................ 39
Safety compliance sticker ........................... 234
SC OFF button ............................................. 60
SC+TC OFF button ....................................... 61
Sealing set ................................................ 204
Seals ........................................................ 179
Care .................................................. 179
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