2010 PORSCHE 911 GT3 fuel pressure

152
Warnings
PA S M N o r m a l / S p o r t I n d i c a t or for selected PASM mode
PASM failure Have the fault remedied at an authorized Porsche dealer.
PASM indicator faulty Have the fault remedied at an authorized Porsche dealer.
PADM failure Dynamic engine mounting failed.
Have the fault remedied at an authorized Porsche dealer.
System fault airbag Airbag is faulty.
Have the fault remedied at an authorized Porsche dealer.
Check passenger’s seat setting Weight sensing is impaired on the passenger's seat (Advanced Airbag).
Correct the seating position, set the backrest upright, do not support weight on the armrests, or lift on
the handles.
Depress clutch pedal Depress clutch pedal when starting.
System fault
visit workshopSeveral systems may have failed. Adjust your driving style. Reduce speed.
Have the fault remedied at an authorized Porsche dealer.
Failure
fuel level indicator
workshopHave the fault remedied at an authorized Porsche dealer.
Service in mls/days (km/days) Service indicator
Bring the vehicle in for service no later than after the distance/time shown has elapsed.
Please see the additional information in the “Maintenance” booklet.
Service now Service indicator
Have your vehicle serviced at an authorized Porsche dealer.
Flat tyre! Tire Pressure Monitoring has detected a serious pressure loss.
Stop at a suitable place and check tires for damage. Fill in tire sealant if necessary.
Instrument
panelOn-board
computerText display on on-board
computerMeaning/measure
10_GT3_21.book Seite 152 Donnerstag, 4. Juni 2009 12:48 12

Maintenance, Car Care
159
Engine-compartment blower, radiator fan The radiator and radiator fan are in the front of the
car.
The engine-compartment blower is mounted on
the engine compartment lid.
Warning!
Risk of injury.
After the engine is switched off, the engine-
compartment temperature is monitored for
approx. 30 minutes.
During this period, and depending on tempe-
rature, the engine-compartment blower may
continue to run or start to run.
fCarry out work in these areas only with the
engine off, the ignition off, and exercise
extreme caution.
Risk of injury. The radiator fan in the front
end of the car may be operating or unexpec-
tedly start operating when the engine is
switched on.
fCarry out work in these areas only with the engine switched off.
Engine Oil It is important to perform oil changes regularly in
accordance with the intervals specified in the
“Maintenance” booklet.Engine oil consumption It is normal for your engine to consume oil.
The rate of oil consumption depends on the quality
and viscosity of oil, the speed at which the engine
is operated, the climate, road conditions as well
as the amount of dilution and oxidation of the
lubricant.
If the vehicle is used for repeated short trips, and
consumes a normal amount of oil, the engine oil
measurement may not show any drop in the oil
level at all, even after 600 miles (1,000 km) or
more. This is because the oil is gradually
becoming diluted with fuel or moisture, making it
appear that the oil level has not changed.
The diluting ingredients evaporate out when the
vehicle is driven at high speeds, as on an
expressway, making it then appear that oil is
excessively consumed after driving at high
speeds.
If the conditions you drive your vehicle in are
dusty, humid, or hot, the frequency of the oil
change intervals should be greater. If the vehicle is driven at a high rate of speed,
climatic conditions are warm, and the load is high,
the oil should be checked more frequently, as
driving conditions will determine the rate of oil
consumption.
– The engine in your vehicle depends on oil to
lubricate and cool all of its moving parts.
Therefore, the engine oil should be checked
regularly and kept at the required level.
– Make it a habit to have the engine oil level
checked at every refueling.
– The oil pressure warning light is not an oil level
indicator.
The oil pressure warning light indicates serious
engine damage may be occuring when lit, if
engine rpm is above idle speed.
10_GT3_21.book Seite 159 Donnerstag, 4. Juni 2009 12:48 12

164
Maintenance, Car Care
Fuel Economy Fuel economy will vary depending on where,
when and how you drive, optional equipment
installed, and the general condition of your
car.
A car tuned to specifications and correctly
maintained, will help you to achieve optimal
fuel economy.
fHave your vehicle tuned to specifications.
Air cleaner should be dirt free to allow proper
engine “breathing”.
Battery should be fully charged.
Wheels should be properly aligned.
Tires should be inflated at correct pressure.
fAlways monitor your fuel consumption.
fDrive smoothly, avoid abrupt changes in speed
as much as possible.
fAvoid jack rabbit starts and sudden stops.
fDo not drive longer than necessary in the lower
gears. Shifting into a higher gear early without
lugging the engine will help save fuel.
fProlonged “warm up” idling wastes gas. Start
the vehicle just before you are ready to drive.
Accelerate slowly and smoothly.
fSwitch off the engine if stationary for longer
periods. fAny additional weight carried in the vehicle
reduces fuel economy. Always keep cargo to a
minimum and remove all unnecessary items.
fOrganize your trips to take in several errands
in one trip.
fAll electrical accessories contribute to incre-
ased fuel consumption.
fOnly switch on the air conditioning when neces-
sary.
The EPA estimated miles per gallon (mpg) is
to be used for comparison purposes, actual
mileage may be different from the estimated
mpg, depending on your driving speed,
weather conditions and trip length. Your
actual highway mileage will probably be less
than the estimated mpg.
fPlease observe all local and national speed
limits.
Operating your Porsche in other
Countries Government regulations in the United States and
Canada require that automobiles meet specific
emission regulations and safety standards. There-
fore, cars built for the U.S. and Canada differ from
vehicles sold in other countries.
If you plan to take your Porsche outside the conti-
nental limits of the United States or Canada, there
is the possibility that
– unleaded fuel may not be available;
– unleaded fuel may have a considerably lower
octane rating. Excessive engine knock and
serious damage to both engine and catalytic
converters could result;
– service may be inadequate due to lack of
proper service facilities, tools or diagnostic
equipment;
– replacement parts may not be available or very
difficult to get.
Porsche cannot be responsible for the
mechanical damage that could result
because of inadequate fuel, service or parts
availability.
If you purchased your Porsche abroad and want to
bring it back home, be sure to find out about
shipping and forwarding requirements, as well as
current import and customs regulations.
10_GT3_21.book Seite 164 Donnerstag, 4. Juni 2009 12:48 12

174
Maintenance, Car Care
Car Care Instructions fPlease see the chapter “EXERCISE EXTREME
CAUTION WHEN WORKING ON YOUR VEHICLE”
on Page 157.
Regular and correct care helps to maintain
the value of your car and is also a precondi-
tion for the New Vehicle Warranty and the
Anti Corrosion Warranty.
Your authorized Porsche dealer has specially
developed car-care products from the
Porsche program available either singly or
as complete car-care sets. They will be
pleased to help you select suitable products.
Whether you use Porsche products or other
commercially available cleaning agents first
make sure of their correct application.
A Porsche that is well-cared for can look like new
for years. It all depends on the amount of care the
owner is willing to give the car.
Warning!
Risk of serious personal injury or damage to
the vehicle or property.
Cleaning agents may be hazardous to your
health.
Most chemical cleaners are concentrates
which require dilution. High concentrations
might cause problems ranging from irritation
to serious injury as well as damage to your
vehicle.
fKeep cleaning agents out of reach from
children.
fObserve all caution labels.
fAlways read directions on the container before
using any product. These directions may
contain information necessary to avoid
personal injury.
fDo not use fuel, kerosene, naphtha, nail polish
remover or other volatile cleaning fluids. They
may be toxic, flammable or hazardous in other
ways. Only use spot removing fluids in a well
vented area.
fDo not clean the underside of chassis,
fenders, wheel covers, etc., without protecting
your hands and arms as you may cut yourself on sharp-edged metal parts.
Moisture and road salt on brakes may affect
braking efficiency.
fTest the brakes after each vehicle washing.
High-pressure cleaning equipment, steam
cleaners
Warning!
High-pressure cleaning equipment or steam
cleaners can damage the following compon-
ents:
–tires,
– logos, emblems,
– painted surfaces,
– alternator.
fPlease observe the operating instructions from
the unit manufacturer.
fWhen cleaning with a flat-jet nozzle or the like,
maintain a minimum distance of 20 inches
(50 cm).
fNever use high-pressure cleaning equipment
or steam cleaners with a round-jet nozzle. A
high-pressure cleaning equipment or steam
cleaners with round nozzle will damage your
vehicle.
fThe tires are particularly susceptible to
damage.
fDo not point the cleaning jet directly at any of the aforementioned components.
10_GT3_21.book Seite 174 Donnerstag, 4. Juni 2009 12:48 12

Maintenance, Car Care
181
Storing your Porsche If you intend to store your Porsche for a prolonged
period, please consult your authorized Porsche
dealer. The staff will be glad to advise you on the
most suitable and necessary methods.
fClean your vehicle thoroughly inside and
outside.
Clean the engine compartment.
The under carriage and chassis components
should be free of dirt and salt deposits.
fFill up the fuel tank.
fChange the oil and oil filter, and run the engine
for several minutes.
fIncrease the tire pressure to 58 psi (4 bar).
It is not recommended to lift the vehicle, due to
the possibility of corrosion on shock absorber
piston shafts.
The vehicle should be moved slightly, approxi-
mately every four weeks, to prevent flat spot
on the tires. Climate control
The air conditioning system should be in good
working condition and fully charged.
Windshield/Headlight washer
fCheck and correct antifreeze/cleaning solution
level as necessary.
Electrical system
fRemove the battery from the vehicle and store
it in a cool dry place, not on a cement floor.
When the battery is disconnected, the
alarm system is deactivated.
fRecharge the battery every 3 months. If the
battery remains in the vehicle with the cables
connected, it is necessary to check, remove
and recharge the battery every 2-3 weeks.
Do not fast charge the battery.
fPlease see the chapter “BATTERY” on
Page 211.Vehicle interior
The interior must be dry, especially in the area of
the floor carpets. The use of drying agents (Silica-
Gel) is recommended in vehicles with leather
interior and in areas with high humidity. The
recommended amount is 3 fabric bags of 1.1 lbs.
(500 grams) each placed on the floor carpets.
Windows, doors and lids must be closed. The air
vents should be opened.
10_GT3_21.book Seite 181 Donnerstag, 4. Juni 2009 12:48 12

186
Practical Tips, Emergency Service fPlease see the chapter “TIRE PRESSURES FOR
COLD TIRES 68 °F/20 °C” on Page 237.
Each tire, should be checked every 2 weeks when
cold (68 °F/20 °C) and inflated to the inflation
pressure recommended in this Owner's Manual or
on the tire-pressure plate.
If your vehicle has tires of a different size than the
size indicated in this Owner's Manual or on the tire-
pressure plate, you should determine the proper
tire inflation pressure for those tires.
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring (TPM)
that illuminates a low tire pressure message when
one or more of your tires is significantly under-
inflated. Accordingly, when the low tire pressure
message illuminates, you should stop and check
your tires as soon as possible, and inflate them to
the proper pressure. Driving on a significantly
under-inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPM is not a substitute for
proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the level to
trigger illumination of the TPM low tire pressure
message.
fPlease see the chapter “TPM TIRE PRESSURE
MONITORING” on Page 134.
When tires are warm, the tire pressure is
increased.fNever let air out of hot tires.
This could cause the tire pressure to fall below
the prescribed value.
Insufficient tire filling pressure can cause tires to
overheat and thus be damaged – even invisibly.
Hidden tire damage is not eliminated by subse-
quently correcting the tire pressure.
Overloading
Danger!
Risk of damage to vehicle parts, loss of
control and serious personal injury or death.
fDo not overload your vehicle.
fIf loading the vehicle also correct the tire
pressure. Tire pressure for loaded vehicle can
be found on the tire pressure plate and in the
chapter technical data.
fNever exceed the specified axle load.
Overloading can shorten the service life of the
tires and car, as well as lead to dangerous
vehicle reactions and long braking distances.
Damage due to overloading is not covered by the vehicle warranty.
fPlease see the chapter “LOADING INFORMA-
TION” on Page 195.
fPlease see the chapter “TIRE PRESSURES FOR
COLD TIRES 68 °F/20 °C” on Page 237.
Example of a tire pressure plateTire pressure plateInformation on the tire pressure plate
A Seating capacity
Maximum number of vehicle occupants, inclu-
ding the driver.
10_GT3_21.book Seite 186 Donnerstag, 4. Juni 2009 12:48 12

188
Practical Tips, Emergency Service
Danger!
Driving on worn tires can result in loss of
control of the vehicle and could cause
serious personal injuries or death.
fDo not drive with worn tires or tires showing
cuts or bruises as they may lead to sudden
deflation and loss of control which could cause
severe personal injury.
fSpecialized high performance tires on high
performance sports cars exhibit more wear
than those on a family sedan, or even a high
performance sedan.
Therefore, it is important to check your tire
pressure and condition at least every two weeks.
If you notice that tires are wearing unevenly,
consult your Porsche dealer.
Uneven wear may not always be due to improper
wheel alignment. It can be the result of individual
driving habits such as cornering at high speeds. If
the tire pressure is not checked and adjusted
regularly, abnormal tire wear can also occur.
Tire care fAvoid damaging tires and wheel rims.
fI f y o u m u s t d r i v e o v e r a c u r b o r o t h e r o b s t a c l e ,
drive slowly and at an obtuse angle.
fCheck tires for uneven wear and damage
before driving off.
fRemove imbedded material.
fReplace worn or damaged tires immediately.
fKeep oil, fuel, brake fluid, etc. away from tires.
fReplace missing valve stem caps.
fKeep tires inflated correctly.
fWash tires when washing the vehicle. Also
clean inner side of wheels.
fDo not use abrasive cleaners when washing
the wheels.
fCheck wheel rims for corrosion.
fRemove road salt, if driving in winter.
Tire damage, puncture High-pressure cleaning units or steam cleaners
can damage the tires.
fPlease see the chapter “HIGH-PRESSURE
CLEANING EQUIPMENT, STEAM CLEANERS”
on Page 174.
fCheck tires for imbedded material, cuts,
punctures, cracks and bulges (side wall)
before driving off.
In case of tire damage, where it is uncertain
whether there is a break in the ply with all its
consequences or tire damage caused by thermal
or mechanical overloading due to loss of pressure
or any other prior damage, we recommend that
the tire be replaced for safety reasons.
If one faulty tire is replaced it should be noted that
the difference in tread depth on one axle must not
exceed 30%.
Handling inconsistencies may result.
fPerform a visual inspection if necessary.
10_GT3_21.book Seite 188 Donnerstag, 4. Juni 2009 12:48 12

228
Practical Tips, Emergency Service
Adjusting HeadlightsfPlease see the chapter “LIGHTS, REPLACING
BULBS” on Page 219.
Adjustment
The adjustment is made with the vehicle ready to
drive and the fuel tank completely filled.
The driver’s seat must be loaded by a person or a
165 lbs. (75 kg) weight and the tire pressures
must meet the prescribed values.
After being loaded, the car must be rolled a few
meters so that the suspension can settle.
For checking the headlight adjustment, the
vertical position of the cutoff of the low beam (see
fig.) has to be projected on a vertical screen (wall)
in distance of 24.6 ft. (7.5 m) from the front lens
of the headlamp.
The correct position of the cutoff is 2.0 in. (5 cm)
at 24.6 ft. or 7.5 m (0.4°) below a horizontal line,
x cm from ground to the center of the headlamp
lens.Lateral adjustment of the headlights should be
carried out at a specialist workshop with an optical
adjustment unit.
Distance
Visual aim shall be performed at not less than
24.6 ft. (7.5 m) (this value is a rounded down
conversion from the 25-foot distance typical of
field aim using a screen). The 24.6 ft. (7.5 m)
distance is measured from the headlamp lens to
the viewing screen.
10_GT3_21.book Seite 228 Donnerstag, 4. Juni 2009 12:48 12