2004 PORSCHE 911 GT3 check engine

CarTelephone and
Aftermarket Alarms

Important legalandsafety information
regarding theuse ofcellular telephones

Some states mayprohibit theuse ofcellular tele-
phones whiledriving avehicle. Checkthelaws and
regulations onthe use ofcellular telephones inthe
areas where youdrive.

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Danger!
Risk ofan accident.
Severe personal injuryordeath canresult in
the event ofan accident.
Looking awayfromtheroad orturning your
attention awayfromyourdriving cancause
an accident andserious orfatal injury.

When usingyourcellular telephone, youshould al-
ways:
" Give fullattention toyour driving -pull offtile
road andpark before making oranswering a
call iftraffic conditions sorequire;
and

" Keep bothhands onthe steering wheel-use
hands-free operation(ifavailable) -pull offthe
road andpark before usingahand-held tele-
phone.
It
is essential toobserve theinstructions of
the telephone manufacturer beforeputting
the telephone intooperation.

Any portable telephone orradio transmitter which
is used inaPorsche mustbeproperly installedin
accordance withthetechnical requirements of
Porsche.

The transmission powermustnotexceed

lOW.

The devices mustpossess atype approval for
your vehicle andhave an"e"
symbol.

If you should require equipment withtransmission
power values greater than10 W, please consult
your authorized Porschedealerforthis purpose.
He isfamiliar withthetechnical requirements for
installing devicesofthis kind.
The antennas forallradios andtelephones witha
transmitting antennamustbeexternally mounted.
The improper installation ofradios ortelephones
or use ofaradio ortelephone withatransmitting
antenna insidethecar may cause
thewarning
lights tocome on.

Improper installation ofsuch equipment cancre-
ate adischarged batteryorexcessive current
draw fromadded equipment. If
aftermarket systemsareinstalled bynon-dealer-
ship technicians oroutside theselling dealer,
problems mayresult. Installation ofaftermarket
equipment isnot covered undertheNew CarWar-
ranty.
" Consult yourauthorized Porschedealerabout
the installation ofnon Porsche approved equip-
ment.

Reception quality

The reception qualityofyour cartelephone will
change constantly whenyouaredriving. Interfer-
ence caused bybuildings, landscape andweather
is unavoidable. Itmay become particularly difficult
to hear when usingthehands-free functiondueto
external noisesuchasengine andwind noise.

Automatic car-wash

" Unscrew externalantennas beforeusinganau-
tomatic car-wash.
Controls, Instruments
107

Gearshifting

The positions ofthe gears areshown onthe gear-
shift lever.

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Warning!
Risk ofan accident.

~ Always checkthemovement ofthe clutch ped-
al before driving andmake surethatitis not
obstructed byafloor matorany other object.
~ Secure thefloor mattoprevent itfrom sliding
into positions thatcould interfere withthesafe
operation ofyour vehicle.
Your Porsche dealercanoffer youfloor mats
of the correct sizeincluding asecuring possi-
bility.

To avoid damage tothe clutch andtransmis-
sion:

~ Always depress theclutch pedalfullywhen
changing gears.
Make surethatthegearshift leveriscomplete-
ly engaged.
~ Only shiftintoreverse whenthecar has come
to acomplete stop.
~
Permitted enginespeed

~ Change intoahigher gearbefore theneedle
reaches thered mark onthe tachometer, or
ease offthe accelerator.
If the redzone isreached duringacceleration, fuel
feed isinterrupted.

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Caution!
To avoid severe engine damage.

~ Always observe theengine rpmbefore down-
shifting toalower gear,soyou donot exceed
the maximum enginerpm.

Reverse

~ Depress theclutch pedalforseveral seconds
before shifting intoreverse.
Only then move thegearshift levertothe left,
overcoming thespring tension, andthen tothe
front.
Both back-up lightscome onwhen thetransmis-
sion isput into reverse (withignition on).
Controls,Instruments
109

Coolant Level

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Please observe thechapter "EXERCISE EX-
TREME CAUTION WHENWORKING ONYOUR
VEHICLE" onPage 112.
The cooling systemisfilled atthe factory witha
permanent coolant.
It provides year-round protectionfromcorrosion
and freezing downto-31°F
I-35°C
(Nordiccoun-
tries -40°F/-40°Cl.

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Only useantifreeze authorized byPorsche.
Checking
coolantlevel

The expansion tankwithitsfiller orifice isinthe en-
gine compartment.

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Check thecoolant levelregularly throughthe
transparent expansiontank.
When theengine iscold andthecar islevel the
fluid level must liebetween the"MIN" and"MAX"
markings.

Topping offcoolant

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Warning!
Danger ofserious personal injuryfromscald-
ing. Coolant ishazardous toyour health, and
may befatal ifswallowed.

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Donot open thecap ofthe expansion tank
while theengine ishot.

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Allow theengine tocool down before opening
the cap andprotect yourhands, armsandface
from anypossible escapeofhot coolant.

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Keep coolant outofchildren's reach.

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Also, keepcoolant awayfromyourpets.
They canbeattracted toitshould therebea
spill, ortoused coolant leftinan open contain-
er. Coolant canbedeadly topets ifconsumed. 1.
Switch engineoffand letitcool.
Please observe thechapter "COOLING SYS-
TEM" onPage 62.
2. Cover theexpansion tankcapwith athick rag.
Open capslowly andcarefully andallow over-
pressure toescape.
Then unscrew capcompletely.
3. Only addamixture ofantifreeze andwater in
equal parts, anddonot exceed the"MAX"
mark.

Antifreeze incoolant:

50% gives protection downto
-31°F/-35°C

60% gives protection downto-58°F
I-50°C

4. Screw capfirmly on.
If in an emergency purewater hasbeen added,
the mix ratio must becorrected atan authorized
Porsche dealer.
Marked lossofcoolant indicates leakageinthe
cooling system.
The cause should immediately beremedied atan
authorized Porschedealer.
Maintenance, CarCare
113

Engine-compartment blower,
radiator fan

The radiator andradiator fansareinthe front of
the car.
The engine-compartment blowerismounted on
the engine compartment lid.

A
Warning!
Risk ofinjury.
After theengine isswitched off,theengine-
compartment andcoolant temperatures are
monitored forapprox. 20minutes.
During thisperiod, anddepending ontem-
perature, theengine-compartment blower
and radiator fansmaycontinue torun or
start torun.

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Carry outwork inthese areasonlywiththeen-
gine off,the ignition switched off,and exercise
extreme caution.

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Maintenance, CarCare
Engine
Oil

Engine oilconsumption

It is normal foryour engine toconsume oil.
The rate ofoil consumption dependsonthe quality
and viscosity ofoil, the speed atwhich theengine
is operated, theclimate, roadconditions aswell
as the amount ofdilution andoxidation ofthe
lubricant.
If the vehicle isused forrepeated shorttrips, and
consumes anormal amount ofoil, the engine oil
measurement maynotshow anydrop inthe oil
level atall, even after600miles (1000 km)or
more. Thisisbecause theoilisgradually becom-
ing diluted withfuelormoisture, makingitappear
that theoillevel hasnotchanged.
The diluting ingredients evaporateoutwhen the
vehicle isdriven athigh speeds, ason anexpress-
way, making itthen appear thatoilisexcessively
consumed afterdriving athigh speeds.
If the conditions youdrive yourvehicle inare
dusty, humid, orhot, thefrequency ofthe oil
change intervals shouldbegreater. If
the vehicle isdriven atahigh rateofspeed,
climatic conditions arewarm, andtheload ishigh,
the oilshould bechecked morefrequently, as
driving conditions willdetermine therate ofoil
consumption.
- The engine inyour vehicle depends onoilto
lubricate andcool allofits moving parts.
Therefore, theengine oilshould bechecked
regularly andkept atthe required level.
- Make ita habit tohave theengine oillevel
checked withevery fuelfilling.
- The oilpressure warninglightisnot anoillevel
indicator.
The oilpressure warninglightindicates serious
engine damage maybeoccuring whenlit,ifen-
gine rpmisabove idlespeed.

Engine Oillevel

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Please observe thechapter "EXERCISE EX-
TREME CAUTION WHENWORKING ONYOUR
VEHICLE" onPage 112.

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Regularly checktheoillevel using theon-board
computer eachtimethevehicle isrefuelled.
Please observe thechapter "ON-BOARD COM-
PUTER (BC)"onPage 67.
A

Warning!
Risk ofburning fromhotparts inengine com-
partment. Riskofinjury byrotating parts.
The engine compartment bloweronthe en-
gine compartment lidcan start upeven with
engine off.

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Exercise extremcaution whenworking onthe
engine compartment.

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Top ofengine oilonly withtheengine off.

Engine oilishazardous toyour health and
may befatal
if
swallowed.

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Keep engine oilout ofchildren's reach.

Used engine oilcontains chemicals thathave
caused cancerinlaboratory animals.

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Always protect yourskinbywashing thorough-
ly with soap andwater.
The oildipstick andoilfiller areinthe engine com-
partment.

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Maintenance,CarCare
1

Preconditions forcorrect
oillevel

measurement withtheoildipstick

Vehicle mustbelevel.
- Engine mustberunning andatoperating
temperature (engine coolant temperature ofatleast
176T /

80°C).
- The engine mustidleforatleast 20seconds
(under 1,000rpm).
- The airconditioning mustbeoff.

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Maintenance, CarCare
Checking
the
oillevel
andtopping off
engine oil

1. Apply handbrake andputthe gearshift leverin
neutral.
2. Unscrew capAof the oilfiller opening.
Withdraw dipstickBand wipe itwith aclean,
lint-free cloth.
3. Push dipstick fullyhome, withdraw againand
read offthe oillevel.
Push dipstick inas far asthe stop.
The

oillevel
must inno case fallbelow the
minimum orexceed themaximum
oillevel

on the dipstick.

The difference betvv'eenthetwo marks isapproxi-
mately 1.0liter/l.l quarts.
4. Add engine oilquarter-liter atatime, ifneces-
sary.
5. Check oillevel withthedipstick again.
6. Carefully closecapofthe oilfiller opening.

Oilchange

The engine oilhas tobe changed atthe intervals
listed inyour
Maintenance Schedule.

'" Please observe thechapter "CAPACITIES" on
Page 185.
We recommend thatyouhave theengine oil
changed atyour Porsche dealer,whohasthere-
quired oilsand thenecessary fillingequipment.
If you suspect anoilleak inthe engine haveyour
dealer checkitout immediately.
All current engineoilsarecompatible witheach
other, i.e. when making anoilchange itis not nec-
essary toflush theengine ifyou wish touse adif-
ferent brandorgrade ofoil.
Since, however, eachbrand ofoil has aspecial
composition, youshould, ifpossible, usethe
same oilbrand ifit becomes necessary totop up
between oilchanges.
Porsche engineshavelongintervals betweenoil
changes. Youcanmake bestuseofthese longoil
change intervals byusing multigrade oilssince
these arelargely independent ofseasonal fluctua-
tions intemperature.

1
Maintenance, CarCare If
your vehicle isused frequently instop-and-go
traffic incold weather, theengine willnot always
be properly warmedup.
Condensation fromproducts ofcombustion may
accumulate inthe oil.Inthis case, itis advisable
to change theoilmore frequently sothat your en-
gine once again has100% efficient engineoil.

Engine oilperformance class

Engine oilisnot only alubricant, butalso serves
to keep theengine clean,toneutralize thedirt
which penetrates intotheengine through combus-
tion andtoprotect theengine against corrosion.
To perform thesefunctions, theoilisprovided
with additives whichhavebeen specially devel-
oped forthese functions.
The efficiency ofan oilisexpressed, forexample,
by the API, ILSAC orACEA classifications.
Viscosity

Like allliquids, engineoilisviscous whencold,
and thin-bodied whenwarm. Theviscosity ofan oil
is expressed byitsSAE class. Forcold viscosity
(measured attemperatures below32°F
jO°C)
the
SAE class isgiven asanumber andtheletter "W"
(as inwinter), forhot viscosity (measured at
212°FjlOO°C) theSAE class isgiven onlyasa
number.
The viscosity ofan oilis,therefore, alwaysthe
same ifithas thesame number ofan SAE class.
Oils with twoviscosities arecalled multigrade oils;
oils with onlyoneviscosity aretermed single-
grade oils.
Single-grade oilscan notbeused inyour engine.
The viscosity ofthe engine oilfor your Porsche
has tobe chosen according tothe ambient tem-
perature giveninthe engine oilrecommendation
table.

Fuel

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Warning!
Fuel ishighly flammable andharmful to
health.

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Fire, open flame andsmoking areprohibited
when handling fuel.

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Avoid contact withskinorclothing.

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Donot inhale fuelvapors.

To prevent damage tothe emission control
system andengine:

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Never drivethetank completely outoffuel.

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Avoid highcornering speedsafterthewarning
lights havecome on.

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Please observe thechapter "EMISSION CON-
TROL SYSTEM" onPage 124.
Please observe thechapter "FUELECONOMY"
on Page 120.
Please observe thechapter "LEVELGAUGE"
on Page 63.

Check engine warning light

If the warning lightsinthe instrument panelandon-
board computer comeonand remain onwhile
driving, itsuggests:
- animproperly fastenedtankcap
or

- refuelling withengine running.
Opening
thefiller flap

The filler opening isunder thefiller flapinthe front
right fender.

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With thevehicle unlocked, pressonthe front
part ofthe filler flap
(arrow)
toopen theflap.
The filler flapiscentrally lockedalongwiththeoth-
er locks.
If
there isadefect inthe automatic unlocking
system:

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Open thepassenger door.

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Pull thering inthe right-hand dooraperture
(ar-

row).

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Maintenance, CarCare
21