engine PORSCHE 911 CARRERA 2003 4.G Repair Manual

~Closingconvertibletop
A
Warning!
Risk
ofinjuryanddamagewhenoperating
theconvertibletop.
[>

Makeabsolutelysurethatnobodycanbein-
juredbytheconvertible-topmechanismorthe
convertible-topcompartmentlid.
[>Inordertoabortconvertibletopoperationin
theeventofdanger,immediatelyreleasethe
switchorvehiclekey.
142MobileRoofs

[>
Keepthelidsofthemake-upmirrorsinthe
sunvisorsclosedwhenclosingtheconvert-
ibletop.
With
therockerswitch:
[>

Pressrightrocker-switchhalfwithoutinterrup-
tionuntiltheconvertibletophasreachedits
finalpositionoruntilthewindowsareinthe
desiredposition.
With
thevehiclekey:
[>

Holdthevehiclekeyinthelockingpositionin
thedoorlockuntiltheconvertibletophas
reacheditsfinalposition.

[>

Unlockthevehicle.
Closethewindowswiththerockerswitches
inthecenterconsole.
Re-Iockthevehicleifnecessary.

Iftheconvertibletopdoesnotlockinthe
windshieldframe
[>
Openconvertibletopagain,starttheengine
andclosetheconvertibletopagainusingthe
rockerswitch.
Assistwiththeclosingprocessbygrasping
theconvertibletopatthehandholdandpulling
ittowardthewindshieldframe(arrow).

e
Warning
light
Itlights
upwhentheignitionisswitchedonand
mustgooutwhentheengineisrunning.
Ifthewarninglightlightsupwiththeenginerun-
ning,theconvertibletopisnotinoneofitsend
positions.
I>Fullyopenorclosetheconvertibletop.
Driveonlywiththeconvertibletopfullyopen
orclosed.
Ifthewarninglightdoesnotgooutintheend
position,pleaseconsultanauthorizedPorsche
dealer.
Afaultispossible,oritmaybenecessaryto
adjusttheconvertible
top.
Ifthewarninglightflashes
whenoperatingthe
convertibletopwiththerockerswitch:
I>Checkwhethertheenginecompartmentlidis
closed.
Emergencyoperation
oftheconvertibletop
I>
Before
performingemergencyoperation,
pleasecheck:
Wastheignitionswitchedonandwastheen-
ginecompartmentlidclosedduringoperation
oftheconvertibletopwiththerockerswitch?
Areelectricalfusesdefective?
Refertothechapter"Electricalsystem".

A.Warning!
Thereisadangerofinjuryduringemer-
gencyoperation.
Thereisadangerofcrushingortrapping
bodypartsatallmovableconvertibletop
partswhichcouldcauseseriouspersonal
injury.

I>Takegreatcarewhenperformingemergency
operation.
I>Donotoperatetheconvertibletopduringand
afteremergencyoperation.
Before
emergencyoperation
I>
Removetheignitionkeysothattheconvert-
ibletopisnotoperatedunintentionally.

I>
Takescrewdriveroutofthetoolkit.Referto
thechapter"Toolkit".
I>Foldtherearseatbackrestsforward.

I>I>I>

MobileRoofs
143

Glassslidingroof
Readinessforoperation
-Withignitionswitchedon(engineonoroff)or
-Whendoorisclosedandignitionkeyis
removed,butonlyuntilthedoorisfirst
opened.
-Therear
lidmust
beclosed.
A.Warning!

Risk
ofinjuryanddamage.
I>Beforeopeningtheglassslidingroof,ensure
thattherearenopersonsorobjectsinthe
rangeofmovement.
~Opening
with
therockerswitch
I>Pressrighthalfofrockerswitchuntilthe
glassslidingroofreachesthedesiredposi-
tion.
Openingtheglassslidingroof
automaticallywhenunlockingthevehicle
(notavailableinallcountries)
I>Unlockcarwiththeremotecontrol.
I>Holdthecarkeyinthedoorlockinthe
unlockingpositionuntiltheglassslidingroof
hasreachedthedesiredposition.
A.
Warning!
Riskofinjuryanddamage.
I>
Beforeclosingtheglassslidingroof,ensure
thattherearenopersonsorobjectsinthe
rangeofmovement.
~
Closingwiththerockerswitch

I>Presslefthalfofrockerswitchuntiltheglass
slidingroofreachesthedesiredposition.
Closing
theglassslidingroof
automaticallywhenlockingthevehicle

(notavailableinallcountries)
I>Holdthecarkeyinthedoorlockinthelock-
ingpositionuntiltheglassslidingroofhas
reachedthedesiredposition.
I>I>I>
MobileRoofs
161

Rollerblind
Readinessforoperation
-Withignitionswitchedon(engineonoroff)or
-Whendoorisclosedandignitionkeyis
removed,butonlyuntilthedoorisfirst
opened.
Therollerblindcanbeoperatedindependently
oftheglassslidingroofposition.
162MobileRoofs
/!\Warning!
Riskofinjuryanddamage.
I>Beforeoperatingtherollerblind,ensurethat
therearenopersonsorobjectsintherange
ofmovement.
lJClosingwiththerockerswitch
l_JRetractingwiththerockerswitch
I>Pressappropriatehalfofrockerswitchuntil
therollerblindreachesthedesiredposition.
One-touchoperation
I>Touchappropriatehalfofrockerswitch.
Rollerblindmovestoitsfinalposition.
Touchtherockerswitchagaintostopinany
position.

Maintenance,CarCare
Cautions168
Powermeasurements168
Coolantlevel169,170
Engineoil170-173
Engineoillevel171
Engineoilrecommendation172,173
Brake-fluidlevel174
Fueleconomy,operatingyourcar
inothercountries175
Fuel,fillerflap,fueltank176,177
Fuelrecommendations177,178
Emissioncontrolsystem179,180
Fuelevaporationcontrol,
washerfluid181
Powersteeringfluidlevel182
Airfilter,particlefilter,
automatictransmissionfluid,
manualtransmissionoil183
Wiperblades184
Carcare185-193
Maintenance,CarCare
167

ExerciseExtremeCautionwhen
WorkingonyourVehicle

/!\Warning!
Ignoring
the
followinginstructionsmay
causeseriouspersonalinjury.

[>
Theenginecompartmentofanymotorvehicle
isapotentiallyhazardousarea.Ifyouarenot
fullyfamiliarwithproperrepairprocedures,do
notattempttheadjustmentsdescribedonthe
followingpages.
Thiscautionappliestotheentirevehicle.
[>Onlyworkonyourvehicleoutdoorsorina
wellventilatedarea.
[>Ensurethattherearenoopenflamesinthe
areaofyourvehicleatanytimewhenfuel
fumesmightbepresent.Beespeciallycau-
tiousofsuchdevicessuchashotwater
heaterswhichigniteaflameintermittently.
[>Beforeworkingonanypartintheenginecom-
partment,turntheengineoffandletitcool
downsufficiently.Hotenginecompartment
componentscanburnskinoncontact.
[>Bealertandcautiousaroundengineatall
timeswhiletheengineisrunning.
Ifworkhastobeperformedwiththeengine
running,alwayssettheparkingbrake,and
makesuretheshiftleverisinneutralorthe
selectorleverisinposition"P"or"N".
168Maintenance,CarCare
[>
Inparticular,beverycarefultoensurethat
itemsofclothing(ties,shirt,sleevesetc.),
jewelry,longhair,handorfingerscannotget
caughtintheengine-compartmentblower,
fan,beltsorothermovingparts.
Theradiatorandradiatorfansareinthefront
ofthecar.
Theengine-compartmentblowerismounted
ontheenginecompartmentlid.
Thefanscanstartorcontinuerunningasa
functionoftemperature,evenwiththeengine
switchedoff.
Carryoutworkintheseareasonlywiththe
engineoffandexerciseextremecaution.
[>YourPorscheisequippedwithanelectronic
ignitionsystem.Whentheignitionison,high
voltageispresentinallwiresconnectedwith
theignitionsystem;therefore,exerciseex-
tremecautionwhenworkingonanypartof
theenginewhiletheignitionisonortheen-
gineisrunning.
[>Alwayssupportyourcarwithsafetystandsif
itisnecessarytoworkunderthecar.The
jacksuppliedwiththecarisnotadequatefor
thispurpose.
[>
Whenworkingunderthecarwithoutsafety
standsbutwiththewheelsontheground,
makesurethecarisonlevelground,the
wheelsareblocked,andthattheenginecan-
notbestarted.
Removetheignitionkey.
[>
Donotsmokeorallowanopenflamearound
thebatteryorfuel.
Keepafireextinguisherinclosereach.
[>Incompleteorimproperservicingmaycause
problemsintheoperationofthecar.Ifin
doubtaboutanyservicing,haveitdoneby
yourauthorizedPorschedealer.
Impropermaintenanceduringthewarranty
periodmayaffectyourPorschewarranty
coverage.
[>Suppliesoffluids,e.g.engineoil,brakefluid
orcoolant,arehazardoustoyourhealth.
Keepthesefluidsoutofchildren'sreachand
disposeoftheminaccordancewiththeap-
propriateregulations.
[>Somecountriesrequireadditionaltoolsand
specialsparepartstobecarried.
Pleasemakeenquiriesbeforedrivingabroad.
Powermeasurements
Powermeasurementsondynamometersarenot
approvedbyPorsche.

Coolant
level

Followtheinstructionsinthe"Cautions"chapter.
Thecoolingsystemisfilledatthefactorywitha
permanentcoolant.
Itprovidesyear-roundprotectionfromcorrosion
andfreezingdownto-31°Fj-35°C(Nordic
countries-40°Fj-40°C).
OnlyuseantifreezeauthorizedbyPorsche.
Checkingcoolantlevel
Theexpansiontankwithitsfillerorificeisinthe
enginecompartment.
~Checkthecoolantlevelregularlythroughthe
transparentexpansiontank.
Whentheengineiscoldandthecarislevelthe
fluidlevelmustliebetweenthe"Min."and"Max."
markings.

Toppingoffcoolant

A.Warning!
Dangerofseriouspersonalinjuryfrom
scalding.Coolantishazardoustoyour
health,andmaybefatalifswallowed.
~Donotopenthecapoftheexpansiontank
whiletheengineishot.
~Allowtheenginetocooldownbeforeopening
thecapandprotectyourhands,armsand
facefromanypossibleescapeofhotcoolant.
~Keepcoolantoutofchildren'sreach.
~Also,keepcoolantawayfromyourpets.
Theycanbeattractedtoitshouldtherebea
spill,ortousedcoolantleftinanopencon-
tainer.Coolantcanbedeadlytopetsifcon-
sumed.
1.Switchengineoffandletitcool.
Seethechapteronthe"Coolingsystem".
2.Covertheexpansiontankcapwithathick
rag.
Opencapslowlyandcarefullyandallowover-
pressuretoescape.
Thenunscrewcapcompletely.
3.Onlyaddamixtureofantifreezeandwaterin
equalparts,anddonotexceedthe"Max."
mark.
Antifreezeincoolant:
50%givesprotectiondownto-31°Fj-35°C
60%givesprotectiondownto-58°Fj-50°C
4.Screwcapfirmlyon.
Ifinanemergencypurewaterhasbeenadded,
themixratiomustbecorrectedatanauthorized
Porschedealer.
Markedlossofcoolantindicatesleakageinthe
coolingsystem.
Thecauseshouldimmediatelyberemediedat
anauthorizedPorschedealer.
~~~
Maintenance,CarCare
169

Engine-compartment
blower,

radiatorfan
Theradiatorandradiatorfansareinthefrontof
thecar.
Theengine-compartmentblowerismountedon
theenginecompartmentlid.
/?\.Warning!
Riskofinjury.
Aftertheengineisswitchedoff,theengine-
compartmentandcoolanttemperaturesare
monitoredforapprox.20minutes.
Duringthisperiod,anddependingontem-
perature,theengine-compartmentblower
andradiatorfansmaycontinuetorunor
starttorun.
I>Carryoutworkintheseareasonlywiththe
engineoffandexerciseextremecaution.
170Maintenance,CarCare
EngineOil
Engineoilconsumption
Itisnormalforyourenginetoconsumeoil.
Therateofoilconsumptiondependsonthe
qualityandviscosityofoil,thespeedatwhich
theengineisoperated,theclimate,roadcondi-
tionsaswellastheamountofdilutionandoxida-
tionofthelubricant.
Ifthevehicleisusedforrepeatedshorttrips,
andconsumesanormalamountofoil,theen-
gineoilmeasurementmaynotshowanydropin
theoillevelatall,evenafter600miles(1000
km)ormore.Thisisbecausetheoilisgradually
becomingdilutedwithfuelormoisture,makingit
appearthattheoillevelhasnotchanged.
Thedilutingingredientsevaporateoutwhenthe
vehicleisdrivenathighspeeds,asonanex-
pressway,makingitthenappearthatoilisex-
cessivelyconsumedafterdrivingathighspeeds.
Iftheconditionsyoudriveyourvehicleinare
dusty,humid,orhot,thefrequencyoftheoil
changeintervalsshouldbegreater.
Ifthevehicleisdrivenatahighrateofspeed,
climaticconditionsarewarm,andtheloadis
high,theoilshouldbecheckedmorefrequently,
asdrivingconditionswilldeterminetherateof
oilconsumption.
-Theengineinyourvehicledependsonoilto
lubricateandcoolallofitsmovingparts.
Therefore,theengineoilshouldbechecked
regularlyandkeptattherequiredlevel.
-Makeitahabittohavetheengineoillevel
checkedwitheveryfuelfilling.
-Theoilpressurewarninglightisnotanoil
levelindicator.
Theoilpressurewarninglightindicates
seriousenginedamagemaybeoccuring
whenlit,ifenginerpmisaboveidlespeed.

Engine
Oillevel

Followtheinstructionsinthe"Cautions"chapter.
t>Regularlychecktheoillevelusingthe
on-boardcomputereachtimethevehicleis
refuelled.
Refertothechapter"On-boardcomputer".
A.Warning!
Engineoilishazardoustoyourhealthand
maybefatalifswallowed.
t>Keepengineoiloutofchildren'sreach.
Usedengineoilcontainschemicalsthat
havecausedcancerinlaboratoryanimals.
t>Alwaysprotectyourskinbywashingthor-
oughlywithsoapandwater.
Thedipstickandoilfillerareintheenginecom-
partment.
PreconditionsforCOlTectoillevel
measurementwiththedipstick
-Vehiclemustbelevel.
-Enginemustbeswitchedoffandatoperating
temperature.
-Letengineoilflowintotheoilpanforafew
minutesaftertheenginehasstoppedrunning.
Checkingtheoillevel
1.Withdrawdipstickandwipeitwithaclean,
lint-freecloth.
2.Pushdipstickfullyhome,withdrawagainand
readofftheoillevel.
Pushdipstickinasfarasthestop.
Theoillevelmustinnocasefallbelowthemini-
mumorexceedthemaximumoillevelonthe
dipstick.
Thedifferencebetweenthetwomarksisap-
proximately
1.25
litersj1.33quarts.

Topping
offengineoil
1.Ifnecessary,addengineoilhalfaliterata
time.Unscrewthecapoftheoilfiller.
2.Checkoillevelwiththedipstickagainaftera
fewminutes.
3.Pushdipstickinasfarasthestop.
Pushfillingaidinwiththecapandclosecap
carefully.
Maintenance,CarCare
171

AmbienttemperatureSAEViscosityRangeAmbienttemperaturesSAEViscosityRange
(seasonal)Mineraloilbased(seasonal)Syntheticoilbased
engineoilsengineoils
generallyhigherthan15W-40generallyhigherthan10W-40
50°FjlO°C20W-5050°FjlO°C15W-40
20W-4015W-50
generallylowerthan15W-40generallylowerthan10W-40
50°FjlO°C10W-4050°FjlO°C10W-30
10W-305W-30
generallylowerthan10W-30
14°Fj-1O°C5W-30
EngineOilRecommendation
Recommendedoilviscosityrangesdependentonambienttemperatures:
UseonlyengineoilslabelledasAPISHorSJ,orILSACGF1andviscositygradesofSAE10W-40orhigher.
Preferablyyoushouldusesyntheticorsemisyntheticengineoils.
IfindoubtaskyourauthorizedPorschedealerforPorschetestedandapprovedall-seasonoils.
172Maintenance,CarCare