2003 PORSCHE 911 CARRERA ECU

Gearshifting
Thepositionsofthegearsareshownonthe
gearshiftlever.
/!\.Warning!
Riskofanaccident.
I>Alwayscheckthemovementoftheclutch
pedalbeforedrivingandmakesurethatitis
notobstructedbyafloormatoranyother
object.
I>Securethefloormattopreventitfromsliding
intopositionsthatcouldinterferewiththe
safeoperationofyourvehicle.
YourPorschedealercanofferyoufloormats
ofthecorrectsizeincludingasecuringpossi-
bility.
Toavoiddamagetotheclutchandtrans-
mission:
I>Alwaysdepresstheclutchpedalfullywhen
changinggears.
Makesurethatthegearshiftleveriscom-
pletelyengaged.
I>Onlyshiftintoreversewhenthecarhascome
toacompletestop.
128ShiftingGear
Reverse
I>Depresstheclutchpedalforseveralseconds
beforeshiftingintoreverse.
Onlythenmovethegearshiftlevertotheleft,
overcomingthespringtension,andthento
thefront.
Bothback-uplightscomeonwhenthetrans-
missionisputintoreverse(withignitionon).

Permittedenginespeed

~
I>Changeintoahighergearbeforetheneedle
reachestheredmarkonthetachometer,or
easeofftheaccelerator.
Iftheredzoneisreachedduringacceleration,
fuelfeedisinterrupted.
/!\.Caution!
Toavoidsevereenginedamage.
I>Alwaysobservetheenginerpmbeforedown-
shiftingtoalowergear,soyoudonotex-
ceedthemaximumenginerpm.

M-ManualSelectionMode

Thecurrentlyselectedgearisretainedifyou
changefromDtoM.
IfyoushiftfromMtoD,thegear-changingmap
suitableforyourcurrentdrivingstyleisselected
andtheappropriategearisselected.

/?\.Warning!
Thekickdownfunctionisnotactivein
manualselectionmode"M",
t>
Thereforeshiftdownmanuallywhenaccelera-
ting(e.g.toovertake).
Twotoggleswitchesintheuppersteering-wheel
spokesletyoucomfortablyandreliablyselect
thefiveforwardgears.

Shiftingup
t>
Pressupperpart(+)ofatoggleswitch.

Shiftingdown
t>
Presslowerpart(-)ofatoggleswitch.
Dependingondrivingspeedandenginespeed,
youcanshiftupordownatanytime.
Gearchangeswhichwouldexceedtheupperor
lowerengine-speedlimitarenotexecutedbythe
controller.
Youcanshiftdowntwogearsatoncebyquickly
pressingthetoggleswitchestwice.
Iftheengine-speedlimitisreached,anauto-
maticupwardshiftisperformedor,justbefore
idlingspeedisreached,adownwardshiftisper-
formed.

t>
Selectanappropriatelylowgearonupward
anddownwardslopes.
Thiswillensureoptimumuseofenginepower
andenginebraking.
Ifmanualmodefails,thecontrolelectronics
switchtoautomaticmode.Inthisevent,the
instrumentclusterwilldisplayselectorleverposi-
tionD.
t>Toremedythefault,pleaseconsultanauth-
orizedPorschedealer.

t>t>t>

ShiftingGear
133

Removingrearwalllining
1.UnscrewscrewsAfromtherear
walllining.
Pulloutandrepositionthescrewdriverinsert
ifnecessary.
2.Grasptherearwallliningatthecut-outsfor
theseatbeltsandpressdownward.
Pullrearwallliningforwardandliftupand
out.
144MobileRoofs

Openingconvertibletopcompartment
lid"D"
1.Take
redAllenkeyBoutofitsholder.
2.PuthandleofscrewdriverontoAllenkeyB.
InsertAllenkeyintothedriveaxleCandturn
itcounterclockwise(indirectionofthearrow)
untiltheconvertibletopcompartmentlidDis
fullyopen.
RemovetheAllen
key.
A
Warning!
TheAllenkeycanrotateorflyoutand
therebycauseseriouspersonalinjuryifthe
convertibletopisactuated.

I>AlwaysremovetheAllenkeyBfromthedrive
axleCbeforeoperatingtheconvertibletop.
Whenyouhaveopenedtheconvertibletopcom-
partmentlid,trytoclosetheconvertibletop
usingtherockerswitch.
Iftheconvertibletopcannotbeclosed,continue
withemergencyoperation.

RoofTransportSystem
Followtheseparateinstructionsforfitting
theRoofTransportSystem.
Fittingcommerciallyavailableluggageracksis
notpossible.
ThePorscheRoofTransportSystemallows
thetransportofvarioussportsandhobbyequip-
ment.
YourauthorizedPorschedealerwillbepleased
toinformyouaboutthemanyusesoftheRoof
TransportSystem.
166MobileRoofs
/!\Warning!
Riskofanaccident,lossofcontroland
damagetothevehicle.
I>CompletelyremovetheRoofTransportSys-
tembeforeusinganautomaticcarwash.
I>Donotoperatetheconvertibletopwhenthe
basiccarrierisinstalled.
I>Fitthesidesupportelementsofthebasiccar-
rieronlyinconjunctionwiththetransverse
supportingpipes.
I>Thepermissibleuseableloadof165Ibs(75
kg),thepermissibletotalvehicleweightand
thepermissibleaxleloadsmustnotbeex-
ceeded.
Seethechapteron"Weights".
Itemsofluggagemustnotprojectsubstan-
tiallybeyondthesideoftheloadarea.
Distributeloadevenly,withheavyitemsas
lowaspossible.
Everyitemmustbefixedandsecuredtothe
basiccarrierwitharopeorlashingstrap(do
notuseelasticrubbertensionersJ.
I>Beforeeveryjourney,andatregularintervals
duringlongtrips,checkthatRoofTransport
Systemandloadaresecure.
Retightenifnecessaryandsecureadditionally
bylocking.
I>Intheloadedstate,adjustmaximumspeedto
thenature,sizeandweightoftheloadbeing
carried.
Innocase,however,shouldyoudriveat
morethan90mph
(140
kmjhJ.
I>Withthebasiccarrierinstalledandnoload,
donotexceedamaximumspeedof110mph
(180kmjh)sincedrivingstabilitywillbead-
verselyaffected.
Adaptyourdrivingstyleandspeedtothe
changedconditions.
Nevertheless,Porscherecommendsthatyou
donotexceedthepostedspeedlimit.
I>Driving,brakingandsteeringbehaviorofthe
vehiclechangeduetothehighercenterof
gravityandthegreaterwind-resistantarea.
Youshouldadaptyourdrivingstyleappropri-
ately.
Note
Sincefuelconsumptionandnoiseareincreased
withtheRoofTransportSysteminstalled,it
shouldnotremainonthecarifitisnotinuse.

A-Passenger'sside
B-Driver'sside
WiperBlades
[>
Whenwiperperformancedeteriorates,replace
thewipers.
[>
Followtheinstructionsinthe"CarCare"chap-
ter.
184Maintenance,CarCare
/!\Caution!
Riskofdamageifthewiperarmacciden-
tallyfallsbackontothewindow.
[>Alwaysholdthewiperarmsecurelywhenre-
placingthewiperblade.
Riskofdamageifwiperbladesthatare
frozeninplaceareloosenedimproperly.
[>
Thawthewiperbladesbeforelooseningthem.
1.Pulloutignitionkey.
Foldwiperarmawayfromthewindow.
2.Presstogethertheplasticspringofthewiper
blade(rightarrow).
Pullwiperbladeoutofwiperarm.
3.Insertnewwiperbladeandensureiten-
gages.
Ensurethatthenewwiperbladegoesinto
thesameposition(directionofspoiler)inthe
wiperarmandengages.
4.Carefullyfoldwiperarmbackontothewin-
dow.

Fabric,upholstery,carpetsand
floor-mats
t>Useonlyavacuumcleaneroramediumstiff
brush.
t>RemovestainsandspotswithPorschestain
remover.
ThePorscherangeofaccessoriesincludes
floor-matstoprotectthecarpetsinsummerand
winter.
A
Warning!
Riskofanaccident.
t>Alwayscheckthemovementofthepedalsbe-
foredrivingandmakesurethattheyarenot
obstructedbyafloormatoranyotherobject.
t>Securethefloormattopreventitfromsliding
intopositionsthatcouldinterferewiththe
safeoperationofyourvehicle-donotlie
themlooselyinthevehicle.
YourPorschedealerwillbegladtoofferyou
floormatsofthecorrectsizeincludingase-
curingpossibility.
192Maintenance,CarCare
Alcantara
Donotusealeathercareproducttoclean
Alcantara.
Forregularcareitissufficienttocleanthe
coverwithasoftbrush.
Cleaningwhenlightlysoiled
t>Wetasoftclothwithwateroraneutralsoap
solutionandwipeoffthedirt.
Cleaningwhenheavilysoiled
t>Wetasoftclothwithlukewarmwateror
thinnedwhitespiritanddabthedirtfromthe
outsidein.

Safetybelts

Ifitbecomesnecessarytocleanthebelts,you
canuseanymildwashingagent.
Allowthebeltstodrypriortoretracting,but
avoiddirectsunlight.
t>Onlyusesuitablecleaners.
Ifunsuitablecleanersareusedoranyattempt
ismadetodyeorbleachthebelts,theweb-
bingmaybeweakenedandthusconstitutea
safetyrisk.

Tiredamage,puncture

I>Checktiresforimbeddedmaterial,cuts,punc-
tures,cracksandbulges(sidewall)before
drivingoff.
Incaseoftiredamage,whereitisuncertain
whetherthereisabreakintheplywithallits
consequencesortiredamagecausedbyther-
malormechanicaloverloadingduetolossof
pressureoranyotherpriordamage,werecom-
mendthatthetirebereplacedforsafetyrea-
sons.
Ifonefaultytireisreplaceditshouldbenoted
thatthedifferenceintreaddepthononeaxle
mustnotexceed30%.
Handlinginconsistenciesmayresult.
I>Performavisualinspectionifnecessary.

Tirereplacements

Ifindoubt,contactyourPorschedealeror
PorscheImporterofyourcountry.
Useonlytiremakesandtypestestedby
Porsche.

IfyoudonotuseaPorscherecommended
replacementtire,makesurethatyoupur-
chaseyournewtiresfromareputabletire
dealerandthatthedealercomplieswithall
manufacturerswarningsforthosetires.
Onlytireswiththesamemakeandwiththe
samespecificationcode(e.g."NO","Nl"...)
canbemounted.
Beforemountingnewtires,checkwithyour
Porschedealeraboutthecurrentrelease
status.
Usetireswith"ZR"qualitystandards.
There
arecurrentlynostandardsconcerningtire
strengthatspeedsabove150mph
(240
kmjhJ.
Tiresshouldbereplacednolessthanononeaxleat
thetime.
Onlytiresofthesamemakeandtypemustbeused.
Mixedtiresarenotpermissible.
Initially,newtiresdonothavetheirfulltraction.
Youshouldthereforedriveatmoderatespeeds
duringthefirst
60-120
miles(100-200kmJ.
Ifnewtiresareinstalledonlyononeaxle,ano-
ticeablechangeinhandlingoccursduetothe
differenttreaddepthoftheothertires.
Thishappensespeciallyifonlyreartiresarere-
placed.However,thisconditiondisappearsas
thenewtiresarebrokenin.
I>Pleaseadjustyourdrivingstyleaccordingly.
Installationofnewtiresshouldonlybedoneby
aqualifiedtiretechnician.

Valves

Rubbervalvestemsmustbereplacedevery
timeatireisreplaced.
Forsteelvalves,theinstallationandreplacement
instructionsmustbeobserved.
UseonlygenuinePorschesteelvalves.

Parkingatthecurb
A
Warning!
Hardimpactsagainstcurbs(ortraffic
islands)aredangerousandmaycausehid-
dentiredamagewhichisnotnoticeable
untillater.Suchdamagecanresultinacci-
dentsathighspeedscausingsevereper-
sonalinjury.
Dependingontheforceofimpact,theedge
oftherimcanalso
bedamaged.
I>Ifyouareindoubt,havethewheelchecked
byanexpert,particularlyifyoususpectdam-
ageontheinside.
I>Ifyoumustdriveoveracurborotherob-
stacle,driveslowlyandatanobtuseangle.
Exercisecarewhenparkingalongcurbs.
PracticalTips,EmergencyService
201

Spare
Wheel
Thesparewheelissecuredintheluggagecom-
partmentwithwingnuVwingscrewA.
Thereisaplasticsheetinthetoolpocketto
storethedamagedwheel.

Importantnote

Followallwarningsandinstructionsfoundinthis
manualforchangingawheel.
206PracticalTips,EmergencyService
911Carrera,Targa911Carrera4,Carrera45
911
CalTera,
Targa911Carrera
4,
CalTera4S
The911Carrera4isequippedwithacollapsible
sparewheelthatmustbeinflatedwiththeelec-
tricalcompressorwhenneeded.

Tirepressure:36psi(2.5bar).

I>Checkthepressureofthesparewheelregu-
larly:60psi(4.2bar).