2003 PORSCHE 911 CARRERA check engine

Unleadedfuelsmaynotbeavailableoutsidethe
continentalU.S.andCanada.Therefore,werec-
ommendyoudonottakeyourcartoareasor
countrieswhereunleadedfuelmaynotbeavail-
able.

Octaneratings

Octaneratingindicatesafuel'sabilitytoresist
detonation.Therefore,buyingthecorrectoctane
gasisimportanttopreventengine"damage".
TheRONoctaneratingisbasedontheresearch
method.TheCLC(U.S.CostofLivingCouncil
octanerating)orAKI(antiknockindex)octane
ratingusuallydisplayedonU.S.fuelpumpsis
calculatedasresearchoctanenumberplus
motoroctanenumber,dividedby2,thatiswrit-
tenas:
RON+MON
2
orR+M
2
TheCLCorAKIoctaneratingisusuallylower
thantheRONrating:
Forexample:95RONequals90CLCorAKI
178Maintenance,CarCare
Fuels
containing
alcohol
andether

SomeareasoftheU.S.requireoxygenated
fuelsduringcertainportionsoftheyear.Oxyge-
natedfuelsarefuelswhichcontainalcohols
(suchasmethanolorethanol)orether(suchas
MTBE).
Undernormalconditions,theamountofthese
compoundsinthefuelwillnotaffectdriveability.
YoumayuseoxygenatedfuelsinyourPorsche,
providedtheoctanerequirementsforyourve-
hiclearemet.Werecommend,however,to
changetoadifferentfuelorstationifanyofthe
followingproblemsoccurwithyourvehicle:
-Deteriorationofdriveabilityandperformance.
-Substantiallyreducedfueleconomy.
-Vaporlockandnon-startproblems,especially
athighaltitudeorathightemperature.
-Enginemalfunctionorstalling.
Fuels
containing
MMT
SomeNorthAmericanfuelscontainanoctane
enhancingadditivecalledmethylcyclopentadienyl
manganesetricarbonyl(MMT).
Ifsuchfuelsareused,youremissioncontrol
systemperformancemaybenegativelyaffected.
Thecheckenginewarninglightonyourinstru-
mentpanelmayturnon.
Ifthisoccurs,Porscherecommendsyoustop
usingfuelscontainingMMT.
PortableFuelContainers

A
Danger!
Portablefuelcontainers,fullorpartially
empty,mayleakcausinganexplosion,or
resultinfireincaseofanaccident.

t>Nevercarryadditionalfuelinportablecon-
tainersinyourvehicle.

Power
Steering

Thehydraulicfluidreservoirislocatedintheen-
ginecompartment.
Note
Theflownoiseheardatfullsteeringlockisde-
sign-relatedanddoesnotindicateadefectin
thesteeringsystem.
182Maintenance,CarCare
/!\Warning!
Risk
of
accident.
Whentheengineisstopped(e.g.whenon
tow)orthepowersteeringhasfailedthere
isnosteeringassistance.
Therefore,substantiallymoreforcewill
havetobeexertedinordertosteer.
I>Exercisegreatcarewhenbeingtowed.
I>Havethefaultremediedatyournearestauth-
orizedPorschedealer.
Checkinghydraulicfluid
Followtheinstructionsinthe"Cautions"chapter.
OnlyusehydraulicfluidauthorizedbyPorsche.
Specification:seechapteron"Capacities".
Checkthefluidlevelwiththeenginestopped
andcold(approximately
68°F
j20°C).
1.Opentheenginecompartmentlid.
2.Openthereservoircap.
3.Wipemeasuringrod.
Closelidandreopen.Thefluidlevelshouldlie
intheareabelowthe"Cold"marking.
Addhydraulicfluidifnecessary.
4.Closecapcarefully.
Closeenginecompartmentlid.
Noticeablelossoffluidindicatesleakageinthe
system.
Thecauseshouldberemediedimmediatelyat
anauthorizedPorschedealer.

AirFilter
Adirtyairfilternotonlyreducesengineperfor-
mance,butcanleadtoprematureenginewear.
Regularfilterreplacementispartoftheroutine
maintenanceservice.
t>Industyconditions,checkthefilterelement
morefrequentlyandreplaceifnecessary.
ParticleFilter
Thefreshairpassingthroughtheparticlefilter
intothepassengercompartmentisvirtuallyfree
ofdustandpollen.
t>Iftheoutsideairispollutedbyexhaustfumes,
pressthecirculating-airbutton.
Adirtyfiltercanbethecauseofreducedair
flow:
t>Havefilterreplacedbyyourauthorized
Porschedealer.
Regularfilterreplacementispartoftheroutine
maintenanceservice.
AutomaticTransmissionFluid
Thetorqueconverterandthetransmissionare
lubricatedwithAutomaticTransmissionFluid
(ATF).Thefinaldriverequirestransmissionoil.
See"Capacities".
Donottowthecarorruntheenginewithout
ATFinthetransmission.Theautomatictrans-
missionmaybedamagedbyevenatinyspeck
ofdirt,onlyacleanfunnelorspoutmustbe
usedwhenaddingATF.
TheATFandtransmissionoilhastobechecked
andchangedattheintervalslistedinyourMain-
tenanceSchedule.
WerecommendthatyouhavetheATFandtrans-
missionoilchangedatyourPorschedealer,who
hastherequiredlubricantsandthenecessary
fillingequipment.
Ifyoususpectanoilleakinthetransmission,
haveyourauthorizedPorschedealercheckit
outimmediately.
ManualTransmissionOil
Thetransmissionoilhastobecheckedand
changedattheintervalslistedinyourMainten-
anceSchedule.See"Capacities".
Werecommendthatyouhavethetransmission
oilchangedatyourPorschedealer,whohasthe
requiredlubricantsandthenecessaryfilling
equipment.
Ifyoususpectanoilleakinthetransmission,
haveyourauthorizedPorschedealercheckit
outimmediately.
Maintenance,CarCare
183

Storing
yourPorsche
IfyouintendtostoreyourPorscheforapro-
longedperiod,pleaseconsultyourauthorized
Porschedealer.Thestaffwillbegladtoadvise
youonthemostsuitableandnecessary
methods.
I>Cleanyourvehiclethoroughlyinsideandout-
side.
Cleantheenginecompartment.
Theundercarriageandchassiscomponents
shouldbefreeofdirtandsaltdeposits.
I>Fillupthefueltank.
I>Changetheoilandoilfilter,andruntheen-
gineforseveralminutes.
I>Increasethetirepressureto58psi(4bar).
Itisnotrecommendedtoliftthevehicle,due
tothepossibilityofcorrosiononshockabsor-
berpistonshafts.
Thevehicleshouldbemovedslightly,approxi-
matelyeveryfourweeks,topreventflatspot
onthetires.
Climatecontrol
Theairconditioningsystemshouldbeingood
workingconditionandfullycharged.
Windshield/Headlightwasher
I>Checkandcorrectantifreeze/cleaningsolu-
tionlevelasnecessary.
Electricalsystem
I>Removethebatteryfromthevehicleand
storeitinacooldryplace,notonacement
floor.
Whenthebatteryisdisconnected,the
alarmsystemisdeactivated.
I>Rechargethebatteryevery3months.Ifthe
batteryremainsinthevehiclewiththecables
connected,itisnecessarytocheck,remove
andrechargethebatteryevery2-3weeks.

Donotfastchargethebattery.
I>
Followtheinstructionsinthe"Battery"chap-
ter.
Vehicle
interior
The
interiormustbedry,especiallyinthearea
ofthefloorcarpets.Theuseofdryingagents
(Silica-Gel)isrecommendedinvehicleswith
leatherinteriorandinareaswithhighhumidity.
Therecommendedamountis3fabricbagsof
1.1Ibs.(500grams)eachplacedonthefloor
carpets.
Windows,doors,lidsandroofmustbeclosed.
Theairflapsshouldbeopened.
Maintenance,CarCare
193

Connectjumpercablesinthefollowingse-
quence:
1.Checkelectrolytelevelofeach
cell.If
necessary,fillwithdistilledwatertojust
aboveplates.
2.Onavehiclewithadischargedbattery:turn
offallconsumersandaccessories,movethe
gearshiftleverintotheneutralpositionand
settheparkingbrake.
3.Openthecapofthepositiveterminalfor
jumpstarting
(+).
+=
Positiveterminalforjumpstarting

-=
Groundingpointforjumpstarting
4.Attach
thepositivecable
firsttothepositive
terminalforjumpstarting(+).
thentothepositiveterminalofthebooster
battery.
5.Connect
thenegativecable
firsttothene-
gativeterminaloftheboosterbattery,
thentothegroundingpointforjumpstarting
H.
6.Runtheengineoftheboostercaratahigher
speed.
7.Starttheengine.
Anattemptedstartusingjumpercables
shouldnotlastmorethan
15
seconds.Then
allowawaitingperiodofatleastoneminute.
8.Withtheenginerunning,disconnectbothjum-
percablesinreverseorder.
Closethelidofthejumpstartbox.
PracticalTips,EmergencyService
221

Tai/lightleft
TailLight
911Carrera,Carrera4,Targa
Changingbulb
1.Openlidofenginecompartment.
2.UnscrewboltAandpulltaillightback(arrow)
andout.
A-Tai/light,brakelight
B-Reversinglight
C-Turnsigna/light
D-Rearfoglight
E-Sidemarkerlight
3.Turnbulbholdercounterclockwiseand
removefromtaillight.
4.Replacedefectivebulb(bayonetmount).
5.Insertbulbholderandturnclockwise.
6.Inserttaillightinthefender.
Ensurethatlocatinglug(arrow)iscorrectly
positioned.
ScrewinboltA.
Checkoperationofthelight.
PracticalTips,EmergencyService
231

Taillight,left
TailLight

CalTera
45
Changingbulb
1.Openenginecompartmentlid.
2.UnscrewfasteningscrewsAwithascrew-
driverandpulltaillightbackandout.
232PracticalTips,EmergencyService
A-Reversinglight
B-Turnsigna/light
C-Taillight;brakelight
D-Taillight
E-Rearfoglight
F-Sidemarkerlight
3.Turnbulbholderinthetaillighthousing
counter-clockwiseandpullitout.
4.Turndefectivebulbcounter-clockwise(bay-
onetlock)andreplaceit.
5.Insertbulbholderandturnitclockwise.
6.Inserttaillightinthewing.
Ensurethatlocatinglug(arrow)iscorrectly
positioned.
7.Slightlyscrewinbothfasteningscrewsofthe
taillight.
Alignthetaillightwiththevehiclecontours
andtightenthescrews.
8.Checkoperationofthelight.

LicensePlateLights
Changingbulb
1.UndobothscrewsAandremovelight.
2.Pushrubbercoveringback,removedefective
bulbfrombetweenthecontactspringsand
replace.
3.Reassembleinreverseorder.
Checkoperationofthelight.

Luggage
CompartmentLight,
EngineCompartmentLight,
FootwellLights
Changingbulb
1.Withascrewdriver(arrow),carefullypress
lightoutofthecutoutinthelining.
2.Removedefectivebulbfrombetweenthe
contactspringsandreplace.
3.Insertthelightintothecutoutfirstfromone
sidethenfromtheother.Checkoperation.
DoorGuard/KerbLight
Changingbulb
1.Withascrewdriver(arrow),carefullypushout
thelight.
2.Pullbulbholderoutoflighthousing.
Removedefectivebulbandreplace.
3.Installbulbholderandinsertlight.
PracticalTips,EmergencyService
233