Page 207 of 263

A.Warning!
Riskofanaccident.
Forsafetyreasons,thefollowinginstruc-
tionsfortheuseofthesparewheelmust
befollowedexactly.
I>Refertothechapter"Spacerrings"before
fittingthesparewheel.
Ifincorrectlyfitted,thesparewheelmay
comeoffwhilstdriving.
I>Checkthetirefillingpressureimmediately
afterfittingthesparewheel.
I>Thesparewheelmustbeusedonlyover
shortdistancesincasesofemergency.
Afterrepairorreplacement,re-mountthe
roadwheelandtireassoonaspossible.
I>Avoidrapidacceleration,hardbrakingand
highcorneringspeedstopreventlossofve-
hiclecontrol.
Themaximumpermittedspeedis50mphj
80km/handmustnotbeexceededbecause
ofaltereddrivingcharacteristicsandforrea-
sonsofwear.
Thetreaddepthofthesparewheelissubject
tothesamelawsastheoriginaltires.
I>Thevehiclemustbefittedwithonlyone
sparewheel.
I>Donotuseasparewheelfromothervehicles
onyourcar.
Likewise,thesparewheelfromyourvehicle
mustnotbeusedonothercars.
I>Toavoiddamage,donotuseautomaticcar
washeswhenthesparewheelisinstalled.
Spacer
Rings
A.Warning!
Risk
of
accident.
Ifincorrectlyfitted,the
sparewheelmaycomeoffwhiledriving
whichcouldresultinseriouspersonalinjury
ordeath.
I>5mmspacerringsonfrontandrear
axles:
If5mmspacer
ringsarefittedtothewheel
hubs,
donotremove
thesebeforefittingthe
sparewheel.
I>17mmspacerringsonrearaxle:
If17mmspacer
ringsarefittedtothewheel
hubs,theappropriatespacerringmustbe
removedbeforethesparewheelisfitted.
Tomountthesparewheel,usethewheel
boltswhichwereusedtofastenthespacer
ring.
PracticalTips,EmergencyService
207
Page 208 of 263

WheelBolts
/!\Warning!
Riskofwheelboltbreakageandwheelsep-
aration,resultinginseverepersonalinjury
ordeath.
[>
Followallinstructionsconcerningwheelbolts.
208PracticalTips,EmergencyService
[>Alwayscleanthewheelboltsbeforefitting.
[>ApplyathincoatofOptimolyTA(aluminium
paste)onthethreadandbetweenthebolt
headandmovablesphericalcapring(arrows).
Thebearingsurfaceofthesphericalcap
facingthewheelmustnotbegreased.
[>Replacedamagedwheelbolts.
OnlyusetheOriginalPorschewheelbolts
speciallydesignedforthisvehicletype.
Note
Onvehicleswith17mmspacerringsonthe
rearaxle,thewheelsaresecuredwithnuts.
Tighteningtorque
Tighteningtorqueofwheelboltsandwheelnuts:
130Nm.
WheelSecuringBolts
Thewrenchsocketforthewheelsecuringbolts
isinthetoolpocket.
Toloosenortightenthewheelboltwithanti-theft
protection,awrenchsocketwiththeappropriate
codingmustbeusedbetweenthewheelbolt
andthewheel-boltspanner.
[>Whenpositioningthewrenchsocket,ensure
thatitengagesfullyintheteethofthewheel
bolt.
Ifthewheelshavetoberemovedatthework-
shop,pleasedonotforgettohandoverthe
wrenchsocketforthewheelsecuringbolts
alongwiththecarkey.
Page 210 of 263

Jackingpointforfrontwheelchange
1.Slightlyloosenthewheelboltsofthewheel
tobechanged.
2.Setupjackonlyatthepointsprovided.
Thejackfootmustbeincontactoverits
wholearea.
Useasuitablesupportifnecessary.
3.Holdjackstillandwinditupuntilitshead
entersthejackingpointonthecar.
Onlyjackcarupuntilthewheeltobe
changediscompletelyofftheground.
210PracticalTips,EmergencyService
Jackingpointforrearwheelchange
4.Removetopwheelboltandscrewinassem-
blyaidfromthetoolkit.
Removetheremainingwheelbolts.
5.Changewheel.
6.Pleasenotechapter"Wheelbolts".
Insertfourwheelboltsandtightenbyhand.
Removeassemblyaid,screwinremaining
bolt.
Initiallytightenscrewsindiagonallyopposite
sequencesothatthewheeliscentered.
Referto"Spacerrings"and"Collapsiblespare
wheel"ifnecessary.
Screwinginassemblyaid
7.Lowercarandremovejack.
8.Tightenwheelboltsindiagonallyopposite
sequence.
Importantnote
Immediatelyafterchangingawheel,adjustthe
tirefillingpressure(refertoPage5)andusea
torquewrenchtochecktheprescribedtighte-
ningtorqueofthewheelbolts(130Nm).
Page 211 of 263
Collapsiblesparewheel
Refertothechapter"Spacerrings"beforefitting
thesparewheel.
Ifincorrectlyfitted,thesparewheelmaycome
offwhilstdriving.
1.Mountthecollapsiblesparewheelonthe
vehiclebeforeinflatingit.
2.Screwfillerhoseofthecompressorontothe
tirevalve.
3.Insertplugofthecompressorintotheciga-
rettelighter.
Therequiredfillingpressurewillbereached
afterafewminutes.
4.Checkfillingpressurewiththepressuretes-
ter.
Requiredfillingpressure:
36psi(2.5bar).
Ifthepressureistoohigh,releasesomeair
bypressingthevalveinsert.
Afterusingthecollapsiblesparewheel
I>Releaseairbyunscrewingthevalveinsert.
Thetirewillreverttoitsoriginalshapeonly
afterseveralhours.Onlythencanitbe
stowedinthesparewheelrecessinthe
luggagecompartment.
Repair
I>Thecollapsiblesparewheelmustberepaired
onlybythemanufacturer.Pleaseconsultyour
authorizedPorschedealerifthecollapsible
sparewheelisdefective.
PracticalTips,EmergencyService
211
Page 213 of 263

A-Diagnosticsocket
Replacing
fuses
Inordertopreventdamagetocablesandcon-
sumersintheelectricalsystemduetoshortcir-
cuitsandoverloads,theindividualcircuitsare
protectedbyfuses.
Thefuseboxisatlowerleftinthedriver'sfoot-
wellandisprotectedwithaplasticcover.
A-Plasticgripper
B-Sparefuses
1.Beforereplacingafuse,switchoffallelectri-
calconsumersandremovetheignitionkey.
2.Toopen,pullthecoveroffatthefingerhole
(arrow).
Thefuseplanandinstructionsforemer-
gencyunlockingoftheluggagecom-
partmentlidscanbefoundontheinsideof
thecover.
3.Tocheckorreplaceafuse,removeitfrom
thespringclipusingtheplasticgripperA.
Ablownfuseindicatesanoverloadinthecir-
cuitandcanbeidentifiedbythemeltedmetal
strip.
4.Replaceonlywithfusesofthesamerating.
SparefusesBareinthelowestsectionof
thefusebox.
Importantnote
t>Ifafuseblowsrepeatedly,pleaseimmediately
consultanauthorizedPorschedealer,sothat
theshortcircuitcanbelocatedandcor-
rected.
t>Nevertryto"repair"fuses:youmaycause
seriousdamagetootherpartsoftheelectri-
calsystem.
t>t>t>
PracticalTips,EmergencyService
213
Page 216 of 263

Batterycare
[>
Ensurethatbatteryissecurelymounted.
[>Keepterminalsandconnectionscleanand
properlytightened.
Corrosioncanbepreventedbycoatingthe
terminalsandconnectionswithpetroleumjelly
orsiliconespray.
[>
Ensurethatventcapsaresecurelytightened
topreventspillage.
216PracticalTips,EmergencyService
Checkingtheelectrolytefluidlevel
Generally,theelectrolytelevelmustbechecked
moreofteninsummerthaninthewinter,and
moreoftenwhendrivinglongdistances.
[>Whenaddingwater,useonlycleanvessels.
Innocasemayalcohol(e.g.windowcleaner
residues)bepermittedtoenterthebattery.
[>
Unscrewandopenthefillerventcapsofeach
cell.
Withthecarhorizontal,thefluidlevelshould
meettheindicatormarkineachcell.
[>
Ifnecessary,topupwithdistilledwater.
Donotuse
acid.
Onlyfilluptothemark,otherwisetheelectro-
lytewilloverflowwhenthebatteryisbeing
chargedandcausedamage.
Batterycharging
Automotivebatteriesloosetheirefficiencywhen
notinuse.
Thechargeavailableinyourbatterycanbe
measuredwithabatteryhydrometer.
Werecommendthatthebatteryvoltagebe
testedbyyourPorschedealerwhohastheap-
propriateequipment.
Ifthecarisnotdrivenforprolongedperiods,
thebatterymustbechargedatleastevery6
weeks.
Adischargedbatteryallowsrapidformationof
sulfates,leadingtoprematuredeteriorationof
theplates.
Page 238 of 263

~Neverusethetowingeyetotowthisorany
othervehicle.
Certainstatestatutesandlocalordinancespro-
hibittowingwithachain,ropeorevenatow
bar.
Inaddition,damagetoyourvehiclemayresult
fromimproperprocedures.
ConsultyourauthorizedPorschedealerforde-
tails.
Vehicletowing
Flatbedtowingisthepreferredtypeoftowing
tobeusedonPorschevehicles.
Undercertaincircumstances,wheelliftsmaybe
usedwhenthevehiclewillnotroll.
Thevehicle
must
betowedwithallfour
wheelsofftheground,otherwisedamageto
thevehiclemayresult.
Towingeye
Thetowingeyeiscontainedinthetoolkit.
ACaution!
Riskofdamagetothevehicle.
~Usethetowingeyeonlyforanemergencyto
removethevehicleofftheroad.Thetowing
eyeistobeusedonlytopullthevehicleonto
theflatbed,tractorortowingaparatusifthe
vehiclewillrollfreely.Undernocircumstances
isthevehicletobesecuredusingthetowing
eye.
238PracticalTips,EmergencyService
Towing
Frontmounting
1.Carefullyremovetheplasticcapbesidethe
licenseplatewithascrewdriver.
2.Screwthetowingeyeintothehole.
Rearmounting
1.Removelicenseplate.
2.Carefullyremovetheplasticcapbetweenthe
bumperswithascrewdriver.
3.Screwthetowingeyeintothehole.
Page 248 of 263
Tire
andrimsizesExtensivetestsareperformedbeforespecifictiresandwheelsareapprovedbyPorsche.
YourPorschedealerhasinformationaboutapprovedtiresandwheelsandishappytoassistyou.
Ifaftermarkettiresand/orwheelsareinstalledwhicharenotapprovedbyPorsche,thevehicle'sroadabilityandhandling
characteristicsmightbeimpaired.SincePorschehasnodataonsuchcombinations,Porschecannotstandbehind
thesafetyordurabilityoftheseaftermarketcombinations.
SnowchainsCanbemountedonlyontherearwheels;maximumspeed30mph/50km/h,
UseonlyPorscheauthorizedfine-linkcross-typeoredgechains.
Snowchainclearancecanbeguaranteedonlyonthetire+rimcombinationmarked*,
Sparewheel911Carrera:T105/95R17high-pressuretireon3.5Jx17rim.
911Carrera4,Carrera4S:165/70R1692Pcollapsibletireon5.5Jx16rim.
Maximumspeed50mph/80km/h,Alwayscomplywiththeinstructionsinthechapter"Sparewheel",
248TechnicalData