2007 PORSCHE CAYMAN Instrument

TPCTirePressureMonitoring
Function
Pleaseobservethechapter”TIREPRESSUREFORCOLDTIRES”onpage299.
TheTirePressureMonitoringcontinuouslymoni-torstirepressureandtiretemperatureonallfourwheelsandwarnsthedriverwhenthetirepressureistoolow.
ThedisplayaswellasthesettingsfortheTirePressureMonitoringtakeplaceontheon-boardcomputer.However,youmuststilladjustthetirepressureonthewheel.
Thedriverisresponsibleforfillingthetirescorrectlyandmakingthecorrectsettingsontheon-boardcomputer.
TheTirePressureMonitoringoffersthefollowingfunctions:
–Displayoftheactualtirepressurewhilethevehicleisinmotion
–Displayofthedeviationfromtherequiredpressure(refillingpressure)
–Displayofcurrentlysettiresizeandtype
–Tirepressurewarningsintwostages
Caution!
DespitetheadvantagesofferedbytheTirePressureMonitoring,itisstillthedriver’sresponsibilitytoupdatethecorrespondingsettingsintheon-boardcomputerandmaintainthepressureinthetires.Lowtirepressurereducestheroadsafetyofthevehicleanddestroysthetireandwheel.
Whenaflattirehasbeendisplayed,immediate-lystopinasuitableplaceandcheckthetiresfordamage.Ifnecessary,remedythedamagewithatiresealant.
Donotbyanymeanscontinuetodrivewithdefectivetires.
Sealingthetirewithtiresealantisonlyanemergencyrepair,soyoucandrivetothenextauthorizedPorschedealer.Themaximumpermittedspeedis50mph(80km/h).
Donotdrivewithtireswhosetirepressuredropsagaininashortperiodoftime.Incasesofdoubt,havetirescheckedbyanauthorizedPorschedealer.
DamagedtiresmustbeimmediatelyreplacedbyanauthorizedPorschedealer.Tirerepairsarenotpermissibleunderanycircumstances.
IftheTirePressureMonitoringisdefective(e.g.defectivewheeltransmitter),contactanauthorizedPorschedealerimmediatelyandhavethedamagerepaired.ThetirepressurewillnotbemonitoredbyadefectiveTirePressureMonitoring.
Tiresloseairovertimewithoutatiredefectbeingpresent.Atirepressurewarningwillthenappearintheon-boardcomputerdisplay.Correctthetirepressureatthenextopportunity.
TheTirePressureMonitoringgivesawarningabouttiredamageduetonaturalpressurelossaswellasaboutagraduallossofpressureduetoforeignobjects.TheTirePressureMonitoringcannotwarnyouabouttiredamagethatoccurssuddenly(e.g.flattireduetoabruptexternaleffects).
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Settingsintheon-boardcomputer
Tirepressurefunctionoftheon-board
computer
Thetirepressurefunctionoftheon-boardcompu-terdisplaysthetirepressures(actualpressure)dependentontemperatureinthefourwheels.Youcanwatchthetirepressureriseasthetemperatureincreaseswhiledriving.Thisdisplayisonlyforinformation.
Undernocircumstancesshouldthetirepressuresbechangedbasedonthisdisplay.
Callingthetirepressurefunctionofthe
on-boardcomputer
Pushoperatingleverupordownuntilthetirepressurefunctionoftheon-boardcom-puterappears.(Theselectionfieldmustbeswitchedoff.)
PressureinfoinTirepressuremenu
Inaccordancewithphysicalprinciples,theairpressurechangesasthetemperaturechanges.Thetirepressureincreasesordecreasesbyaround1.5psi(0.1bar)forevery18°F(10°C)changeintemperature.
TheTirePressureMonitoringtakesthisrelationshipbetweentirepressureandtemperatureintoaccount.
Youcanreadthetirepressurestobecorrect-edinthisdisplay.
Thetirepressuretobecorrected(refillpressure)isindicatedonthedisplayedwheel.Example:If“-1.5psi(-0.1bar)”isdisplayed,1.5psi(0.1bar)mustbeaddedtothistire.
Note
TheTirepressuremenucanonlybecalledupwhenthevehicleisstationary.
Callingupthe“Infopressure”display
Pushoperatingleverforwardinordertoswitchontheselectionfield.
Select“TPC”withtheoperatinglever.
Pushoperatingleverforward.ThedisplaychangestotheTirepressuremenu.
Select“Infopressure”withtheoperatinglever.
Pushoperatingleverforward.
Note
Aftertheignitionisswitchedon,itcantakeuptoapprox.1minutebeforealltirepressuresaredisplayed.Dashes(“-.-”)appearinsteadofthetirepressures.
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TiretypeinfoinTirepressuremenu
Informationaboutthecurrentlysettires:
–Tiretype:Summertires,wintertires
–Tiresize:17,18,19inch
“Infotires”showsthecurrenttiresettings.
Callingupthe“Infotires”display
Pushoperatingleverforwardinordertoswitchontheselectionfield.
Select“TPC”withtheoperatinglever.
Pushoperatingleverforward.ThedisplaychangestotheTirepressuremenu.
Select“Infotires”withtheoperatinglever.
Pushoperatingleverforward.
Tireselectioninthe“Set”menu
Pushoperatingleverforwardinordertoswitchontheselectionfield.
Select“TPC”withtheoperatinglever.
Pushoperatingleverforward.ThedisplaychangestotheTirepressuremenu.
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Select“Set”withtheoperatinglever.Pushtheoperatingleverforward.
Selectdesiredtiretype:summerorwinter.
Pushoperatingleverforward.Adisplayforconfirmingtheselectedtypeoftireappears.
Select“Continue”andpushtheoperatingleverforward.
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Selecttheappropriatetiresize(17,18or19inch)andpushoperatingleverforwards.Adisplayforconfirmingtheselectedtiresizeappears.
Note
Thismenuisonlydisplayedwhendifferenttiresizesareapproved.
Select“Continue”andpushtheoperatingleverforward.Settingofthetirecharacteristicshasonlybeensuccessfullycompletedwhenthemessage“Processcomplete”isdisplayedbytheon-boardcomputer.
Selectarrow(Back)andpushtheoperatingleverforward.ThedisplayreturnstotheTirepressuremenu.Theon-boardcomputeradditionallydisplaysthemessage“Systemlearning”.
Note
Themessage“Processaborted”appearsifthesettingprocessisinterrupted.Allentriesmadeuptothispointarelost,andtheoriginalsettingsremainineffect.Onlyifthemessage“Process
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complete”appearsafterthesettingshavebeenmadewilltheTirePressureMonitoringre-learnthewheels.
Pleaseobservethechapter”SYSTEMLEARN-ING”onpage128.
Beforefittingtireswithsizeswhicharenotstoredintheon-boardcomputer,themissinginformationshouldbesupplementedintheon-boardcomputer.
PleaseconsultyourauthorizedPorschedealer.
UseonlytiresapprovedbyPorsche.
TheavailableitemsintheTirepressuremenudependontheequipmentofyourvehicle.Forthisreasonitispossiblethatsomeoftheitemsshownherearenotavailableonyouron-boardcomputer’sdisplay.Tirepressurewarnings
TheTirePressureMonitoringwarnsaboutlossinpressureintwostages,dependingontheamountofpressureloss:
Stage1-Addair(3to6psi(0.2to0.4bar)lossinpressure)
Stage2-Flattire(from6psi(0.4bar)lossinpressure)
Stage1-Addair
Thepressureinthetireistoolowby3to6psi(0.2to0.4bar).Drivingwithinsufficienttirepressurereducestheroadsafetyofthevehicleanddestroysthetireandwheel.
Thetirepressurewarningcontainstheaffectedtirewiththetirepressuretobeadded.Correctthetirepressureatthenextopportunity.
Thistirepressurewarningappearswithvehiclestoppedandcanbeacknowledged.Thetirepressurewarninglightintheinstrumentpanelgoesoutwhenthetirepressurehasbeencorrected.
Stage2-Flattire
Thepressureinthetirehasdroppedbymorethan6psi(0.4bar).Thissignificantpressurelossisadangertoroadsafety.
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Whenthetirepressurewarninghasappearedontheon-boardcomputer,stopimmediatelyatasuitablelocation.Checkthetireforsignsofdamage.Ifnecessary,fillintiresealantandsetthecorrecttirepressure.
Thistirepressurewarningappearswhendrivingandcanbeacknowledged.Thetirepressurewarninglightintheinstrumentpanelgoesoutwhenthetirepressurehasbeencorrected.
Systemlearning
TheTirePressureMonitoringbeginsto“learn”thewheelsafterawheelchange,wheeltransmitterreplacementorupdateofthetiresettings.During
thisprocess,theTirePressureMonitoringrecog-nizesthetiresandtheirlocations.Theon-boardcomputerdisplayesthemessage“TPCinactive-systemlearning”.
TheTirePressureMonitoringrequiresacertainamountoftimetolearnthewheels.Duringthistime,thecurrenttirepressuresarenotavailableontheon-board-computer:
–ThedisplayoftheTirepressurefunctionoftheon-boardcomputershowslines.
–Therequiredpressuresforcoldtiresat68°F(20°C)areindicatedintheInfopressuredisplayintheTirepressuremenu.
–Tirepressurewarningsareissuedwithouttirepressureandpositioninformation(gure)assoonasthevehicle’sownwheelshavebeendetectedandthetirepressurewarninglighthasgoneout.
PositionandpressureinformationisdisplayedassoonastheTirePressureMonitoringhasassignedthewheelsidentifiedasbelongingtothevehicletothecorrectwheelpositions.
Thewheellearningprocesstakesplaceexclusivelywhenthevehicleisbeingdriven.
Manuallycheckthetirepressureatallwheelsandcorrectthetirepressuretotherequiredvalue.
Changingawheelandreplacingtires
Newwheelsmustbefittedwithradiotransmit-tersfortheTirePressureMonitoring.Beforetiresarechanged,thebatterychargestateofthewheeltransmittersshouldbecheckedatanauthorizedPorschedealer.
Switchtheignitionoffwhenchangingawheel.
Thetiresettingsontheon-boardcomputermustbeupdatedafterchangingawheel.
Amessageappearsifthecharacteristicsofthenewtiresdonotagreewiththeon-boardcomputersettings.
Updatetheon-boardcomputersettingswhenthevehicleisstationarythenexttime.
Warninglight
Thewarninglightinthespeedometerlightsup:
–Whenalossinpressurehasbeendetected
–IftheTirePressureMonitoringisfaulty
–Whenlearningnewlymountedwheels/wheelsensors,aslongasthevehicle’sownwheelshavenotyetbeenrecognized.
Thetirepressurewarninglightintheinstrumentpanelgoesoutonlywhenthecauseofthefaulthasbeenrectified.
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Nomonitoring
IntheeventoffaultstheTirePressureMonitoringcannotmonitorthetirepressure.Thewarninglightontheinstrumentpanellightsupandacorrespondingmessageappearsontheon-boardcomputer.
Monitoringisnotactivewhen:
–theTirePressureMonitoringisfaulty,
–wheeltransmittersfortheTirePressureMonitoringaremissing,
–temporarilyafterchangingawheel(learningphase),
–morethanfourwheeltransmittersaredetect-ed,
–thereisexternalinterferencebyotherradiosources,e.g.wirelessheadphones,
–tiretemperaturesaretoohigh.
Pleaseobservethechapter”WARNINGSONTHEINSTRUMENTPANELANDTHEON-BOARDCOMPUTER”onpage138.
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