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.
Controls,Instruments125
CarAudioOperation/Tips
Generalinformation
Forradiooperationseeyourradiomanualwhichisincludedwithyouron-boardlitera-ture.
Pleaseobservethechapter”LOADSWITCH-OFFAFTER2HOURSOR7DAYS”onpage265.
FMreception
Avehicleisnotanidealplacetolistentoaradio.Becausethevehiclemoves,receptionconditionsareconstantlychanging.Buildings,terrain,signaldistanceandnoisefromothervehiclesareallworkingagainstgoodreception.SomeconditionsaffectingFMmayappeartobeproblemswhentheyarenot.
Thefollowingcharacteristicsarecompletelynormalforagivenreceptionarea,andtheydonotindicateanyproblemwiththeradioitself.
Note
ElectronicaccessoriesshouldonlybeinstalledbyyourauthorizedPorschedealer.EquipmentwhichhasnotbeentestedandapprovedbyPorschemayimpairradiofunctionandreception.
Fadinganddrifting
FMrangeislimitedtoabout25miles(40km),exceptforsomehighpowerstations.
Ifavehicleismovingawayfromthedesiredstation’stransmitter,thesignalwilltendtofadeand/ordrift.ThisconditionismoreprevalentwithFMthanAM,andisoftenaccompaniedbydistortion.Fadinganddriftingcanbeminimizedtoacertaindegreebycarefulattentiontofinetuningorselectionofastrongersignal.
Staticanduttering
Whentheline-of-sightlinkbetweenatransmitterandvehicleisblockedbylargebuildingsormoun-tains,theradiosoundmaybeaccompaniedwithstaticorflutteringbecauseofthecharacteristicofFM.Inasimilareffect,aflutteringnoiseissome-timesheardwhendrivingalongatree-linedroad.
Thisstaticandflutteringcanbereducedbyadjust-ingthetonecontrolforgreaterbassresponseuntilthedisturbancehaspassed.
Multipath
BecauseofthereflectingcharacteristicsofFM,directandreflectedsignalsmayreachtheantennaatthesametime(multipath)andcanceleachotherout.Asavehiclemovesthroughtheseelectronicdeadspots,thelistenermayhearamomentaryflutterorlossofreception.
Stationswapping
WhentwoFMstationsareclosetoeachother,andanelectronicdeadspot,suchasstaticormultipatharea,interruptstheoriginalsignal,sometimesthestrongersecondsignalwillbeselectedautomaticallyuntiltheoriginalonereturns.Thisswappingcanalsooccurasyoudriveawayfromtheselectedstationandapproachanotherstationofastrongersignal.
178Controls,Instruments
