traction control VOLVO XC90 2006 Owners Manual

46 InstrumentsandcontrolsIndicatorandwarningsymbolsParkingbrakeapplied
Thelampcomesonwhenthe
parkingbrakeisdepressed.Always
depresstheparkingbraketothe
bottomposition.
NOTE!Thelampcomesonirrespectiveof
howhardtheparkingbrakeisdepressed.
Rearfoglamp
Thislamplightswhenthefoglamp
ison.
Trailerindicatorlamp
Flasheswhenthedirection
indicatorsofthecarandtrailerare
used.Ifthelampdoesnotflash,one
ofthedirectionindicatorsonthetrailerorcar
isdefective.
StabilitysystemandDSTCTheDSTCsystemcontainsseveraldifferent
functionsthataredescribedinmoredetailon
page124.
Thesymbollightsandgoesoutagain
afterapprox.twoseconds
Thesymbolislitforasystemcheck
whenthecarisstarted.Thesymbolflashes
TheSCfunctionactstopreventthe
car’sdrivewheelsfromspinning.
TheTCfunctionactstoimprovethe
car’straction.
TheAYCfunctionactstopreventskidding.
TheRSCfunctionactstoprevent
overturning.
Thewarningsymbolshineswitha
steadyamberglow
TRACTIONCONTROL
TEMPORARILYOFFisshownon
theinformationdisplaytogether
withthesymbol.
TheTCfunctionhasbeentemporarily
suppressedbecausethebraketemperature
istoohigh.
Automaticreactivationofthefunctiontakes
placewhenthebraketemperaturehas
returnedtonormal.
Thewarningsymbolshineswitha
steadyamberglow
ANTI-SKIDSERVICEREQUIREDis
shownontheinformationdisplay
togetherwiththesymbol.
TheDSTCsystemhasbeenswitchedoff
becauseofafault.
–Stopthecarinasafeplaceandturnoff
theengine.–Restarttheengine.
Ifthewarningsymbolremainslit,drivetoan
authorisedVolvoworkshoptohavethe
systemchecked.
FaultinDSTCsystem
Ifthewarningsymbollightsandshineswitha
constantgloweventhoughyoudidnot
switchoffthesystem,itindicatesafaultin
oneofthesystems.Thetext"ANTI-SKID
SERVICEREQUIRED"isshowninthe
display.
–Stopthecarinasafeplaceandswitchoff
theengine.Restarttheengine.
Ifthewarningsymbolgoesout,thefault
wastemporaryanditisnotnecessaryto
visitaworkshop.
Ifthewarningsymbolremainslit,driveto
anauthorisedVolvoworkshoptohavethe
systemchecked.
WARNING!
Undernormaldrivingconditions,the
DSTCsystemimprovesthecar’sroad
safety,butthisshouldnotbetakenasa
reasontoincreasespeed.Alwaysfollow
theusualprecautionsforsafecornering
anddrivingonslipperysurfaces.
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121 Startinganddriving
All-wheeldriveAll-wheeldrive–AWDAll-wheeldriveisalwaysengaged.
All-wheeldrivemeansthatallfourroad
wheelsaredrivenatthesametime.Poweris
automaticallydistributedbetweenfrontand
rearwheels.Anelectronicallycontrolled
clutchsystemdistributesthepowertothe
pairofwheelsthatgripsbest.Thisprovides
thebesttractionandpreventswheelspin.
Undernormaldrivingconditions,themajority
ofpoweristransmittedtothefrontwheels.
All-wheeldriveimprovesdrivingsafetyinrain,
snowandicyconditions.
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124 StartinganddrivingStabilitysystemWhenthestabilitysystemisinaction,itmay
seemlikethecardoesnotrespondnormally
toacceleration.Thisisbecausethesystem
detectstheamountoffrictionontheroad
surfaceandallowsthedifferentstability
systemfunctionstooperate.
ThecariseitherequippedwithSTC(Stability
andTractionControl)-Stabilityandtraction
controlsystemorDSTC(DynamicStability
andTractionControl)-Dynamicstabilityand
tractioncontrolsystem.
TractionControl–(TC)
TheTractionControlfunctiontransfers
powerfromthespinningdrivewheeltothe
drivewheelwhichhasgripbybrakingthe
spinningdrivewheel.Toincreaseforward
tractioninthissituation,itmaybenecessary
todepresstheacceleratormorethanusual.A
pulsingsoundisheardwhenTractionControl
isworking.Thisiscompletelynormal.TheTC
functionismostactiveatlowspeeds.It
cannotbedeactivated.SpinControl(SC)
TheStabilityControlfunctionpreventsthe
drivewheelsfromslippingduringacceler-
ation.Thisimprovesroadsafetyonslippery
surfaces.Undercertainconditions,suchas
whendrivingwithsnowchainsorindeep
snoworsand,itmaybebeneficialto
deactivatetheSCfunctiontoincrease
traction.ThisisdonewiththeSTC/DSTC
button.
ActiveYawControl(AYC)
TheActiveYawControlfunctionautomati-
callybrakesoneormorewheelstostabilise
thecarintheeventofaskid.Ifthebrake
pedalweretobedepressedinthissituation,
itwouldfeelmorerigidthanusualanda
pulsingsoundwouldbeheard.
TheAYCfunctionisalwaysactiveandcannot
bedeactivated. Function/
systemSTCDSTC
1
1.Optiononcertainmarkets.TCXX
SCXX
AYCX
WARNING!
SuppressingtheSTCorDSTCsystem
mayalterthedrivingcharacteristicsofthe
car.Alwaystakecarewhencorneringand
drivinginslipperyconditions.
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252 AlphabeticalindexSwitch,telephone.......................................225TTachometer......................................................43
Tailgate,opening............................................60
Telephonefunctions...................................224
Telephonesystem,overview.....................223
Temperaturegauge.......................................43
Temporaryspare..........................................152
Timer.................................................................70
Towbar...........................................................132
Towing...........................................................127
Towingeye....................................................128
TP,trafficinformation.................................211
Tractioncontrol............................................124
Trailer.............................................................130
Trailerweight................................................237
Tripcomputer..................................................56
Tripodometer..................................................43
Tuning............................................................208
Tyrepressures,recommended.................151
Tyres
designationofdimensions.................148
drivingcharacteristics..........................148
speedratings.........................................148
treadwearindicators...........................149UUnlocking......................................................103
VVanitymirror..................................................189
Vehicledata..................................................170
Viscosity.........................................................240
Volumecontrol.............................................204
Volumecontrol,programmetypes...........205
Volumereduction,telephonecall.............225
VolvoCarCorporationand
theenvironment.................................................3WWading..........................................................112
Warningdialogueboxes.................................2
"Warning!"texts................................................2
Warningtriangle...........................................152
Washerfluid..................................................176
Washingthecar...........................................164
Waxingandpolishing.................................165
Weights..........................................................237
Wheels
directionofrotation..............................150
fitting........................................................156
removal....................................................154
Whiplashinjury...............................................22
Whiplashprotection......................................22
WHIPS.............................................................22
Windscreenwasher......................................55
Windscreenwipers.......................................54
Wintertyres...................................................149
Wiperblades................................................178
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