BMW 3 SERIES 2021 Owners Manual

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DrivingstabilitycontrolsystemsVehiclefeaturesandoptions
Thischapterdescribesallstandard,country-spe#jcificandoptionalfeaturesofferedwiththeseries. Italsodescribesfeaturesandfunctionsthatare
notnecessarilyavailableinyourvehicle,e.g.,due totheselectedoptionsorcountryversions.Thisalsoappliestosafety-relatedfunctionsandsys#j
tems.Whenusingthesefunctionsandsystems,
theapplicablelawsandregulationsmustbeob#j
served.
AntilockBrakingSystem ABS
ABSpreventslockingofthewheelsduringbrak#jing.
Thevehiclemaintainsitssteeringpowereven duringfullbrakeapplications,whichincreases
theactivesafety.
ABSisoperationaleverytimeyoustarttheen#j gine.
Brakeassistant
Whenyouapplythebrakesrapidly,thissystem
automaticallybooststhevehiclebrakingassis#j tancetothefurthestpossibleextent.Itreducesthebrakingdistancetoaminimumduringanemergencystop.ThissystemutilizesallofthecapabilitiesprovidedbytheAntilockBrakeSys#j
temABS.
Donotreducethepressureonthebrakepedal forthedurationoftheemergencystop.
Adaptivebrakeassistant
IncombinationwithActiveCruiseControlACC,
thissystemensuresthatthebrakesrespond
evenmorerapidlywhenbrakingincriticalsitua#j tions.
Drive-offassistant
Concept
Thissystemsupportsdrivingoffonuphillgrades.
Drivingoff
1.Holdthevehicleinplacewiththefootbrake.2.Releasethefootbrakeanddriveoffwithoutdelay.
Afterthefootbrakeisreleased,thevehicleis
heldinplaceforapprox.2seconds.
Dependingonthevehicleloading,thevehicle
mayrollbackslightly.
DSCDynamicStabilityControl
Concept
Withinthephysicallimits,thesystemhelpsto
keepthevehicleonasteadycoursebyreducing
drivepowerandbybrakingtheindividualwheels.
Generalinformation DSCdetectsthefollowingunstabledrivingcon#j
ditions,forinstance:
'xFishtailing,whichcanleadtooversteering.'xLossoftractionofthefrontwheels,which canleadtoundersteering.Seite211DrivingstabilitycontrolsystemsCONTROLS211
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Safetyinformation
Warning
Thesystemcannotserveasasubstituteforthe
driver#sspersonaljudgmentinassessingthe
trafficconditions.Basedonthelimitsofthe
system,itcannotindependentlyreacttoalltraf#j ficsituations.Thereisariskofaccident.Adjust
drivingstyletotrafficconditions.Watchtraffic
closelyandactivelyintervenewhereappropri#j
ate.
Warning
Whendrivingwitharoofload,forinstancewith
roof-mountedluggagerack,thevehicle'scen#j
terofgravityishigher,whichincreasestherisk ofthevehicletippingincriticaldrivingsitua#j
tions.Theremaybeariskofaccidentorriskof damagetoproperty.DonotdeactivateDSC
DynamicStabilityControlwhendrivingwith
roofload.
Overview
Buttoninthevehicle
DSCOFF
Deactivating/activatingDSC Generalinformation
WhenDSCisdeactivated,drivingstabilityisre#j ducedduringaccelerationandwhendrivingin
curves.
Toincreasevehiclestability,activateDSCagain assoonaspossible.
DeactivatingDSC HoldthebuttondownuntilDSCOFFisdisplayedintheinstrumentclusterand
theDSCOFFindicatorlightisilluminated.
ActivatingDSC Pressthebutton.
DSCOFFandtheDSCOFFindicator
lightgoout.
Display Intheinstrumentcluster
WhenDSCisdeactivated,DSCOFFisdisplayed intheinstrumentcluster.
Indicator/warninglights Theindicatorlightlightsup:DSCisde#j
activated.
Theindicatorlightflashes:DSCcontrols
thedriveandbrakingforces.
Theindicatorlightlightsup:DSChas
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DTCDynamicTractionControl
Concept
DTCisaversionoftheDSCDynamicStability
Controlwheredrivepowerisoptimized.
Thesystemensuresmaximumdrivepoweronunusualroadconditions,forinstanceunplowedsnowcoveredroads,orlooseroadsurfaces,but
withsomewhatlimiteddrivingstability.
Generalinformation WhenDTCisactivated,thevehiclehasmaxi#j
mumtraction.Drivingstabilityislimitedduring accelerationandwhendrivingincurves.
YoumayfinditusefultobrieflyactivateDTCinthefollowingsituations:
'xWhendrivinginslushoronuncleared,snow-coveredroads.'xWhendrivingofffromdeepsnoworlooseground.'xWhendrivingwithsnowchains.
Overview
Buttoninthevehicle
DSCOFF
Activating/deactivatingDTC
ActivatingDTC Pressthebutton.
TRACTIONisdisplayedintheinstru#j
mentclusterandtheindicatorlightforDSCOFF lightsup.
DeactivatingDTC Pressthebuttonagain.
TRACTIONandtheDSCOFFindicator
lightgoout.
Display Displayintheinstrumentcluster
IfDTCisactivated,TRACTIONisdisplayedin theinstrumentcluster.
Indicator/warninglights Theindicatorlightlightsup:DTCisacti#j
vated.
Automaticprogramchange
Incertainsituations,theDynamicStabilityCon#j trolDSCisactivatedautomatically:'xIfActiveCruiseControlwithStop&Gofunc#j
tionACCisactivated.'xOnabrakeinterventionbytheIntelligent
Safetysystems.'xThevehiclehasaflattire.
xDrive
Concept
xDriveistheall-wheel-drivesystemofthevehi#j cle.TheinteractionofxDriveandothersuspen#jsioncontrolsystems,suchasDSCDynamicSta#j
bilityControl,furtheroptimizestractionand
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drivingdynamics.xDrivevariablydistributesthe
drivingforcestothefrontandrearaxlesasde#j mandedbythedrivingsituationandroadsurface.
TheDrivingDynamicsControlisusedtochange
theall-wheeldistributionfromtractionoriented
tosportoriented.
Becauseoftheneeds-baseduseoftheall- wheel-drivesystem,Efficient4x4yieldsareduc#j
tioninconsumption.
Msportdifferential
TheactiveMdifferentialprovidesforcontinu#j
ouslyvariablelockingoftherearaxledifferential
dependingonthedrivingsituation.Thisprevents
spinningofasinglerearwheelandtherebypro#j
videsoptimaltractioninanydrivingsituation.
Thedriverisresponsibleadaptinghisorherdriv#j ingstyletothesituation.
Variablesportsteering
Thevariablesportsteeringfacilitatesadirectandagiledrivingstylewithlittlesteeringeffort.The
variablesportssteeringworksindependentlyof thecurrentspeed,varyingthesteeringratioin
linewiththesteeringangle.
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DriverassistancesystemsVehiclefeaturesandoptions
Thischapterdescribesallstandard,country-spe#jcificandoptionalfeaturesofferedwiththeseries. Italsodescribesfeaturesandfunctionsthatare
notnecessarilyavailableinyourvehicle,e.g.,due totheselectedoptionsorcountryversions.Thisalsoappliestosafety-relatedfunctionsandsys#j
tems.Whenusingthesefunctionsandsystems,
theapplicablelawsandregulationsmustbeob#j
served.
SpeedLimiter
Concept
Thesystemcanbeusedtosetaspeedlimit,for instancetopreventthevehiclefromexceeding
speedlimits.
Generalinformation Thesystemcanlimitthespeed,startingata
valueof20mph/30km/h.Thevehiclecanbe drivenatanyspeedbelowthesetspeedlimit.
OverviewButtonsonthesteeringwheel
ButtonFunctionSystemon/off.Storecurrentspeed.
SpeedLimitAssist:takeoversug#j
gestedspeedmanually.Rockerswitch:
Changingthespeedlimit.Operation
Switchingon Pressthebuttononthesteeringwheel.
Thecurrentspeedisacceptedasthespeed limit.
Ifthesystemisswitchedonwhilethevehicleis stationaryordrivingatlowspeeds,
20mph/30km/hissetasthespeedlimit.
Themarkinginthespeedometerissettothe
correspondingspeed.
Whenthespeedlimitisswitchedon,DSCDy#j
namicStabilityControlandCOMFORTdriving
modemaybeswitchedonaswell.
Switchingoff Pressthebuttononthesteeringwheel.
Thesystemswitchesoffautomaticallyinthefol#j
lowingsituations,forexample:'xWhentheengineisswitchedoff.'xWhencruisecontrolisswitchedon.'xWhencertainprogramsareactivatedviathe DrivingDynamicsControl.
Thedisplaysgoout.
Interrupting Ifthereversegearisengagedoratidle,thesys#jtemisinterruptedwhenrollingbackwards.
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Changingthespeedlimit
Presstherockerswitchupordownrepeatedlyuntilthedesiredspeedlimitisset.
'xEachtimetherockerswitchispressedtotheresistancepoint,thespeedlimitincreasesor
decreasesby1mph/1km/h.'xEachtimetherockerswitchispressedpast
theresistancepoint,thedesiredspeed
changesbyamaximumof5mph/10km/h.
Ifthesetspeedlimitisreachedorunintentionally
exceeded,suchaswhendrivingdownhill,theve#j
hicleisnotactivelybraked.
Whenthespeedlimitissetduringatriptoa
valuebelowthecurrentspeed,thevehicle
coastsuntilitdropstothesetspeedlimit.
Thecurrentspeedcanalsobestoredbypress#j ingabutton:
Pressthebuttononthesteeringwheel.
Exceedingthespeedlimit Whenthevehiclespeedexceedsthesetspeedlimit,awarningisissued.
Thespeedlimitcanbeexceededintentionally.
Thereisnowarninginthiscase.
Presstheacceleratorpedalallthewaydownto
intentionallyexceedthesetspeedlimit.
Whenthevehiclespeeddropsbelowtheset
speedlimit,thelimitisautomaticallyreactivated.
Warningwhenthespeedlimitis
exceeded
Visualwarning Ifthespeedlimitisexceeded:theindica#j
torlightintheinstrumentclusterflashes
whilethevehiclespeedisgreaterthan
thesetspeedlimit.
Acousticwarning'xIfthespeedlimitisexceededunintentionally,
asignalsounds.'xWhenthespeedlimitisreducedtobelowthe
vehiclespeedwhiledriving,thesignalsounds
aftersometime.'xWhenthespeedlimitisintentionallyex#j ceededbysteppingontheacceleratorpedalallthewaydown,thereisnosignal.
Displaysintheinstrument
cluster
Displayinthespeedometer
'xGreenmarking:systemisac#j
tive.'xGreymarking:systemisinter#j
rupted.'xNomarking:systemis
switchedoff.
Indicatorlight
'xTheindicatorlightlightsup:thesys#j
temisswitchedon.'xTheindicatorlightflashes:theset
speedlimithasbeenexceeded.'xGrayindicatorlight:thesystemhasbeenin#j terrupted.Seite216CONTROLSDriverassistancesystems216
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Cruisecontrol
Concept
Usingthissystem,adesiredspeedcanbead#j justedusingthebuttonsonthesteeringwheel. Thesystemmaintainsthedesiredspeed.The
systemacceleratesandbrakesautomaticallyas
needed.
GeneralinformationThesystemcanbeactivatedstartingat20mph/30km/h.
Dependingonthevehiclesetting,thecruise
controlsettingsmaychangeundercertaincondi#j
tions.Forinstance,accelerationcanchangede#j
pendingonthedrivingmode.
Safetyinformation
Warning
Thesystemcannotserveasasubstituteforthe
driver#sspersonaljudgmentinassessingthe
trafficconditions.Basedonthelimitsofthe
system,itcannotindependentlyreacttoalltraf#j
ficsituations.Thereisariskofaccident.Adjust
drivingstyletotrafficconditions.Watchtraffic
closelyandactivelyintervenewhereappropri#j
ate.
Warning
Theuseofthesystemcanleadtoanincreased riskofaccidentsinthefollowingsituations,
forinstance:
'xOnwindingroads.'xInheavytraffic.'xOnslipperyroads,infog,snow,orwet
conditions,oronalooseroadsurface.
Theremaybeariskofaccidentorriskofdam#j agetoproperty.Onlyusethesystemifdriving
atconstantspeedispossible.
Warning
Thedesiredspeedcanbeincorrectlyadjusted
orcalledupbymistake.Thereisariskofacci#j
dent.Adjustthedesiredspeedtothetraffic
conditions.Watchtrafficcloselyandactivelyin#j
tervenewhereappropriate.
Overview
Buttonsonthesteeringwheel
ButtonFunctionCruisecontrolon/off.Continuecruisecontrolwiththelast
setting.Pausecruisecontrol.Storecurrentspeed.
SpeedLimitAssist:takeoversug#j
gestedspeedmanually.Rockerswitch:
Setspeed.
Switchingcruisecontrolon/off
Switchingon Dependingontheequipmentversion,presstherelevantbuttononthesteer#j
ingwheel.
Theindicatorlightsintheinstrumentclusterlight upandthemarkingonthespeedometerissetto
thecurrentspeed.
Cruisecontrolisactive.Thecurrentspeedis
maintainedandstoredasdesiredspeed.
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DSCDynamicStabilityControlisswitchedon,if
necessary.
Switchingoff Dependingontheequipmentversion,
presstherelevantbuttononthesteer#j
ingwheel.
Thedisplaysgoout.Thestoreddesiredspeedis deleted.
Pausingcruisecontrol
Interruptingmanually Whenactive,pressthebutton.
Interruptingautomatically
Thesystemisautomaticallyinterruptedinthe
followingsituations,forexample:'xWhenthedriverappliesthebrakes.'xSteptronictransmission:whenselectorlever
positionDisdisengaged.'xDynamicTractionControlDTCisactivatedor
DSCDynamicStabilityControlisdeactivated.'xIfDSCDynamicStabilityControlintervenes.
Settingthespeed
Maintainingandstoringthespeed
Presstherockerswitchupordownoncewhilethesystemisinterrupted.
Whenthesystemisswitchedon,thecurrent
speedismaintainedandstoredasthedesired speed.
Thestoredspeedisdisplayedonthespeedom#j
eter.
DSCDynamicStabilityControlisswitchedon,if
necessary.
Thespeedcanalsobestoredbypressingabut#j ton.
Pressthebutton.
Changingthespeed
Presstherockerswitchupordownrepeatedly untilthedesiredspeedisset.
Ifactive,thedisplayedspeedisstoredandthe
vehiclereachesthestoredspeedwhentheroad isclear.
'xEachtimetherockerswitchispressedtotheresistancepoint,thedesiredspeedincreases
ordecreasesby1mph/1km/h.'xEachtimetherockerswitchispressedpast
theresistancepoint,thedesiredspeed
changesbyamaximumof5mph/10km/h.
Themaximumspeedthatcanbesetde#j
pendsonthevehicle.'xPressingtherockerswitchtotheresistance
pointandholdingit:vehicleacceleratesor decelerateswithoutpressureontheacceler#j
atorpedal.
Aftertherockerswitchisreleased,thevehi#j clemaintainsitsfinalspeed.Pressingthe
switchbeyondtheresistancepointcauses
thevehicletoacceleratemorerapidly.Seite218CONTROLSDriverassistancesystems218
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Continuingcruisecontrol
Aninterruptedcruisecontrolcanbecontinued
bycallingupthestoredspeed.
Makesurethatthedifferencebetweencurrent
speedandstoredspeedisnottoolargebefore callingupthestoredspeed.Otherwise,uninten#jtionalbrakingoracceleratingmayoccur.
Pressthebuttonwiththesysteminter#j
rupted.
Cruisecontroliscontinuedwiththestoredval#j ues.
Inthefollowingcases,thestoredspeedvalueis deletedandcannotbecalledupagain:'xWhenthesystemisswitchedoff.'xWhendrive-readystateisswitchedoff.
Displaysintheinstrument
cluster
Displayinthespeedometer
'xGreenmarking:systemisac#j
tive,themarkingindicatesthe
desiredspeed.'xGreymarking:systemisinter#j
rupted,themarkingindicates
thestoredspeed.'xNomarking:systemisswitchedoff.
Indicatorlight
'xIndicatorlightgreen:systemisactive.'xGrayindicatorlight:thesystemhas
beeninterrupted.'xNoindicatorlight:systemisswitchedoff.
DisplaysintheHead-upDisplay
SomesysteminformationcanalsobedisplayedintheHead-upDisplay.
Thesymbolisdisplayedwhenthesetdesiredspeedisreached.
Systemlimits
Thedesiredspeedisalsomaintaineddownhill.Thespeedmaynotbemaintainedonuphillgradesifthedrivepowerisinsufficient.
InECOPROdrivemode,thevehiclemayexceed
ordropbelowthesetdesiredspeedinsomesit#j
uations,forinstanceondownhilloruphillgrades.
ActiveCruiseControlwith Stop&GofunctionACC
Concept
Usingthissystem,adesiredspeedandadis#j
tancetoavehicleaheadcanbeadjustedusing
thebuttonsonthesteeringwheel.
Thesystemmaintainsthedesiredspeedon
clearroads.Thevehicleacceleratesorbrakes automatically.
Ifavehicleisdrivingaheadofyou,thesystem adjuststhespeedofyourvehiclesothattheset
distancetothevehicleaheadismaintained.The
speedisadjustedasfarasthegivensituational#j
lows.
Generalinformation Dependingonthevehiclesetting,thecruise
controlsettingsmaychangeundercertaincondi#j
tions.Forinstance,accelerationcanchangede#j
pendingonthedrivingmode.
Thedistancecanbeadjustedinseveralsteps.
Forsafetyreasons,itdependsontherespective
speed.
Ifthevehicleaheadofyoubrakestoahalt,and thenproceedstodriveagainwithinabriefperiod,
thesystemisabletodetectthiswithinthegiven
systemlimits.
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Safetyinformation
Warning
Thesystemcannotserveasasubstituteforthe
driver#sspersonaljudgmentinassessingthe
trafficconditions.Basedonthelimitsofthe
system,itcannotindependentlyreacttoalltraf#j ficsituations.Thereisariskofaccident.Adjust
drivingstyletotrafficconditions.Watchtraffic
closelyandactivelyintervenewhereappropri#j
ate.
Warning
Anunsecuredvehiclecanbegintomoveand
possiblyrollaway.Thereisariskofaccident.
Beforeexiting,securethevehicleagainstroll#j
ing.
Inordertoensurethatthevehicleissecured againstrollingaway,followthefollowing:
'xSettheparkingbrake.'xOnuphillgradesoronadownhillslope,
turnthefrontwheelsinthedirectionofthe
curb.'xOnuphillgradesoronadownhillslope, alsosecurethevehicle,forinstancewithawheelchock.
Warning
Thedesiredspeedcanbeincorrectlyadjusted
orcalledupbymistake.Thereisariskofacci#j
dent.Adjustthedesiredspeedtothetraffic conditions.Watchtrafficcloselyandactivelyin#j
tervenewhereappropriate.
Warning
Riskofaccidentduetotoohighspeeddifferen#j
cestoothervehicles,forinstanceinthefollow#j
ingsituations:
'xWhenfastapproachingaslowlymoving vehicle.'xVehiclesuddenlyswervingintoownlane.'xWhenfastapproachingstandingvehicles.
Thereisariskofinjuriesordangertolife.
Watchtrafficcloselyandactivelyintervene
whereappropriate.
Overview Buttonsonthesteeringwheel
ButtonFunctionWithsteeringandtrafficjamassistant:Cruisecontrolon/off.Withsteeringandtrafficjamassistant:Selectfunction.Withoutsteeringandtrafficjamassis#j
tant:
Cruisecontrolon/off.Storecurrentspeed.
SpeedLimitAssist:takeoversug#j
gestedspeedmanually.Withsteeringandtrafficjamassistant:
Pausecruisecontrol.
Continuecruisecontrolwiththelast
setting.Withoutsteeringandtrafficjamassis#j
tant:
Continuecruisecontrolwiththelast
setting.Withoutsteeringandtrafficjamassis#j
tant:
Pausecruisecontrol.Increasethedistance.
Switchdistancecontrolon/off.Seite220CONTROLSDriverassistancesystems220
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