steering wheel AUDI S4 2019 Service Manual

8W0012721BG
Multifunctionsteeringwheel

conference™.Bypressingtheleftcontrolbutton,
youcanmakeadditionalcallsfromthedirectory
orthecalllist.Resumeconference*takesallpar-
ticipantsoffhold.
@Tips
— Thephonefunctionscanonlybecontrolled
withthemultifunctionsteeringwheelifthe
phoneequipmentwasinstalledatthefac-
tory.
— Thetelephonefunctionsdependonthecell
phoneandwhethertheyaresupportedby
yourcellphoneserviceproviderornot.
— TheCallwaiting*functionmustbeactivat-
edinyourcellphoneandintheMMIinor-
dertobealerted whenthereisanincoming
callduringanactivecall.Thecalloptions
dependonthecellphoneandservicepro-
vider.Youcanobtainmoreinformationfrom
yourcellphoneserviceprovider.
Navigation
Co)YeeeCLy1)
Appliesto:vehicleswithmultifunctionsteeringwheeland
navigationsystem
Requirement:adestinationmustbe entered
=page198andtherouteguidancemustbe
started.

>Pressthe[<>]buttononthemultifunction
steeringwheelrepeatedlyuntiltheNavigation
tabisdisplayed.
>Presstheleftcontrolbutton>page16.

Dependingonvehicleequipment,thefollowing
functions
maybeavailableinthedriverinforma-
tionsystem.
—Displayingnavigationduringactiveroute
guidance:selectandconfirmMap*/Street
view*orArrowview”.
— Showingthemapwhenrouteguidanceisnot
active*:selectandconfirmMap”.
—Accessinglastdestinations:selectandconfirm
Lastdestinations>thedesireddestination.
—Accessingfavorites*:selectandconfirmFavor-
ites>thedesireddestination.
—Startingrouteguidancetothestoredhome
address:selectandconfirmCancelrouteguid-
anceifnecessaryandthenHomeaddress.
Ifyouhavenotstartedanyrouteguidance,a
compass(analoginstrumentcluster)orthear-
rowview(monochromeinstrumentcluster)is
displayeddependingontheequipment.Themap
isdisplayedintheAudivirtualcockpit*.
Cancelingactiverouteguidance
—Select:rightcontrolbutton>Cancelroute
guidance
Additionalsettings
—Select:rightcontrolbutton>desiredentry.
Depending onthefunctionselected,thefollow-
ingadditional settingsmaybepossible:
—Mapdisplay>page209.
—Mapcolors>page209.
—Maporientation>page209.
—Automaticzoom>page210.
Navigationviewwithrouteguidance
tad)
Appliesto:vehicleswithnavigationsystem andAudivirtual
cockpit

Fig.166Standardmapwhenrouteguidanceisactive(Audi
virtualcockpit)
Requirement:adestinationmustbeentered
=>page198,routeguidancemustbestartedand
thenavigationtabmustbedisplayed.
Depending onthevehicleequipmentandthese-
lectedview>page17,thefollowinginformation
willbedisplayedinthedriverinformationsys-
tem:
@Mapcontent(suchaspointsofinterest)
@Currentvehicleposition
159

Multifunctionsteeringwheel

@Abargraphappearswhenthereisanupcom-
ingturn.Thefewerthebarsthatareshown,the
shorterthedistanceisuntiltheturn.Ifthereis
not anupcomingturn,thedistancetothedesti-
nation/stopoverandthecalculatedarrivaltimeis
displayedintherightspeedometer.
@Nameofthestreetwhereyouarecurrently
driving
Mapviewwithrouteguidancestarted
Appliesto:vehicleswithnavigationsystemandmapview
Dependingonthevehicleequipment,youcanal-
sohavetheactiverouteguidancedisplayinthe
mapview*inthedriverinformationsystem.
eeele
Fig.167Diagram:mapwhenrouteguidancehasstarted
(analoginstrumentcluster)

Requirement:adestinationmustbeentered
=>page198,routeguidancemustbestartedand
thenavigationtabmustbedisplayed.
Dependingonvehicleequipment,thefollowing
informationmaybeshowninthedriverinforma-
tionsystem.
@Distancetothedestinationorstopover
@Distancetothenextmaneuver
@Display oftheroadthatiscurrentlybeingtrav-
eled ortheroad thatyouwillturnontoduring
thenextmaneuver
@Mapcontentsuchas pointsofinterestortraf-
ficinformation
Zoomingin/outonthemap(Zoom):whena
mapisdisplayed,turntheleftthumbwheel
down/uptozoomin/outonthemap.
Streetviewwithrouteguidancestarted
Appliesto:vehicleswithnavigationsystemandstreetview
Dependingonthevehicleequipment,theactiverouteguidancewillbedisplayedinthestreetview*in
thedriverinformationsystem.



uN

Fig.168Example:displayofaturninthestreetview(analoginstrumentcluster)
160

8W0012721BG
Multifunctionsteeringwheel

Requirement:adestinationmustbeentered
=>page198,routeguidancemustbestartedand
thenavigationtabmustbedisplayed.
Dependingonvehicleequipment,thefollowing
informationmaybeshowninthedriverinforma-
tionsystem>fig.168:
Distancetothedestinationorstopover
©oDisplayinganexpressway,highwayormain
roadaspreparationforanupcomingchange
indirection
Lanerecommendation
Calculatedarrivaltime
Distancetothenextmaneuver
Display oftheexpressway,highwayormain
roadontowhichyouwillbeturning
Directionarrowfortheupcomingmaneuver
©
O80
Abargraphappearswhenadirectionarrowis
displayed.Thefewerthebars thatareshown,
theshorterthedistanceisuntiltheturn.
Currentvehicleposition©
Additionalinformation(on-boardcomputer)
Thefollowingfunctionsarealsoavailablewhen
routeguidanceisactive:
—Adjustingthevoiceguidancevolume:turnthe
rightthumbwheelupordownwhileavoice
guidancemessageisplaying.

ZA\WARNING
Theroutecalculatedby thenavigationsystem
isarecommendationforreachingyourdesti-
nation.Obeytrafficlights,stoppingrestric-
tions,one-waystreets,lanechangerestric-
tions,etc.
(i)Tips
—Alsoseethechapter>page8,Cockpitover-
view.
— Anexclamationpoint“!”infront ofthe
streetnameindicatesthattheinformation
aboutthisstreetorthissectionoftheroute
isnotcompleteinthenavigationdatacon-
tainedintheMMI.Obeytrafficlawsinone-
waystreetsandpedestrianzones.

TAUAmelhmeereeitanle)
Appliesto:vehicleswithnavigationsystemandarrowview
Dependingonthevehicleequipment,theactiverouteguidancewillbedisplayedinthearrowview*in
thedriverinformationsystem.

om:



Fig.169Example:arrowview(monochromeinstrumentcluster)
Requirement:adestinationmustbeentered
=page198,routeguidancemustbestartedand
thenavigationtabmustbedisplayed.
Dependingonvehicleequipment,thefollowing
informationmaybeshowninthedriverinforma-
tionsystem>fig.169:
@Distancetothedestinationorstopover
161

Multifunctionsteeringwheel

Distancetothenextmaneuver
Directionarrowfortheupcomingmaneuver
Abargraphappearswhen adirectionarrowis
displayed.Thefewerthebars thatareshown,
theshorterthedistanceisuntiltheturn.
®O®
Lanerecommendation
Additionalinformation(on-boardcomputer)
Calculatedarrivaltime
©0G®@Displayofthestreetcurrentlybeingdriven
onIfapointisdisplayedbeforethestreet,it
isindicatingthestreetyouwillbe onwiththe
nextmaneuver.
Thefollowingfunctionsarealsoavailablewhen
routeguidanceisactive:
—Adjustingthevoiceguidancevolume:turnthe
rightthumbwheelupordownwhileavoice
guidancemessageisplaying.

ZXWARNING
Theroutecalculatedby thenavigationsystem
isarecommendationforreachingyourdesti-
nation.Obeytrafficlights,stoppingrestric-
tions,one-waystreets,lanechangerestric-
tions,etc.
@Tips
—Alsosee thechapter>page8,Cockpitover-
view.
—Anexclamationpoint“!”infront ofthe
streetnameindicatesthattheinformation
aboutthisstreetorthissectionoftheroute
isnotcompleteinthenavigationdatacon-
tainedintheMMI.Obeytrafficlawsinone-
waystreetsandpedestrianzones.

162

Voicerecognitionsystem

Voicerecognitionsystem
Operating
Appliesto:vehicleswithvoicerecognitionsystem
YoucanoperatemanyInfotainmentfunctions
convenientlybyspeaking.
Requirement:theignitionandtheMMImustbe
switched
on>page145.Asystemlanguagesup-
portedbythevoicerecognitionsystemmustbe
set.Theremustbenophonecallsinprogressand
theparkingaidmustnotbeactive.

>Switchingon:pressthe[%]button@
=>page17,fig.11or>page18,fig.13briefly
onthemultifunctionsteeringwheelandsay
thedesiredcommandaftertheBeep.
>Switchingoff:pressandholdthe|™]button.
Or:pressthe|5|button.
>Pausing:saythecommandPause.Toresume,
pressthe|]button.
>Correcting:saythecommandCorrection.Or:
simplysayanewcommandduringanan-
nouncement>page241.






Inputassistance
Thesystemguidesyouthroughtheinputwith
visualandaudiofeedback.
—Visualinputassistance:afterswitchingon
voicerecognition,adisplaywithaselectionof
possiblecommandsappears.Thiscommand
displaycanbe switchedonoroff.Select:
MENU]button>Settings>leftcontrolbutton
>MMIsettings>Speechdialogsystem.
—Audioinputassistance: tohavethepossible
commandsread,turnthevoicerecognitionsys-
temonandsayHelp.


Forthesystemtounderstandyou:
Speakclearlyanddistinctly atanormalvolume.
Speaklouderwhendrivingfaster.
Emphasizethewordsinthecommandsevenly
anddonotleavelongpauses.
Closethedoors,thewindows,andthesunroof*
toreducebackgroundnoise.Makesurethatpas-
sengersarenotspeakingwhenyouaregivinga
voicecommand.
164
Donotdirecttheventstowardthehands-freemi-
crophone,whichisintheroofheadlinernearthe
frontinteriorlights.
Onlyusethesystemfromthedriver'sseatbe-
causethehands-freemicrophoneisdirectedto-
wardthatseat.
Additionalsettings
See>page241,Speechdialogsystem.

ZAWARNING
—Directyourfullattentiontodriving.Asthe
driver,youhavecompleteresponsibilityfor
safetyintraffic.Onlyusethefunctionsin
suchawaythatyoualwaysmaintaincom-
pletecontroloveryourvehicleinalltraffic
situations.
—Donotuse thevoicerecognitionsystemin
emergenciesbecauseyourvoicemaychange
instressfulsituations.Thesystemmaytake
longertodialthenumberormaynotbe
abletodialitatall.Dialtheemergency
numbermanually.

Gi)Tips
— Thedialogpauseswhenthereisanincom-
ingphonecallandwillcontinueifyouig-
norethecall.Thedialogendsifyouanswer
thecall.
—Youcanselectan iteminthelistusingei-
therthevoicerecognitionsystemorthe
controlknob.
Commandoverview
information
Appliesto:vehicleswithvoicerecognitionsystem
Thefollowingoverviewsdescribethecommands
thatcan beusedtooperatetheMMIusingthe
voicerecognitionsystem.
Alternativecommandsareseparatedusinga“/”,
forexamplesay:Telephone/(or)Navigation/
(or)Radio.
Sequencesofcommandsusedtoperformanac-
tionareidentifiedwitha “>”,forexamplesay:
Enteraddress>(then)Entercountry/state.>

Voicerecognitionsystem

TheparkingaidaswellastheAudivoicerecogni-
tionsystemmustnotbeactive.
AmobiledevicemustbeconnectedtotheMMI
withtheHandsfreeprofile>page171.
Themobiledevicebeingconnectedmusthave
voicecontrolthatcanbecontrolledexternally.

>Switchingon:pressandholdthe||buttonon
themultifunctionsteeringwheel* andsaythe
desiredcommandaftertheexternalspeechdia-
logbegins.
>Continuing/resumingthedialog:thesystem
remainsreadytouseforashorttimeafterend-
ingthedialog.Youcanstartanewexternaldia-
logduringthistime. Pressthe[2]buttonif
needed,andsayanewcommand.Or:select
andconfirmResumeontheMMIcontrolpanel.
>Switchingoff:pressandholdthe|™]button.
Or:selectandconfirmCancelontheMMIcon-
trolpanel.
G)Tips
—Therearenovoiceguidance”promptswhen
adialogisactive.
—Thisfunctiondependsonthecellphone
used.Youcanobtainmoreinformationfrom
yourmobiledeviceserviceproviderorfrom
yourmobiledeviceuserguide.
—AUDIAGsimplyprovidesaccesstocontrol
yourmobiledevicewithvoiceoperationand
doesnotassumeanyresponsibilityforthe
contentandcommandswithintheexternal
voicecontrol.




170

Navigation

>Pressthe

NAV/MAP. buttonrepeatedlyuntil
themapisdisplayed>fig.190.
Zoomingin/outonthemap
—Turn thecontrolknobtotheleftor totheright.
Alternatively,youcanalsozoomin/outonthe
mapusingtheMMItouchcontrolpad*
=>page150,ifthecrosshairsareswitchedon.
Or:
turntheleftthumbwheelonthemultifunc-
tionsteeringwheel*>page16.
Turningthecrosshairson/off
—Switchingthecrosshairson:pressthecontrol
knobinthemapview>fig.190.
—Switchingthecrosshairsoff:pressthe[BACK
button.


Whenthecrosshairsareswitchedoff>fig.190:
@Direction.Foradditionalinformation,see
knob.Whenthecrosshairsareturnedoff,the
roadbeingcurrentlydrivenonisshown.
@Speedlimit display”):displayofthemaxi-
mumpermittedspeedontheexpressways
andhighways.
@Entertainmentslidingmenu*:see
=>page150.
@®Additionalinformationonthecrosshairspo-
sition:ifyoumovethecrosshairstoa loca-
tiononthemap,availableinformationfor
thecurrentpositionisdisplayed.Tapbriefly
ontheMMItouchcontrolpad.Or:pressthe
controlknob.Inthedestinationdetails,you
canstartrouteguidancetothedisplayedlo-
cation.SelectandconfirmStartrouteguid-
ance.
@Mapcontents(pointsofinterest,favorites).
Whentherearemultiplepointsofinterestin
=>page209.
@Thedistancetothedestinationincludesthe
calculatedarrivaltime.
@Whenthetrailermodefunctionisswitched
on,thecorrespondingsymbolisdisplayed
nexttothearrivaltime.
@Scale:turnthecontrolknobtotheleftor
righttodecreaseor increasethescale.When
theAutomaticzoomfunctionisswitchedon
&,an“A”for“Automatic”isdisplayedinthe
magnifyingglass.
Altitude
Vehiclelocation
Routeinformation:variousinformationwill
bedisplayedduringactiverouteguidance
(forexample,theupcomingmaneuverin-
cludingcalculateddistanceandstreet
names).Thedisplayalsoprovidestrafficin-
formationorpointsofinterestonthecurrent
route.
Roadcurrentlybeingdrivenon
CO®
Whenthecrosshairsareswitchedon>fig.191:
@)Thecrosshairs:movethecrosshairsinthede-
sireddirectionandsetapointonthemapus-
ingtheMMItouchcontrolpad”orthecontrol

D_Onlyappliestovehicleswithoutcamera-basedspeedlimit
display.
208
theimmediatevicinity,thesymbolsare
shownstackedonthemap.
@®)Betterroute#9 ifabetterrouteisavailable
forthecurrentrouteguidance,itwillbeindi-
catedonthemapincludingthetimethat
wouldbesaved.Moreinformationcanbe
foundunder>page213.
Mapfunctions
Appliesto:vehicleswithnavigationsystem
>Pressthe

NAV/MAP buttonrepeatedlyuntil
themapisdisplayed>page207,fig.190.
>Presstheleftcontrolbutton.
Thefollowingmapfunctionscan beselected:
Switchtodestinationinput
ThefreetextsearchintheEnterdestination
menuisdisplayed>page198,fig.183.
Trafficmessages
CurrenttrafficinformationisdisplayedintheIn-
fotainmentsystemdisplay.Youcanalsofindad-
ditionalinformationunder>page212.

Drivingsafety

>Observealltrafficlaws,rulesoftheroadand
speedlimitsandplaincommonsense.
>ALWAYSadjustyourspeedtoroad,trafficand
weatherconditions.
>Take frequentbreaksonlongtrips.Donotdrive
formorethantwohoursatastretch.
>DoNOTdrivewhenyouaretired,underpres-
sureor whenyouarestressed.

ZXWARNING
Impaireddrivingsafetyincreasestheriskof
seriouspersonalinjuryanddeathwhenevera
vehicleisbeingused.


Correctpassenger
seatingpositions
Properseatingpositionforthedriver
Theproperdriverseatingpositionisimportant
forsafe,relaxeddriving.

B4G-0375



Fig.214Correctseatingposition
Foryourownsafetyandtoreducetheriskofin-
juryinthe eventofanaccident,werecommend
thatyouadjustthedriver'sseattothefollowing
position:
>Adjustthedriver'sseat so thatyoucaneasily
pushthepedalsallthewaytothefloorwhile
keepingyourknee(s)slightlybent>/\.
>Adjusttheangleoftheseatbacksothatitisin
anuprightpositionsothatyour backcomesin
fullcontactwithitwhenyoudrive.
>Adjustthesteeringwheelsothatthereisadis-
tanceofatleast10inches(25cm)betweenthe
steeringwheelandyourbreastbone>fig.214.
Ifnotpossible,seeyourauthorizedAudidealer
aboutadaptiveequipment.
248
>Adjust thesteeringwheelso thatthesteering
wheelandairbagcoverpointsatyourchestand
notatyourface.
>Graspthetopofthesteeringwheelwithyour
elbow(s)slightlybent.
>Appliesto:adjustableheadrestraints:Adjust
the
headrestraintsotheupperedgeisaseven
as possiblewiththetopofyourhead.Ifthatis
notpossible,trytoadjusttheheadrestraintso
thatitisasclosetothispositionaspossible.
>Fastenandwearsafetybeltscorrectly
=>page256.
>»Alwayskeepbothfeetinthefootwell so that
youareincontrolofthevehicleatalltimes.
Fordetailedinformationonhowtoadjustthe
driver'sseat,see>page58.

ZAWARNING
Driverswhoareunbelted,outofpositionor
tooclose totheairbagcanbeseriouslyinjured
by anairbagasitunfolds.To helpreduce the
riskofseriouspersonalinjury:
—Alwaysadjustthedriver'sseatandthe
steeringwheelsothatthereareatleast
10inches(25cm)betweenyour breastbone
andthesteeringwheel.
—Alwaysadjustthedriver'sseatandthe
steeringwheelsothatthereareatleast
4inches(10cm)betweenthekneesandthe
lowerpartoftheinstrumentpanel.
—Alwaysholdthesteeringwheelontheout-
sideofthesteeringwheelrimwithyour
handsatthe9o'clockand3o'clockposi-
tionstohelpreducetheriskofpersonalin-
juryifthedriver'sairbaginflates.
—Neverholdthesteeringwheelatthe
12o'clockpositionorwithyourhandsat
otherpositionsinsidethesteeringwheel
rimoronthesteeringwheelhub.Holding
the
steeringwheelthewrongwaycancause
seriousinjuriestothehands,armsandhead
ifthedriver'sairbagdeploys.
—Pointingthesteeringwheeltowardyour
facedecreasestheabilityofthesupplemen-
taldriver'sairbagtoprotectyouinacolli-
sion.

Safetybelts

Whyusesafetybelts?
eeeeeeemweeeNey
Frontalcrashescreateverystrongforcesforpeo-
pleridinginvehicles.

B4H-0465






B4H-0466



Fig.218Thevehiclecrashesintothewall
Thephysicalprinciplesaresimple.Boththevehi-
cleandthepassengerspossessenergywhichvar-
ieswithvehiclespeedandbodyweight.Engi-
neerscallthisenergy“kineticenergy.”
Thehigherthespeedofthevehicleandthe
greaterthevehicle'sweight,themoreenergy
thathastobe“absorbed”inthecrash.
Vehiclespeedisthemostsignificantfactor.Ifthe
speeddoublesfrom15to30mph(25to50
km/h),theenergyincreases4times!
Becausethepassengersofthisvehiclearenotus-
ing
safetybelts>fig.217,theywillkeepmoving
atthesamespeedthevehiclewasmovingjust
before thecrash,untilsomethingstopsthem-
here,thewall>fig.218.
Thesameprinciplesapplytopeoplesittingina
vehiclethatisinvolvedinafrontalcollision.Even
atcityspeedsof20to30mph(30to50km/h),
theforcesactingonthebodycanreachoneton
254
(2,000lbs.or1,000kg)ormore.Atgreater
speeds,theseforcesareevenhigher.
Peoplewhodonotusesafetybeltsarealsonot
attachedtotheirvehicle.Inafrontalcollision
theywillalsokeepmovingforwardatthespeed
theirvehiclewastravellingjustbeforethecrash.
Ofcourse,thelawsofphysicsdon'tjustapplyto
frontalcollisions,theydeterminewhathappens
inallkindsofaccidentsandcollisions.
Whathappenstooccupantsnotwearing
aainte
Incrashesunbeltedoccupantscannotstop
themselvesfromflyingforwardandbeingin-
juredorkilled.Alwayswearyoursafetybelts!


Fig.219Adrivernotwearingasafetybeltisviolently
thrownforward

Fig.220Arearpassengernotwearingasafetybeltwillfly
forwardandstrikethedriver
Unbeltedoccupantsarenotabletoresistthetre-
mendousforcesofimpactbyholdingtightor
bracingthemselves.Withoutthebenefitofsafe-
tyrestraintsystems,theunrestrainedoccupant
willslamviolentlyintothesteeringwheel,in-
strumentpanel,windshield,orwhateverelseis
intheway>fig.219.Thisimpactwiththevehi-
cleinteriorhasalltheenergytheyhadjustbefore
the
crash.>

8W0012721BG
Airbagsystem

Airbagsystem
Importantinformation
alleleMolMICUraLTT}
sittingproperly
Airbagsareonlysupplementalrestraints.For
airbagstodotheirjob,occupantsmustalways
properlyweartheirsafetybeltsandbeina prop-
erseatingposition.
Foryoursafetyandthesafety ofyourpassen-
gers,beforedrivingoff,always:
>Adjustthedriver'sseatandsteeringwheel
properly>page248,
>Adjustthefrontpassenger'sseatproperly
=>page249,
>Wearsafetybeltsproperly>page255,
>Alwaysproperlyuse theproperchildrestraint
toprotectchildren>page285.
Inacollision,airbagsmustinflatewithinthe
blinkofaneyeandwithconsiderableforce.The
supplementalairbagscancauseinjuriesifthe
driverorthefrontseatpassengerisnotseated
properly.Thereforeinordertohelptheairbagto
doitsjob,itisimportant,bothasadriverandas
apassengertositproperlyatalltimes.
Bykeepingroombetweenyourbodyandthe
steeringwheelandthefrontofthepassenger
compartment,theairbagcaninflatefullyand
completelyandprovidesupplementalprotection
incertainfrontalcollisions>page248,Correct
passengerseatingpositions.Fordetailsonthe
operationoftheseatadjustmentcontrols
=>page58.
It'sespeciallyimportantthatchildrenareproper-
lyrestrained>page285.
Thereisalotthatthedriverandthepassengers
canandmustdotohelptheindividualsafetyfea-
turesinstalledinyourAudiworktogetherasa
system.
Properseatingpositionisimportantso thatthe
frontairbagonthedriver sidecandoitsjob.If
youhaveaphysicalimpairmentorconditionthat
preventsyoufromsittingproperlyonthedriver
seatwiththesafetybeltproperlyfastenedand
reachingthepedals,orifyouhave concernswith
regardtothefunctionoroperationoftheAd-
vancedAirbagSystem,pleasecontactyourau-
thorizedAudidealerorqualifiedworkshop,or
callAudi CustomerRelationsat1-800-822-2834
forpossiblemodificationstoyourvehicle.
Whentheairbagsystemdeploys,agas generator
willfilltheairbags,breakopenthepaddedcov-
ers,andinflatebetweenthesteeringwheeland
thedriverandbetweentheinstrumentpaneland
thefrontpassenger.Theairbagswilldeflateim-
mediatelyafterdeploymentsothatthefrontoc-
cupantscan seethroughthewindshieldagain
withoutinterruption.
Allofthistakesplaceintheblinkofaneye,so
fastthatmanypeopledon'tevenrealizethatthe
airbagshavedeployed.Theairbagsalsoinflate
withagreatdeal offorceandnothingshould be
intheirwaywhentheydeploy.Frontairbagsin
combinationwithproperlywornsafetybeltsslow
downandlimittheoccupant'sforwardmove-
ment.Togethertheyhelptopreventthedriver
andfrontseatpassengerfromhittingparts of
theinsideofthevehiclewhilereducingtheforces
actingontheoccupantduringthecrash.Inthis
waytheyhelptoreducetheriskofinjurytothe
headandupperbodyinthecrash.Airbagsdonot
protectthearmsorthelowerpartsofthebody.
Bothfrontairbagswillnotinflateinallfrontal
collisions.Thetriggeringoftheairbagsystemde-
pendsonthevehicledecelerationratecausedby
thecollisionandregisteredbytheelectroniccon-
trolunit.Ifthisrateisbelowthereferencevalue
programmedintothecontrolunit,theairbags
willnot betriggered,eventhoughthecarmaybe
badlydamagedasaresultofthecollision.Vehi-
cledamage,repaircostsoreventhelackofvehi-
cledamageisnotnecessarilyanindicationof
whetheranairbagshouldinflateornot.
Sincethecircumstanceswillvary considerably
betweenonecollisionandanother,itisnotpossi-
bletodefinearangeofvehiclespeedsthatwill
cover everypossiblekindandangleofimpact
thatwillalwaystriggertheairbags.Important
factorsinclude,forexample,thenature(hardor
soft)oftheobjectwhichthecarhits,theangleof
impact,vehiclespeed,etc.Thefrontairbagswill>
261