AUDI S4 2019 Owners Manual

8W0012721BG
Airbagsystem

theseatmaypreventtheAdvancedAirbagSys-
temforthefrontpassengerseatfromdoingits
jobinacrash.
ThefrontAdvancedAirbagSystemconsists
ofthefollowing:
—Crashsensorsinthefrontofthevehiclethat
measurevehicleacceleration/decelerationto
provideinformationtotheAdvancedAirbag
Systemabouttheseverityofthecrash.
— Anelectroniccontrolunit,withintegrated
crashsensorsforfrontandsideimpacts.The
controlunit“decides”whethertofirethefront
airbagsbasedontheinformationreceivedfrom
thecrashsensors.Thecontrolunitalso“de-
cides”whetherthesafetybeltpretensioners
shouldbeactivated.
— AnAdvancedAirbagwithgasgeneratorand
controlvalveforthedriver insidethesteering
wheelhub.
— AnAdvancedAirbagwithgasgeneratorand
controlvalveinsidetheinstrumentpanelfor
thefrontpassenger.
—Acapacitivepassengerdetectionsystemunder-
neaththefrontpassengerseatcover.Thissys-
temmeasurestheelectricalcapacitanceofthe
personintheseat.Theinformationregistered
issent continuouslytotheelectroniccontrol
unit toregulatedeploymentofthefrontAd-
vancedAirbagonthepassengerside.
— Anairbagmonitoringsystemandindicator
lightkaintheinstrumentcluster.
—Asensorineachfrontseatregistersthedis-
tancebetweentherespectiveseatandthe
steeringwheelorinstrumentpanel.Theinfor-
mationregisteredissent continuouslytothe
electroniccontrolunittoregulatedeployment
ofthefrontAdvancedAirbags.
—ThePASSENGERAIRBAGOFF#;ON@light
comesonintheheadliner>page273,fig.230
andtellsyouthestatusoftheAdvancedAirbag
onthepassengerside.
—Asensorinthesafetybeltlatchforthedriver
andforthefrontseatpassengerthatsenses
whetherthatsafetybeltislatchedornotand
transmitsthisinformationtotheelectronic
controlunit.


ZAWARNING
Damagetothefrontpassengerseatcanpre-
ventthefrontairbagfromworkingproperly.
—Improperrepairordisassemblyofthefront
passengeranddriverseatwillpreventthe
AdvancedAirbagSystemfromfunctioning
properly.
—Repairstothefrontpassengerseatmustbe
performedbyqualifiedandproperlytrained
workshoppersonnel.
—Neverremovethefrontpassengerordriver
seatfromthevehicle.
—Neverremovetheupholsteryfromthefront
PassengerSeat.
—Neverdisassembleorremovepartsfromthe
seatordisconnectwiresfromit.
—Nevercarrysharpobjectsinyourpocketsor
putthemontheseat.Thecapacitivepassen-
gerdetectionmatinthefrontpassenger
seatwillnotfunctionproperlyifitispunc-
tured.
—Nevercarrythingsonyourlaporcarryob-
jectsonthefrontpassengerseat.Suchob-
jectscaninfluencethecapacitanceregis-
teredbythecapacitivepassengerdetection
system,sothatincorrectinformationispro-
videdtotheairbagcontrolunit.
—Neverstoreitemsunderthefrontpassenger
seat.PartsoftheAdvancedAirbagSystem
underthepassengerseatcouldbedam-
aged,preventingthemandtheairbagsys-
temfromworkingproperly.
—Neverplaceseatcoversorreplacementup-
holsterythathavenotbeenspecificallyap-
proved by Audionthefrontseats.
—SeatcoverscanpreventtheAdvancedAirbag
Systemfromrecognizingchildrestraintsor
occupantsonthefrontpassengerseatand
preventthesideairbagintheseat backrest
fromdeployingproperly.
—Ifaseatheaterhasbeenretrofittedor oth-
erwiseaddedtothefrontpassengerseat,
neverinstallanychildrestraintsystemon
thisseat.
—Neverusecushions,pillows,blankets,or
similaritemsonthefrontpassengerseat.
Theadditionallayerspreventthecapacitive

269

Airbagsystem


passengerdetectionsystemfromaccurately
measuringthecapacitanceofthechildsafe-
tyseatand/orthepersonontheseatand
thuskeeptheAdvancedAirbagSystemfrom
cushioncanhavethesameeffect.Ifthe
frontpassengerfrontalairbagisturnedon,
thePASSENGERAIRBAGOFF#;lightwill
turnoff.

workingproperly.
—Neverplaceoruseanyelectricaldevice
(suchasalaptop,CDplayer,electronic
gamesdevice,powerinverterorseatheater
forchildseats)onthefrontpassengerseat
ifthedeviceisconnectedtothe12-volt
socketorthecigarettelightersocket.Such
devicescaninfluencethecapacitanceregis-
teredby thecapacitivepassengerdetection
system,so thatincorrectinformationispro-
videdtotheairbagcontrolunit.
—Ifyoumustusea childrestraintonthefront
passengerseatandthechildrestraintman-
ufacturer'sinstructionsrequirethe useofa
towel,foamcushionorsomethingelseto
properlypositionthechildrestraint,make
certainthatthePASSENGERAIRBAGOFF
¥;lightcomesonandstaysonwhenever
thechildrestraintisinstalledonthefront
Passengerseat.
—IfthePASSENGERAIRBAGOFF7%;light
doesnotcomeonandstayon,immediately
installchildrestraintinarearseatingposi-
tionandhavetheairbagsysteminspected
byyourAudidealer.
HowtheAdvancedAirbagSystem
componentsworktogether
ThefrontAdvancedAirbagSystemandtheside
airbagssupplementtheprotectionofferedbythe
frontthree-pointsafetybeltsandtheadjustable
headrestraintstohelpreducetheriskofinjuryin
awiderangeofaccidentandcrashsituations.Be
suretoreadtheimportantinformationabout
safetyandheedtheWARNINGSinthischapter.
DeploymentoftheAdvancedAirbagSystemand
theactivationofthesafetybeltpretensionersde-
pendonthedecelerationmeasuredbythecrash
sensorsandregisteredbytheelectroniccontrol
unit.Crashseveritydependsonspeedanddecel-
erationaswellasthemassandstiffnessofthe
vehicleorobjectinvolvedinthecrash.
Onthepassengerside,regardlessof safetybelt
use,thefrontpassengerfrontalairbagwillbe
turnedoffiftheelectricalcapacitancemeasured
bythecapacitivepassengerdetectionsystemon
thefrontpassengerseatislessthantheamount
programmedintheelectroniccontrolunit.The
frontpassengerfrontalairbagwillalsobeturned

AWARNINGoffifthecapacitancemeasuredby thesystemfor
~thefrontpassengerseatequalsthat ofaninfant
Ifthefrontpassengerseatgetswet,dryitim-ofaboutoneyearofagein oneofthechildseats
mediately.thatwasusedtocertifytheAdvancedAirbagSys-
temunderFederalMotorVehicleSafetyStandard
208.ThePASSENGERAIRBAGOFF#;light
comesonandstaysontotellyouwhenthefront
AdvancedAirbagSystemonthepassengerside
hasbeenturnedoff>page273.
—Ifliquidsoaksintothefrontpassengerseat,
thiscankeeptheairbagsystemfromwork-
ingproperlyandmay,forinstance,deacti-
vatethepassengerfrontalairbag.Ifthis
happens,thePASSENGERAIRBAGOFF#¥,
lightwillcomeonandstayontogetherwith
theairbagindicatorlightkaintheinstru-
mentcluster.
—Ifliquidispooledontheseat,but hasnot
soakedin,thismayalsokeeptheairbagsys-
temfromworkingproperlyandcausethe
passengerfrontalairbagtobeenabled
(turnedon),eventhoughthereisaproperly
installedchildrestraintsystemontheseat.
Wettowelsorotherwetthingsontheseat

Z\WARNING
To reducetheriskofinjurywhenanairbagin-
flates,alwayswearsafetybeltsproperly.
—Ifyouareunrestrained,leaningforward,sit-
tingsidewaysoroutofpositioninanyway,
yourriskofinjuryismuchhigher.
—Youwillalsoreceiveseriousinjuriesand
couldevenbekilledifyouareupagainstthe|>


270

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Airbagsystem


airbagortooclosetoitwhenitinflates-
evenwithanAdvancedAirbag>page261.

TMLeeMoMdahaiamcelta
airbags

B4L-1300


Fig.229Inflatedfrontairbags
Safetybeltsareimportanttohelpkeepfrontseat
occupantsintheproperseatedpositionsothat
airbagscanunfoldproperlyandprovidesupple-
mentalprotectioninafrontalcollision.
Thefrontairbagsaredesignedtoprovideaddi-
tionalprotectionforthechestandfaceofthe
driverandthefrontseatpassengerwhen:
—safetybeltsarewornproperly
—theseatshavebeenpositionedsothattheoc-
cupantisproperlyseatedasfaraspossible
fromtheairbag
—andtheheadrestraintshavebeenproperlyad-
justed
Becauseairbagsinflateintheblinkofaneyewith
greatforce,thingsyouhaveonyourlaporhave
placedontheseatcouldbecomedangerouspro-
jectiles,andbepushedintoyouiftheairbagin-
flates.
Whenanairbagdeploys,finedustisreleased.
Thisisnormalandisnotcausedbyafireinthe
vehicle.Thisdustismadeupmostlyofapowder
usedtolubricatetheairbagsastheydeploy.It
couldirritateskin.
Itisimportanttorememberthatwhilethesup-
plementalairbagsystemisdesignedtoreduce
thelikelihoodof seriousinjuries,otherinjuries,
forexampleswelling,bruisingand minorabra-
sions,canalsohappenwhenairbagsinflate.Air-
bags donotprotectthearmsorthelowerparts
ofthebody.Frontairbagssupplementthethree-
pointsafetybeltsonlyinsomefrontalcollisions
inwhichthevehicledecelerationishighenough
todeploytheairbags.
Frontairbagswillnotdeploy:
—iftheignitionisswitchedoffwhenacrashoc-
curs
—insidecollisions
—inrear-endcollisions
—inrollovers
—whenthecrashdecelerationmeasuredbythe
airbagsystemislessthantheminimumthresh-
old neededforairbagdeploymentasregistered
bytheelectroniccontrolunit
Thefrontpassengerairbagalsowillnot
deploy:
—whenthefrontpassengerseatisnotoccupied,
—whentheelectricalcapacitancemeasuredby
thecapacitivepassengerdetectionsystemfor
thefrontpassengerseatindicatesthatthepas-
sengersidefrontalairbagmustbeswitchedoff
bytheelectroniccontrolunit(thePASSENGER
AIRBAGOFF%;light>page273comeson
andstayson).

ZAWARNING
Sittinginthewrongpositioncanincreasethe
riskofseriousinjuryincrashes.
—Toreducetheriskofinjurywhentheairbags
inflate,thedriverandpassengersmustal-
wayssitinanuprightposition,mustnot
leanagainstorplaceanypart oftheirbody
tooclosetotheareawheretheairbagsare
located.
—Occupantswhoareunbelted,outofposition
ortooclosetotheairbagcanbeseriouslyin-
juredby anairbagasitunfoldswithgreat
forceintheblinkofaneye>page262.

Z\WARNING
Achildinarearward-facingchildsafetyseat
installedonthefrontpassengerseatwillbe
seriouslyinjuredandcanbekilledifthefront
airbaginflates-evenwithanAdvancedAirbag
System.

271

Airbagsystem


—Theinflatingairbagwillhitthechildsafety
seatorinfantcarrierwithgreatforceand
willsmashthechildsafetyseatandchild
againstthebackrest,centerarmrest,door
orroof.
—Alwaysinstallrear-facingchildsafetyseats
ontherearseat.
—Ifyoumustinstallarearward-facingchild
safetyseatonthefrontpassengerseatbe-
causeofexceptionalcircumstancesandthe
PASSENGERAIRBAGOFF%;lightdoesnot
comeonandstayon,immediatelyinstall
therear-facingchildsafetyseatinarear
seatingpositionandhavetheairbagsystem
inspectedbyyourauthorizedAudidealer.


ZAWARNING
Objectsbetweenyouandtheairbagwillin-
creasetheriskofinjuryinacrashbyinterfer-
ingwiththewaytheairbagunfoldsorbybe-
ingpushedintoyouastheairbaginflates.
—Neverhold thingsinyourhandsoronyour
lapwhenthevehicleisinuse.
—Nevertransportitemsonorintheareaof
thefrontpassengerseat.Objectscould
moveintotheareaofthefrontairbagsdur-
ingbrakingorothersudden maneuversand
becomedangerousprojectilesthatcan
causeseriouspersonalinjuryiftheairbags
inflate.
—Neverplaceorattachaccessoriesorother
objects(suchascupholders,telephone
brackets,large,heavyorbulkyobjects)on
thedoors,overornear theareamarked
“AIRBAG”onthesteeringwheel,instrument
panel,seatbackrestsorbetweenthose
areasandyourself.Theseobjectscould
causeinjuryinacrash,especiallywhenthe
airbagsinflate.
—Neverreclinethefrontpassenger'sseatto
transportobjects.Itemscanalsomoveinto
theareaofthesideairbagorthefrontair-
bagduringbrakingorinasuddenmaneuver.
Objectsnear theairbagscanbecomeprojec-
tilesandcauseinjury,particularlywhenthe
seatisreclined.
—Neverplaceortransportobjectsonthefront
passengerseat.Objectsonthefrontpassen-

gerseatcouldcausethecapacitivesensorin
theseattosignaltoairbagsystemthatthe
seatisoccupiedbyapersonwhenitinfactis
not,orthatthepersonontheseatisheavier
thanheorsheactuallyis.The changein
electriccapacitancebecauseofsuchobjects
cancausethepassengerfrontairbagtobe
turnedonwhenitshould beoff,orcan
causetheairbagtoworkinawaythatisdif-
ferentfromthewayitwouldhaveworked
withoutobjectsontheseat.
—Alwaysmakesurethatthereisnothingon
thefrontpassengerseatthatwillcausethe
capacitivepassengerdetectionsystemin
theseattosignaltotheAirbagSystemthat
theseatisoccupiedbyapersonwhenitis
not,ortosignalthatit isoccupiedbysome-
onewhoisheavierthanthepersonactually
sittingontheseat.Thepresenceofanob-
jectcouldcausethepassengerfrontairbag
tobeturnedonwhenitshouldbeoff,or
couldcausetheairbagtoworkinawaythat
isdifferentfromthewayitwouldhave
workedwithouttheobjectontheseat.


Z\WARNING
Thefinedustcreatedwhenairbagsdeploycan
causebreathingproblemsforpeoplewitha
historyofasthmaorotherbreathingcondi-
tions.
—Toreducetheriskofbreathingproblems,
thosewithasthmaorotherrespiratorycon-
ditionsshouldgetfreshairrightawayby
gettingoutofthevehicleoropeningwin-
dowsordoors.
—Ifyouareinacollisioninwhichairbagsde-
ploy,washyourhandsandfacewithmild
soapandwaterbeforeeating.
—Becarefulnottogetthedustintoyoureyes,
orintoanycuts orscratches.
—Iftheresidueshould getintoyoureyes,
flushthemwithwater.


272

8W0012721BG
Airbagsystem

Monitoringthe
AdvancedAirbagSystem

‘oringindicatorlight
Twoseparateindicatorsmonitorthefunctionof
theAdvancedAirbagSystem:the2]lightand
thePASSENGERAIRBAGOFF#;ON@light.
TheAdvancedAirbagSystemaswellastheside
airbagsandsidecurtainairbagswithejection
mitigationfeatures(includingtheelectroniccon-
trolunit,sensorsandsystemwiring)areall
monitoredcontinuouslytomakesurethatthey
arefunctioningproperlywhenevertheignitionis
on.Everytimeyouturnontheignition,theair-
bagsystemindicatorlightkawillcomeon fora
fewseconds(functioncheck).
The systemmustbeinspectedwhenthe
indicatorlightBa:
—doesnotcomeonwhentheignitionisswitched
on
—doesnotgooutafewsecondsafteryouhave
switched
ontheignition,or
— comesonwhiledriving
Ifanairbagsystemmalfunctionisdetected,the
indicatorlightwillcomeontoserveasaconstant
remindertohavethesysteminspectedimmedi-
ately.
If amalfunctionoccurs thatturnsthefrontair-
bagonthepassengersideoff,thePASSENGER
AIRBAGOFF%;lightwillcomeonandstayon
whenevertheignitionison.

Z\WARNING
Anairbagsystemthatisnotfunctioningprop-
erlycannotprovidesupplementalprotection
inafrontalcrash.
-Iftheairbagindicatorlight>page23
comeswhenthevehicleisbeingused,have
thesysteminspectedimmediatelybyyour
authorizedAudidealer.Itispossiblethat
theairbagwillinflatewhenitisnotsup-
posedto,orwillnotinflatewhenitshould.

PASSENGERAIRBAGOFF2%;ON@light

Fig.230Sectionfromtheheadliner:PASSENGERAIRBAG
OFF2%,ON@light
ThePASSENGERAIRBAGOFF#¥;ON@lightis
locatedintheheadliner>fig.230.
ThePASSENGERAIRBAGOFF3;lightwillcome
onandstayontotellyouwhenthefrontAd-
vancedAirbagonthepassengersidehasbeen
turnedoffbytheelectroniccontrolunit.Ifthe
bulbforthePASSENGERAIRBAGOFF3¥;ON@
lightburnsout,theairbagindicatorlightkawill
comeontosignalamalfunctionintheAdvanced
AirbagSystem.Althoughtheburned-outbulb
willnotchangethewaythefrontpassenger's
frontalairbagworks,itwillnolongerbepossible
touse thePASSENGERAIRBAGOFF#7;ON®
lighttomakesurethattheairbagon/offstatusis
correctfortheoccupantonthefrontpassenger
seat.Havetheairbagsysteminspectedimmedi-
atelybyyourauthorizedAudidealer.
ThePASSENGERAIRBAGOFF3;ON@light
willblinkforabout5secondswhen:
—thecapacitivepassengerdetectionsystem,
whichswitchesthefrontseatpassenger'sfron-
talAdvancedAirbagonandoff,detectsa
changeinthestatusofthefrontpassenger
seat.
AssoonasthePASSENGERAIRBAGOFF#¥;ON
®lightstopsblinking,alwaysmakesurethatthe
airbag status(onoroff)asshownbythelightis
properfortheage,sizeandelectricalcapacitance
ofthepersonoccupyingthefrontpassengerseat.
Alwaysmakesurethatthesafetybeltforthe
frontpassengerseatisproperlyfastened.
ThePASSENGERAIRBAGOFF3;/PASSENGER
AIRBAGON@lightwillshowthestatusofthe>
273

Airbagsystem

frontseatpassenger'sfrontalAdvancedAirbag.
ThePASSENGERAIRBAGOFF%;light:
—willcomeonifthefrontpassengerseatisnot
occupied;
—willcomeoniftheelectricalcapacitancemeas-
uredby thecapacitivepassengerdetectionsys-
temforthefrontpassengerseatequalsthe
combinedcapacitanceofaninfantuptoabout
oneyearofageandoneoftherearward-facing
orforward-facingchildrestraintslistedinFed-
eralMotorVehicleSafetyStandard208with
whichtheAdvancedAirbagSysteminyourvehi-
cle wascertified;Foralistingofthechildre-
straintsthatwereusedtocertifyyourvehicle's
compliancewiththeU.S.SafetyStandard
=>page287.
—willgooutifthefrontpassengerseatisoccu-
piedbyanadultasregisteredbythecapacitive
passengerdetectionsystem.
—ThePASSENGERAIRBAGOFF#¥;lightmust
comeonandstayoniftheignitionisonand...
—a-carbedhasbeeninstalledonthefront pas-
sengerseat,or
—arearward-facingchildrestrainthasbeenin-
stalledonthefrontpassengerseat,or
—aforward-facingchildrestrainthasbeeninstal-
ledonthefrontpassengerseat,
—andiftheelectricalcapacitanceregisteredon
thefrontpassengerseatisequaltoorlessthan
thecombinedcapacitanceofatypical1year-
old infantandoneoftherearward-facingor
forward-facingchildrestraintslistedinFederal
MotorVehicleSafetyStandard208withwhich
theAdvancedAirbagSysteminyourvehiclewas
certified.
Ifthefrontpassengerseatisnotoccupied,the
frontairbagwillnotdeploy,andthePASSENGER
AIRBAGOFF3;lightwillstayon.
Neverinstallarearward-facingchildrestrainton
thefrontpassengerseat,thesafest placefora
child
inanykind ofchildrestraintisatoneofthe
seatingpositionsontherearseat>page262,
Childrestraintsonthefrontseat-someimpor-
tantthingstoknowand>page285,Childsafe-
ty.
274
IfthePASSENGERAIRBAGOFF3;light
comeson...
IfthePASSENGERAIRBAGOFF#;lightcomes
onwhenoneoftheconditionslistedaboveis
met, besuretocheckthelightregularlytomake
certainthatthePASSENGERAIRBAGOFF3;
lightstaysoncontinuouslywhenevertheignition
ison.IfthePASSENGERAIRBAGOFF%;light
doesnotappearonanddoesnotstayonallthe
time,stopassoonasitissafe todosoand
—reactivatethesystembyturningtheignitionoff
formorethan4secondsandthenturningiton
again;
—removeandreinstallthechildrestraint.Make
surethatthechildrestraintisproperlyinstalled
andthatthesafetybeltforthefrontpassenger
seathasbeencorrectlyroutedthroughthe
childrestraintasdescribedinthechildrestraint
manufacturer'sinstructions;
—makesurethattheconvertiblelockingretractor
onthesafetybeltforthefrontpassengerseat
hasbeenactivatedandthatthesafetybelthas
beenpulledtight.
—makesurethatnoelectricaldevice(suchasa
laptop,CDplayer,electronicgamesdevice,
powerinverterorseatheaterforchildseats)is
placedorusedonthefrontpassengerseatif
thedeviceisconnectedtothe12-voltsocketor
thecigarettelightersocket;
—makesurethatnoseatheater hasbeenretrofit-
tedorotherwiseaddedtothefrontpassenger
seat;
—makesurethatnothingcaninterferewiththe
safetybeltbucklesandthattheyarenotob-
structed;
—makesurethattherearenowetobjects(such
asawettowel)andnowaterorotherliquidson
thefrontpassengerseatcushion.
IfthePASSENGERAIRBAGOFF&,lightstill
doesnotcomeon...
IfthePASSENGERAIRBAGOFF3%;lightstill
doesnotcomeonanddoesnotstayoncontinu-
ously(whentheignitionisswitchedon),
—takethechildrestraintoffthefrontpassenger
seatandinstallitproperlyatoneoftherear>

8W0012721BG
Airbagsystem

seatpositions.Havetheairbagsysteminspect-
ed byyourAudidealerimmediately.
—movethechildtoarearseatpositionandmake
sure thatthechildisproperlyrestrainedina
childrestraintthatisappropriateforitssize
andage.
ThePASSENGERAIRBAGOFF3;light
shouldNOTcomeon...
ThePASSENGERAIRBAGOFF3%;lightshould
NOTcomeonwhentheignitionisonandanadult
issittinginaproperseatingpositiononthefront
passengerseat.IfthePASSENGERAIRBAGOFF
¥;lightcomesonandstaysonwhiledriving,un-
derthesecircumstances,makesurethat:
—theadultonthefrontpassengerseatisproper-
lyseatedonthecenteroftheseatcushionwith
hisorherbackupagainstthebackrestandthe
backrestisnotreclined,
—theadultisnottakingweightofftheseatby
holdingontothepassengerassisthandle
abovethefrontpassengerdoororsupporting
theirweightonthearmrest,
—thesafetybeltisbeingproperlywornandthat
thereisnotalotofslackinthesafetybeltweb-
bing,
—therearenoaftermarketseatcoversorcush-
ionsorotherthings(such as blankets)onthe
frontpassengerseatthatmightcausetheca-
pacitivepassengerdetectionsystemto miscal-
culate
electricalcapacitance.
Macatawa)
monitoringtheAdvancedAirbagSystem
ZAWARNING
—IfthestatusoftheAdvancedAirbagSystem
haschangedwhilethevehicleismoving,the
PASSENGERAIRBAGOFF%;ON®light
blinksforabout5secondstocatchthedriv-
er'sattention.Ifthishappens,alwaysstop
assoonasitissafe todosoandcheckthe
stepsdescribedabove.
—IfthePASSENGERAIRBAGOFF%;light
doesnotgooffwhenanadultwhoisnot
verysmallissittingonthefrontpassenger

makesuretheadultisproperlyseatedand
restrainedatoneoftherearseatingposi-
tions.Havetheairbagsysteminspectedby
yourauthorizedAudidealerbeforetrans-
portinganyoneonthefrontpassengerseat.


ZAWARNING
Anairbagsystemthatisnotfunctioningprop-
erlycannotprovidesupplementalprotection
inafrontalcrash.
—Iftheairbagindicatorlight>page23
comeswhenthevehicleisbeingused,have
thesysteminspectedimmediatelybyyour
authorizedAudidealer.Itispossiblethat
theairbagwillinflatewhenitisnotsup-
posedto,orwillnotinflatewhenitshould.



seataftertakingthestepsdescribedabove,
ZA\WARNING
Ifthefrontairbaginflates,a childwithouta
childrestraint,orinarearward-facingchild
safetyseat,orinaforward-facingchildre-
straintthathasnotbeenproperlyinstalled
willbeseriouslyinjuredandcanbekilled.
—Eventhoughyourvehicleisequippedwith
anAdvancedAirbagSystem,makecertain
thatallchildren,especially12yearsand
younger,alwaysrideonthebackseatprop-
erlyrestrainedfortheirageandsize.
—Alwaysinstallforwardorrear-facingchild
safetyseatsontherearseat-evenwithan
AdvancedAirbagSystem.
—Ifyoumustinstallarearward-facingchild
safetyseatonthefrontpassengerseatbe-
causeofexceptionalcircumstancesandthe
PASSENGERAIRBAGOFF#;lightdoesnot
appearandstayon,immediatelyinstallthe
rear-facingchildsafetyseatinarearseating
positionandhavetheairbagsysteminspect-
edbyyourauthorizedAudidealer.
—If,inexceptionalcircumstances,youmust
installaforward-facingchildrestrainton
thefrontpassengerseat,alwaysmovethe
seatintoitsrearmostpositionintheseat's
foreandaftadjustmentrange,asfaraway
fromtheairbagaspossible.Thebackrest
mustbeadjustedtoanuprightposition.
MakesurethatthePASSENGERAIRBAG

275

Airbagsystem


OFF$¥;lightcomesonandstaysonallthe
timewhenever theignitionisswitchedon.

ZAWARNING
—IfthePASSENGERAIRBAGOFF%;light
doesnotgooutwhenanadultissittingon
thefrontpassengerseataftertakingthe
stepsdescribed above,makesuretheadult
isproperlyseatedandrestrainedatoneof
therearseatingpositions.
—Havetheairbagsysteminspectedbyyour
authorizedAudidealerbefore transporting
anyoneonthefrontpassengerseat.
G)Tips
Ifthecapacitivepassengerdetectionsystem
determinesthatthefrontpassengerseatis
empty,thefrontalairbagonthepassenger
sidewillbeturnedoff,andthePASSENGER
AIRBAGOFF;lightwillstayon.
Repair,careanddisposaloftheairbags
Partsoftheairbagsystemareinstalledatmany
differentplacesonyourAudi.Installing,remov-
ing,servicingorrepairingapartinanareaofthe
vehiclecandamageapartofanairbagsystem
andpreventthatsystemfromworkingproperly
inacollision.

Therearesomeimportantthingsyouhaveto
knowtomakesurethattheeffectivenessofthe
systemwillnot beimpairedandthatdiscarded
componentsdonotcauseinjuryorpollutethe
environment.

ZA\WARNING
Impropercare,servicingandrepairproce-
durescanincreasetheriskofpersonalinjury
anddeathbypreventinganairbagfromde-
ployingwhenneededordeployinganairbag
unexpectedly:
—Nevercover,obstruct,orchangethesteer-
ingwheelhornpadorairbagcoverorthein-
strumentpanelormodifytheminanyway.
—Neverattachanyobjectssuchascupholders
ortelephonemountingstothesurfacescov-
eringtheairbagunits.

276

—Forcleaningthehornpadorinstrument
panel,useonlyasoft,dryclothoronemois-
tenedwithplainwater.Solventsorcleaners
coulddamagetheairbagcoverorchange
thestiffnessorstrengthofthematerial so
that
theairbagcannotdeployandprotect
properly.
—Neverrepair,adjust,orchangeanypartsof
theairbagsystem.
—Allworkonthesteeringwheel,instrument
panel,frontseatsorelectricalsystem(in-
cludingtheinstallationofaudioequipment,
cellulartelephonesandCBradios,etc.)
mustbeperformedbyaqualifiedtechnician
whohasthetrainingandspecialequipment
necessary.
—Foranyworkontheairbagsystem,we
stronglyrecommendthatyouseeyourau-
thorizedAudidealerorqualifiedworkshop.
—Nevermodifythefrontbumperorpartsof
thevehiclebody.
—Alwaysmakesurethatthesideairbagcan
inflatewithoutinterference:
—Neverinstallseatcoversorreplacement
upholsteryoverthefrontseatbacksthat
havenotbeenspecificallyapprovedbyAu-
di.
—Neveruseadditionalseatcushionsthat
covertheareaswherethesideairbagsin-
flate.
—Damagetotheoriginalseatcoversorto
theseamintheareaofthesideairbag
modulemustalwaysberepairedimmedi-
atelyby anauthorizedAudidealer.
— Theairbagsystemcandeployonlyonce.Af-
teranairbaghasbeendeployed,it mustbe
replacedwithnewreplacementpartsde-
signedandapprovedespeciallyforyourAudi
model
version.Replacementofcomplete
airbagsystemsorairbagcomponentsmust
beperformedbyqualifiedworkshopsonly.
Makesurethatanyairbagserviceactionis
enteredinyourAudiWarranty&Mainte-
nancebookletunderAIRBAGREPLACEMENT
RECORD.
—Forsafetyreasonsinsevereaccidents,the
alternatorandstarterareseparatedfrom

8W0012721BG
Airbagsystem


thevehiclebatterywithapyrotechniccircuit
interrupter.
—Workonthepyrotechniccircuitinterrupter
mustonlybeperformedbyaqualified
technicianswhohavetheexperience,in-
formationandspecialtoolsnecessaryto
performtheworksafely.
—Ifthevehicleorthecircuitinterrupteris
scrapped,allapplicablesafetyprecautions
mustbefollowed.
OtherthingsthatcanaffectAdvanced
Airbagperformance
Changingthevehicle'ssuspensionsystemcan
changethewaythattheAdvancedAirbagSystem
performsinacrash.Forexample,usingtire-rim
combinationsnotapprovedbyAudi,loweringthe
vehicle,changingthestiffnessofthesuspension,
includingthesprings,suspensionstruts,shock
absorbersetc.canchangetheforcesthatare
measuredbytheairbagsensorsandsenttothe
electroniccontrolunit.Somesuspensionchanges
can,forexample,increasetheforcelevelsmeas-
uredbythesensorsandmaketheairbagsystem
deployincrashesinwhichitwouldnotdeployif
thechangeshadnotbeenmade.Otherkindsof
changesmayreducetheforcelevelsmeasuredby
thesensorsandpreventtheairbagfromdeploy-
ingwhenitshould.

ZA\WARNING
Changingthevehicle'ssuspensionincluding
useof unapprovedtire-rimcombinationscan
changeAdvancedAirbagperformanceandin-
creasetheriskofseriouspersonalinjuryina
crash.
—Neverinstallsuspensioncomponentsthat
donothavethesameperformancecharac-
teristicsasthecomponentsoriginallyinstal-
ledonyourvehicle.
—Neverusetire-rimcombinationsthathave

notbeenapprovedbyAudi.

Kneeairbags
preaal)aCeaitLs-eh)
Thekneeairbagsystemcanprovidesupplemen-
talprotectiontoproperlyrestrained frontseat
occupants.
= g
=
8

Fig.231Driver'skneeairbag
Thedriverkneeairbagisintheinstrumentpanel
underneaththesteeringwheel>fig.231,the
airbagforthepassengerisataboutthesame
heightintheinstrumentpanelunderneaththe
glovecompartment.
Thekneeairbagoffersadditionalprotectionto
thedriver'sandpassenger'skneesandupperand
lowerthigh areasandsupplementstheprotec-
tionprovidedbythesafetybelts.
Ifthefrontairbagsdeploy,thekneeairbagsalso
deployinfrontalcollisionswhenthedeployment
thresholdstoredinthecontrolunitismet
=page271,Moreimportantthingstoknow
aboutfrontairbags.
Inadditiontotheirnormalsafetyfunction,safe-
tybeltshelpkeepthedriverorfrontpassengerin
positioninafrontalcollisionso thattheairbags
canprovidesupplementalprotection.
Theairbagsystemisnotasubstituteforyour
safetybelt.Rather,itispartoftheoveralloccu-
pantrestraintsysteminyourvehicle.Alwaysre-
memberthattheairbagsystemcanonlyhelpto
protectyouifyouarewearingyoursafetybelt
andwearingitproperly.Thisiswhyyoushouldal-
wayswearyoursafetybelt,notjustbecausethe
lawrequiresyoutodoso>page253,Generalin-
formation.
277
>

Airbagsystem

Remembertoo,airbagswilldeployonlyonceand
onlyincertainkindsofaccidents-yoursafety
beltsarealwaystheretoofferprotectioninthose
accidentsinwhichairbagsarenotsupposedto
deployorwhenthey havealreadydeployed,for
examplewhenyourvehiclestrikesorisstruckby
anotherafterthefirstcollision.
Thisisjustoneofthereasonswhyanairbagis
notasubstituteforthesafetybelt.Theairbag
systemworksmosteffectivelywhenusedwith
thesafetybelts.Therefore,alwayswearyour
safetybeltscorrectly.
Itisimportanttorememberthatwhilethesup-
plementalkneeairbagsystemisdesignedtore-
ducethelikelihoodofseriousinjuries,otherinju-
ries,forexample,swelling,bruisingandminor
abrasionsandfrictionburnscanalsooccurwhen
anairbaginflates.
Thekneeairbagsystembasicallyconsistsof:
—Theelectroniccontrolmodule
—Twoinflatableairbags(airbagandgasgenera-
tor),oneforthedriverandoneforthefront
passenger
—Theairbagindicatorlightintheinstrument
panel
Thekneeairbagsystemwillnotdeploy:
—whentheignitionisswitchedoff
—infrontalcollisionswhenthedeceleration
measuredbythecontrolunitistoolow
—insidecollisions
—inrear-endcollisions
—inrollovers
—inthe eventofasystemmalfunction(warning/
indicatorlightison)>page23.


Z\WARNING
—Safetybeltsandtheairbagsystemcanonly
provideprotectionwhenoccupantsarein
theproperseatingposition>page271.
—Iftheairbagindicatorlight>page23
comeswhenthevehicleisbeingused,have
thesysteminspectedimmediatelybyyour
authorizedAudidealer.Itispossiblethat
theairbagwillinflatewhenitisnotsup-
posedto,orwillnotinflatewhenitshould.

278
ataan-\-i-liaey1emela
Theriskofinjurytothelegareacanbereduced
byfullyinflatedkneeairbags.
5 ¢
2
=a 3
Fig.232Inflatedairbagsprotectinginafrontalcollision
Thekneeairbagsystemhasbeendesignedso
thattheairbagsforthedriverandfrontpassen-
gerdeployincertainbut notallfrontalcollisions.
Ifthefrontairbagsdeploy,thekneeairbagsalso
deployinfrontalcollisionswhenthedeployment
thresholdstoredinthecontrolunitismet.
Whenthesystemdeploys,theairbagsfillwitha
propellantgas,andinflatebetweenthelower
partoftheinstrumentpanelandthedriverand
thelowerpartoftheinstrumentpanelandthe
frontpassenger>page271,fig.229.
Althoughtheyarenotasoftpillow,theycan
“cushion”theimpactandinthiswaythey can
helptoreducetheriskofinjurytothelowerex-
tremities.
Allofthistakesplaceintheblinkofaneye,so
fastthatmanypeopledon'tevenrealizethatthe
airbagshavedeployed.Theairbagsalsoinflate
withagreatdeal offorceanditisimportantfor
occupantsafetythatnothingshouldbeintheir
waywhentheydeploy.
Fullyinflatedairbagsincombinationwithproper-
lywornsafetybeltsslowdownandlimittheoc-
cupant'sforwardmovementandhelptoreduce
theriskofinjury.