2019 AUDI S4 wiring

Airbagsystem


—Ifyouareunrestrained,leaningforward,sit-
tingsidewaysoroutofpositioninanyway,
yourriskofinjuryismuchhigher.
—Youwillalsoreceiveseriousinjuriesand
couldevenbekilledifyouareupagainstthe
airbagortooclosetoitwhenitinflates-
evenwithanAdvancedAirbag>page261.

Z\WARNING
Achildinarearward-facingchildsafetyseat
installedonthefrontpassengerseatwillbe
seriouslyinjuredandcanbekilledifthefront
airbaginflates-evenwithanAdvancedAirbag
System.
—AlthoughtheAdvancedAirbagSystemin
yourvehicleisdesignedtoturnoffthefront
airbagwhenarearward-facingchildre-
strainthasbeeninstalledonthefront pas-
sengerseat,nobodycanabsolutelyguaran-
teethatdeploymentisimpossibleinallcon-
ceivablesituationsthatmayhappenduring
the
usefullifeofyourvehicle.
—Theinflatingairbagwillhitthechildsafety
seatorinfantcarrierwithgreatforceand
willsmashthe childsafetyseatandchild
againstthebackrest,centerarmrest,door,
orroof.
—Alwaysinstallrearward-facingchildre-
straintsontherearseat.
—Ifyoumustinstallarearwardfacingchild
safetyseatonthefrontpassengerseatbe-
causeofexceptionalcircumstancesandthe
PASSENGERAIRBAGOFF%;lightdoesnot
comeonandstayon,immediatelyinstall
therear-facingchildsafetyseatinarear
seatingpositionandhavetheairbagsystem
inspectedbyyourauthorizedAudidealer.

ZAWARNING
If,inexceptionalcircumstances,youmustin-
stallaforward-facingchildrestraintonthe
frontpassenger'sseat:
—Alwaysmakesuretheforward-facingseat
hasbeendesignedandcertifiedbyitsmanu-
facturerforuseonafrontseatwithapas-
sengerfrontandsideairbag.

268
—Neverput theforward-facingchildrestraint
upagainstorverynear theinstrumentpan-
ele
—Alwaysmovethefrontpassengerseattothe
highestpositionintheupanddownadjust-
mentrangeandmoveitbacktotherear-
mostpositionintheseat'sforeandaftad-
justmentrange,asfarawayfromtheairbag
aspossible,beforeinstallingtheforward-
facingchildrestraint.
—Alwaysmakesurethatthesafetybeltupper
anchorageisbehindthechildrestraintand
notnexttoorinfrontofthechildrestraint
sothatthesafetybeltwillbeproperlyposi-
tioned.
—Alwaysmakesurethatthereisnothingon
thefrontpassengerseatthatwillcausethe
capacitivepassengerdetectionsystemin
theseattosignaltotheAirbagSystemthat
theseatisoccupiedbyapersonwhenitis
not,ortosignalthatitisoccupiedbysome-
onewhoisheavierthanthepersonactually
sittingontheseat.Thepresenceofaddi-
tionalobjectscouldcausethepassenger
frontairbagtobeturnedonwhenitshould
beoff,orcouldcausetheairbagtoworkina
waythatisdifferentfromthewayitwould
haveworkedwithouttheobjectontheseat.
—MakesurethatthePASSENGERAIRBAG
OFF7%;lightcomesonandstaysonallthe
timewhenever theignitionisswitchedon.

AdvancedAirbagSystemcomponents
Thefrontpassengerseatinyourvehiclehasalot
ofveryimportantparts oftheAdvancedAirbag
Systeminit.Theseparts includethecapacitive
passengerdetectionsystem,wiring,brackets,
andmore.Thecontrolunitmonitorsthesystem
onthefrontpassengerseatwhentheignitionis
switchedonandturnstheairbagindicatorlight
onwhenamalfunctionintheoneofthesystem
componentsisdetected>page273.Becausethe
frontpassengerseatcontainsimportantparts of
the
AdvancedAirbagSystem,youmusttakecare
topreventitfrombeingdamaged.Damageto>

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

Accessoriesandtechnicalchanges

Usuallymaintenance andrepairworkrequires
specialtools,measuringdevices,andother
equipmentthatisavailableto trainedvehicle
techniciansinordertohelpensurethatyourvehi-
cleandallofitssystemsoperatecorrectly,relia-
bly,andsafely.Performingworkonthevehicle
incorrectlycan impair the operationandreliabili-
tyofyourvehicleandmayvoidoneormoreof
yourvehicle'swarranties.
TechnicalModifications
Interferencewithelectroniccomponents,their
software,thewiring,anddatatransfermaycause
malfunctions.Becauseofthewayelectroniccom-
ponentsareinterconnected,suchmalfunctions
canalsoimpairsystemsthatarenotdirectlyin-
volved.Thismeansthatyouriskbothasubstan-
tialreductionintheoperationalsafety ofyourve-
hicleandincreasedwearofvehiclecomponents.
Someconveniencefunctions,suchastheconven-
ienceturnsignalfunction,individualdooropen-
ingfunction,anddisplays,canbereprogrammed
usingspecialworkshopequipment.Iffunctions
arereprogrammed,theinformationanddescrip-
tionsaboutthesefunctionsinthisOwner'sMan-
ualmaynolongerapplytothechangedfunc-
tions.AudirecommendsthatanauthorizedAudi
dealerorauthorizedAudiServiceFacilityperform
andverifyanyreprogrammingprocedures.


carryoutthejobandhavethecorrecttech-
nicalinformationandthecorrecttools.
—Ifyouareuncertainaboutwhattodo,have
theworkperformedby anauthorizedAudi
dealer,anauthorizedAudiServiceFacility,
oranotherqualifiedworkshop.Seriousper-
sonalinjurymayresultfromimproperlyper-
formedwork.


ZA\WARNING
Maintenanceprocedures,repairs,ortechnical
modificationsthatareperformedincorrectly
increasetheriskofanaccidentandcanlead
toseriousinjuries.


ZA\WARNING
Theenginecompartmentofanymotorvehicle
isapotentiallydangerousareaandcancause
seriouspersonalinjury.
—Alwaysuseextremecautionwhendoingany
workintheenginecompartment.Always
followcommonlyacceptedsafetypractices
andusecommonsense.Neverriskpersonal
injury.
—Neverperformanyworkintheenginecom-
partmentunlessyouknowexactlyhowto

368
C)Note
—Maintenanceprocedures,repairsortechni-
calmodificationsthatareperformedincor-
rectlycancausedamagetothevehicle,such
ascorrosion.
—Ifemergencyrepairsmustbeperformed,
takeyourvehicletoanauthorizedAudideal-
erorauthorizedAudiServiceFacilityassoon
aspossible.
—Audiisnotliablefordamagetothevehicle
resultingfromfailuretocomplywiththese
guidelines.
@)Forthesakeoftheenvironment
—Regularmaintenancecanhelpprotectthe
environment.
—Technicalmodificationstothevehiclecan
haveanegativeimpactonfuelconsumption
andvehicleemissions.
@)Forthesakeoftheenvironment
Undeployedairbagmodulesandpretension-
ers areclassifiedasPerchlorateMaterial-
specialhandlingmayapply,Seewww.dtsc.ca.
gov/hazardouswaste/perchlorate.Whenthe
vehicleorpartsoftherestraintsysteminclud-
ingairbagmodulesandsafetybeltswithpre-
tensionersarescrapped,allapplicablelaws
andregulationsmustbeobserved.Yourau-
thorizedAudidealerisfamiliarwiththesere-
quirementsandwerecommendthatyouhave
yourdealerperformthisserviceforyou.
G)Tips
Becauseofyourvehicle'saluminumbodyde-
sign,allserviceandrepairproceduresaffect-
ingthebodyshould beperformedbyanau-
thorizedAudidealerorauthorizedAudi