2019 AUDI TT COUPE check engine light

8S1012721BA
CheckingandFilling

Emissionscontrol
system
Generalinformation
Z\WARNING
Thetemperatureoftheexhaustsystemis
high,bothwhendrivingandafterstopping
the
engine.
—Nevertouchtheexhausttailpipesoncethey
have
becomehot. Thiscouldresultinburns.

—Donotparkyourvehicleoverflammable
materialssuchasgrassorleavesbecause
thehightemperatureoftheemissionssys-
temcouldstartafire.
—Donotapplyunderbodyprotectantinthe
exhaustsystemarea,becausethisincreases
theriskoffire.
Catalyticconverter
Followthesafetyprecautions>page235,Gener-
alinformation.

Thevehiclemayonlybedrivenwithunleaded
gasoline,orthecatalyticconverterwillbede-
stroyed.
Neverdriveuntilthetankiscompletelyempty.
Theirregularsupplyoffuelthatresultsfromthat
cancauseenginemisfires.Uncombustedfuel
couldentertheexhaustsystem,whichcould
causeoverheatinganddamagetothecatalytic
converter.
OnBoardDiagnosticSystem(OBD)
TheOnBoardDiagnosticSystemmonitorsthe
engineandtransmissioncomponentsthatinflu-
enceemissions.
- &
fzz

portfortheOnBoardDiagnosticSystem(OBD)
OnBoardDiagnosticSystem
EnginedatacanbereadoutattheOnBoardDi-
agnosticSystemconnectionportusingaspecial
testingdevice>fig.179.
Indicatorlight
IftheSindicatorlightblinks orturnson,there
isamalfunctionthatiscausingpooremissions
qualityandthatcoulddamagethecatalyticcon-
verter.DriveslowlytoanauthorizedAudidealer
orauthorizedAudiServiceFacilitytohavethe
malfunctioncorrected.

Z\WARNING
Incorrectuseofthe connectionportforthe
OnBoardDiagnosticSystemcancausemal-
functions,whichcanthenresultinaccidents
andseriousinjuries.
—OnlyallowanauthorizedAudidealeror au-
thorizedAudiServiceFacilitytoreadout the
enginedata.

Enginecompartment
Generalinformation
Specialcareisrequiredifyouareworkinginthe
enginecompartment
Forworkintheenginecompartment,suchas
checkingandfillingfluids,thereisariskofin-
jury,scalding,accidents,andburns.Forthis
235
>

8S1012721BA
CheckingandFilling

®Note
Whenfillingfluids,besurenottoaddanyflu-
idstothewrongreservoirs.Otherwisesevere
malfunctionsandenginedamagewilloccur.
@Forthesakeoftheenvironment
Youshouldregularlycheckthegroundunder
yourvehicleinordertodetectleaksquickly.If
therearevisiblespotsfromoilorotherfluids,
bringyourvehicletoanauthorizedAudideal-
erorauthorizedAudiServiceFacilitytobe
checked.
Openingandclosingthehood
Thehoodisreleasedfrominsidethevehicle.

yt\
Fig.180Sectionfromthedriver'ssidefootwell:release
lever
Q 3
Ss
2=a a

Fig.181Unlockedhood:lever

D)The&>symbolontheleverwasstill beingdesignedat
thetimethismanualwasprinted.
Makesurethewiperarmsarenotraisedupfrom
thewindshield.Otherwisethepaintcouldbe
damaged.
Openingthehood
>Withthedooropen,pullthelever>”)below
theinstrumentpanelinthedirectionofthear-
row>fig.180.
>Raisethehoodslightly>A\.
»Pressthelever>fig.181inthedirectionofthe
arrow.Thisreleasesthehooks.
>Openthehood.
Closingthehood
>Pushthehooddownuntilyouoverridethe
forceofthestruts.
>Letthehoodfalllightlyintothelatch.Donot
pressitin.>/\.

ZAWARNING
—Neveropenthehoodwhenthereissteamor
coolantescapingfromtheenginecompart-
ment,becausethereisariskthatyoucould
beburned.Waituntilnosteamorcoolantis
escaping.
—Forsafetyreasons,thehoodmustalwaysbe
latchedsecurelywhiledriving.Becauseof
this,alwayscheckthehoodafterclosingit
tomakesureitislatchedcorrectly.Thehood
islatchedifthefrontcornerscannotbelift-
ed.
—Ifyounoticethatthehoodisnotlatched
whileyouaredriving,stopimmediatelyand
closeit,becausedrivingwhenthehoodis
notlatchedincreasestheriskofanaccident.


237

8S1012721BA
CheckingandFilling


Audirecommends
Sbastrol|BIDEPrarzssional
AudirecommendsusingtheLongLifehigh-per-
formanceengineoilfromAudiGenuineParts.
IYTet
Engineoilpressure


2Turnoffengine!Oilpressuretoolow
Stopdrivingandswitchtheengineoff.Checkthe
engineoillevel>page239.
—Iftheengineoillevelistoolow,addengineoil
=>page240.Onlycontinuedrivingoncethein-
dicatorlightturnsoff.
—Iftheengineoilleveliscorrectandtheindica-
torlightstillturnson,turntheengineoffand
donotcontinuedriving.SeeanauthorizedAudi
dealerorauthorizedAudiServiceFacilityforas-
sistance.
Engineoillevel
Appliesto:vehicleswithoillevelwarning
3Pleasecheckoillevel
—Youmaycontinuedrivingforthetimebeing.
Checktheengineoillevelassoonas possible
=>page239,Checkingtheengineoillevel.
—Iftheengineoilleveliscorrectandtheindica-
torlightstillturnson,driveatlowengine
speedtoanauthorizedAudidealerorauthor-
izedAudiServiceFacility.
Engineoilsensor
2Oillevelsensor:oilchangenecessary.Please
contactService
Fuelhasenteredtheengineoil.Thiswillcause
theengineoilleveltoriseslowlyandtheengine
oilqualitytodecrease.Donotextractengineoil
toreducethelevel,becausethiswillincreasethe
riskofenginedamage.DrivetoanauthorizedAu-
didealerorauthorizedAudiServiceFacilityim-
mediatelytohaveengineoilextracted.
3Oillevelsystem:malfunction!Pleasecon-
tactService
Thesensorthatcheckstheengineoillevelhas
malfunctioned.DrivetoanauthorizedAudideal-
erorauthorizedAudiServiceFacilityimmediately
tohavethemalfunctioncorrected.
&Oilpressuresensor:malfunction!Please
contactService
Thesensorthatcheckstheengineoilpressure
hasmalfunctioned.DrivetoanauthorizedAudi
dealerorauthorizedAudiServiceFacilityimmedi-
atelytohavethemalfunctioncorrected.
Enginewarm-uprequest*
iPleasedrive towarmupengine
Fuelhasenteredtheengineoil,eitherduetolow
outsidetemperaturesorfrequentshortdrives.
Driveuntiltheengineiswarmso thatthefuelin
theengineoilwillevaporate.Avoidhighengine
speeds,fullaccelerating,andheavyengineloads
whendoingthis.
@)Tips
TheoilpressurewarningEEisnot anoillevel
indicator.
Alwayschecktheoillevelregularly.
Checkingtheengineoillevel
Q

BsVv-0588
&
Fig.183Oildipstick(example):checkingtheengineoillev-
el

Observethesafetyprecautions>A\inGeneral
informationonpage236.
>»Parkthevehicleonalevelsurface.
>Shuttheengineoffwhenitiswarm.
>Waitapproximatelytwominutes.
>Openthehood>page237.
>Removetheoildipstick>page238,fig. 182,
wipeitoffwithacleanclothandinsertitallthe
wayinagain.
>Removetheoildipstickagainandthenreadthe
oillevel>tableonpage240.
239
>

CheckingandFilling


—Draintheoilintoacontainerdesignedfor
thispurposethatislargeenoughtoholdthe
fullamountofoilinyourengine.
—Engineoilispoisonous.Alwaysstoreoutof
reachofchildren.
—Prolongedcontactofusedengineoilwith
theskinmaycauseskindamage.Always
washoiloffimmediatelywithsoapand wa-
tertoprotectyourskin.

@)Note
Donotmixanyadditiveswiththeengineoil.
Additivesmaycauseenginedamagethatis
notcoveredbyyourNewVehicleLimitedWar-
ranty.
@Forthesakeoftheenvironment
—Beforechangingtheengineoil,makesure
youcandisposeoftheusedengineoilcor-
rectly.
—Engineoilmustalways bedisposedofcor-
rectly.Donot dumpitintheyard,inthefor-
est,orinopenwater,riverchannels,orsew-
ers.
—Haveyourusedengineoilrecycledbybring-
ingittoausedoilcollectionsiteorcontact
agasstation.
Coolingsystem
Theenginecoolingsystemisfilledwithamixture
ofpurifiedwaterandcoolantadditiveatthefac-
tory.Thiscoolantmustnot be notchanged.
ThecoolantlevelismonitoredthroughtheBin-
dicatorlight>page17.However,occasionally
checkingthecoolantlevelmanuallyisrecom-
mended.
Coolantadditive
Thecoolantadditiveismadeofanti-freezingand
corrosionprotectionagents.Onlyusethefollow-
ingcoolantadditives.Theseadditivesmaybe
mixedwitheachother.
242
CoolantadditiveSpecification
G12++TL774G
G13TL774)


Theamountofcoolantadditivethatneedstobe
mixedwithwaterdependsontheclimatewhere
thevehiclewillbeoperated.Ifthecoolantaddi-
tivepercentageistoolow,thecoolantcanfreeze
anddamagetheengine.



CoolantFreezeprotec-
additivetion
Warmmin.40%min.-13°F
regionsmax.45%(-25°C)
Cold min.50%max.-40°F
regionsmax.55%(-40°C)

()Note
—Beforethestartofwinter,haveanauthor-
izedAudidealerorauthorizedAudiService
Facilitycheckifthecoolantadditiveinyour
vehiclematchesthepercentageappropriate
fortheclimate.Thisisespeciallyimportant
whendrivingincolderclimates.
—Iftheappropriatecoolantadditiveisnot
availableinanemergency,donotadd any
otheradditive.Youcoulddamagetheen-
gine.Ifthishappens,onlyusewaterandre-
storethecorrectmixtureratiowiththe
specifiedcoolantadditiveassoonaspossi-
ble.
—Onlyrefillwithnewcoolant.
—Radiatorsealantmustnotbemixedwith
thecoolant.
Addingcoolant


RAZ-0539


MIN

Fig.185Enginecompartment-coolantexpansiontank
(diagram):@cover;@)markings

8S1012721BA
CheckingandFilling

Observethesafetyprecautions>page235,Gen-
eralinformation.
Checkingtheenginecoolantlevel
»Parkthevehicleonalevelsurface.
>Switchtheignitionoff.
>Readthecoolantlevelonthecoolantexpansion
tank>page238,fig.182.Thecoolantlevel
mustbebetweenthemarkings@)>fig.185
whentheengineiscold.Whentheengineis
warmitcanbeslightlyabovetheuppermark-
ing.
Addingcoolant
Requirement:
theremustbearesidualamountof
coolantintheexpansiontank>@.
Ifyoumustaddcoolant,useamixtureofwater
andcoolantadditive.Mixing thecoolantadditive
withdistilledwaterisrecommended.
>Allowtheenginetocool.
>»Placealarge,thicktowelonthecoolantexpan-
siontankcover.
>Removethecover(@)9fig.185carefullytothe
left>AY.
>Addthecorrectmixtureratioofcoolant
>page242uptotheuppermarking@)
>fig.185.
>Makesurethatthefluidlevelremainsstable.
Add morecoolantifnecessary.
>Closethecapsecurely.
Coolantlossusuallyindicatesthatthereisaleak.
Immediatelydriveyourvehicletoanauthorized
AudidealerorauthorizedAudiServiceFacility
andhavethecoolingsysteminspected.Ifthe
coolingsystemisnotleaking,coolantlosscanre-
sultfromthecoolantboilingdueoverheating
andthenbeingforcedoutofthecoolingsystem.

Z\WARNING
— Theenginecompartmentinanyvehiclecan
be
adangerousarea.Stoptheengineandal-
lowitto coolbeforeworkingintheengine
compartment.Alwaysfollowtheinforma-
tionfoundin>page235,Generalinforma-
tion.
—Neveropenthehoodifyoucan seeorhear

steamorcoolantescapingfromtheengine

compartment.Thisincreasestheriskof
burns.Thecoolingsystemisunderpressure.
Whenyounolongerseeorhearsteamor
coolantescaping,youmayopentheengine
compartmentwithcaution.
—Whenworkingintheenginecompartment,
rememberthattheradiatorfancanswitch
oneveniftheignitionisswitchedoff,which
increasestheriskofinjury.
—Coolantadditiveandcoolantcan bedanger-
oustoyourhealth.Forthisreason, storethe
coolantintheoriginalcontainerandaway
fromchildren.Thereisariskofpoisoning.
@)Note
Donotaddcoolantiftheexpansiontankis
empty.Aircould enterthecoolingsystemand
damagetheengine.Ifthisisthecase,donot
continuedriving.SeeanauthorizedAudideal-
erorauthorizedAudiServiceFacilityforassis-
tance.


Brakefluid

BFV-0229)


Fig.186Enginecompartment:caponbrakefluidreservoir
Observethesafetyprecautions>/A\inGeneral
informationonpage236.
Checkingthebrakefluidlevel
>Readthebrakefluidlevelonthebrakefluidres-
ervoir>page238,fig.182.Thebrakefluidlev-
elmustbebetweentheMINandMAXmarkings
oa”.
Thebrakefluidlevelismonitoredautomatically.
Changingthebrakefluid
Brakefluidshould bechangedatregularinter-
vals.Havethebrakefluidchangedbyan
243

CheckingandFilling

authorizedAudidealerorauthorizedAudiService
Facility.TheauthorizedAudidealerorauthorized
AudiServiceFacilitywillinformyouofthere-
placementintervals.

ZAWARNING
—IfthebrakefluidlevelisbelowtheMIN
marking,itcanimpair thebrakingeffectand
drivingsafety,whichincreasetheriskofan
accident.Donotcontinuedriving.Seeanau-
thorizedAudidealerorauthorizedAudi
ServiceFacilityforassistance.
—Ifthebrakefluidisold,bubblesmayformin
thebrakesystemduringheavybraking.This
couldimpairbrakingperformanceanddriv-
ingsafety,whichincreasestheriskofanac-
cident.
—Thebrakefluidinyourvehiclemustmeet
thestandardVW50114andisavailableat
anauthorizedAudidealerorauthorizedAu-
diServiceFacility.Ifthisbrakefluidisnot
available,anotherhigh-gradebrakefluidof
equivalentqualitymaybeused,anditmust
meettheU.S.FederalMotorVehicleStand-
ard(FMVSS)116DOT4,Class6.

@)Note
—IfthebrakefluidlevelisabovetheMAX
marking,brakefluidmayleakoutoverthe
edgeofthereservoirandresultindamage
tothevehicle.
—Donotallowanybrakefluidtocomeinto
contactwiththevehiclepaint,becauseit
willcorrodethepaint.
Electricalsystem
Ifthez=orfm]indicatorlightturnson,thereisa
malfunctioninthegenerator,thebattery,orthe
vehicleelectricalsystem.
ziElectricsystem:malfunction!Batteryisnot
beingcharged
DrivetoanauthorizedAudidealerorauthorized
AudiServiceFacilityimmediately.Turnoffallun-
necessaryelectricalequipmentbecauseitwill
drainthebattery.SeeanauthorizedAudidealer
244
orauthorizedAudiServiceFacilityifthebattery
chargelevelistoolow.
=Electricalsystem:lowbatterycharge.Bat-
tery
willbechargedwhiledriving
Thestartingabilitymaybeimpaired.
Ifthismessageturnsoffafteralittlewhile,the
vehiclebatteryhaschargedenoughwhiledriving.
Ifthismessagedoesnotturnoff,driveimmedi-
atelytoanauthorizedAudidealerorauthorized
AudiServiceFacility.
Battery
Batterygeneralinformation
Becauseofthecomplexpowersupply,allworkon
batteriessuchasdisconnecting,replacing,etc.,
should only beperformedby anauthorizedAudi
dealerorauthorizedAudiServiceFacility>A\.
Multiplebatterieswithdifferenttechnologies
maybeinstalledinyourvehicle:
—Vehiclebattery(forexample,forstartingthe
engine,basicpowersupply)>page245,Lead
batteryor>page245,Otherbatterytypes
—Auxiliarybattery(forexample,forrecuperation
oroptionalequipment)>page245,Otherbat-
terytypes
Notrunningthevehicleforlongperiodsof
time
Thebatterywillgraduallydrainifthevehicle
doesnotrunforlongperiodsoftime.Toensure
thatthevehiclecanstill bestarted,theelectrical
equipmentwillbereducedorswitchedoff
=>page89.Someconveniencefunctions,suchas
interiorlightingorpowerseatadjustment,may
notbeavailableundercertaincircumstances.
Theseconveniencefunctionswillbeavailable
againonceyouswitchtheignitiononandstart
theengine.
Evenwhenelectricalequipmentisswitchedoff,
theequipmentcanstilldrainthebatteryifthe
vehicleisnotdrivenforlongperiodsoftime.
Deepdrainingresultsinachemicalreactionthat
destroys
theinsideofthebattery.Thebattery
mustbechargedeverymonthtopreventthis>

CheckingandFilling

@Forthesakeoftheenvironment
XEDonotdisposeofthesetypesofbatter-
iesinhouseholdtrash.Theycontainharmful
substancesandrecyclablerawmaterials.Con-
tactanauthorizedAudidealerorauthorized
AudiServiceFacilityformoreinformation.
Chargingthebattery

Fig.187Enginecompartment:connectorsforachargeror
jumpstartcables
Notethesafetyprecautions>page235,General
information,>/\inBatterygeneralinforma-
tiononpage245and>/\.
Requirement:onlyusechargers withamaximum
chargingcurrentof14.8volts.Thebatteryca-
blesremainconnected.
>Switchofftheignitionandallelectricalequip-
ment.
>Openthehood=page237.
>Openthecoveronthepositiveterminal
>fig.187.
>Clamptheterminalclampsonthechargercor-
rectlyontothegroundpoint©)andthepositive
terminal@.
> Insertthepowercableforthechargingdevice
intothesocketandswitchthedeviceon.
>Attheendofthechargingprocess,switchthe
chargeroffandpullthepowercableoutofthe
socket.
>Removethechargingdeviceterminalclamps.
>Closethecoveronthepositiveterminal.
>Closethehood>page237.

ZA\WARNING
—Neverconnectthechargingcabledirectlyto
yourvehiclebattery.Onlyuse the connec-

246

tionsintheenginecompartment
=>page246.
—Ahighlyexplosivemixtureofgasescanform
whenchargingbatteries.Onlychargethe
batteryinwell-ventilatedareas.
—Adrainedbatterycanfreezeattempera-
turesaround32°F(0°C).Donotchargeor
useafrozenorthawedbattery.Ificeforms,
thebatteryhousingcancrackandbattery
electrolytecanleakout,whichincreasesthe
riskofanexplosionandchemicalburns.
ContactanauthorizedAudidealerorauthor-
izedAudiServiceFacilityformoreinforma-
tion.
—Donotconnectordisconnectthecharging
cablewhilechargingbecausethisincreases
theriskofanexplosion.

Gi)Tips
Readallofthemanufacturer'sinstructions
forthechargerbeforechargingthebattery.
Windshieldwasher
system

B4M-0135}

Fig.188Enginecompartment:washerfluidreservoircap
Thewindshieldwasherreservoir©containsthe
cleaningsolutionforthewindshieldandthe
headlightwashersystem*>page238,fig. 182.
Thereservoircapacitycanbefoundin
=>page293.
Toreducetheriskof limescaledepositsonthe
spraynozzles,usecleanwaterwithlowamounts
ofcalcium.Alwaysaddwindowcleanertothewa-
ter.Whentheoutsidetemperaturesarecold,an
anti-freezingagentshould beaddedtothewater
sothatitdoesnotfreeze.

Wheels


thetreadtoseparateandevencausethetire
toburst,increasingtheriskofanaccident.
—Thetirepressuremonitoringsystemdoes
notwarnaboutdamageordefectsinthe
tireconstructionthatcouldcausethetireto
burst,forexample.Inspectyourtiresregu-

larly.

@)Tips
—Iftiresarereplaced,thesensorsandvalves
donotneedtoberemovedorreplaced.Only
replacethevalvestemand,ifnecessary,the
valveandthewheelelectronics.Ifyouhave
questions,seeanauthorizedAudidealeror
authorizedAudiServiceFacility.
—Anincorrectdisplayoramalfunctioninthe
tirepressuremonitoringsystemcanoccur
afterusingthetiremobilitykit.Havethe
sensorsreplacedby anauthorizedAudi
dealerorauthorizedAudiServiceFacility.
—Foranexplanationonconformitywiththe
FCCregulationsintheUnitedStatesandthe
IndustryCanadaregulations,see
=>page291.
Displayingtirepressuresandtemperatures
Appliesto:vehicleswithtirepressuremonitoringsystem
Requirement: youmustbedrivingthevehicle.

> SelectintheInfotainmentsystem:[MENU]but-
ton>Service&checks>Tirepressuremonitor-
ing>Displaytirepressure.

Thecurrenttirepressuresareshowningreen,
yelloworrednumbersintheInfotainmentsys-
tem:
—
Green:thecurrenttirepressureandthespeci-
fiedtirepressureareapproximatelythesame.
—Yellow:thecurrenttirepressureislowerthan
thespecifiedtirepressure.
—Red:thecurrenttirepressureismuchlower
thanthespecifiedtirepressure.
Thespecifiedtirepressureisthelasttirepressure
that
wasstored>page269.
Notethatthetirepressurealsodependsonthe
temperatureofthetire.Thetirepressureincreas-
esastheenginebecomeswarmerwhiledriving.
268
ZAWARNING
Readandfollowtheimportantinformation
andnotes>page267.
(i)Tips
Thetirepressureortemperatureisnotdis-
playedwhilethevehicleisstationaryandin
adaptationmode.Dashes--.--areshownin
placeofthepressureandtemperature.
Obiieyyescetiess
Appliesto:vehicleswithtirepressuremonitoringsystem

Ifthe@indicatorlightturnson,thepressurein
atleastonetireistoolowornewsensorswere
notadapted:
@indicatorlightsturnsonafterturningthe
ignitionon
Thetirepressureistoolowcomparedtothe
specifiedpressure.
>Checkandstorethetirepressure(s)thenext
timeitispossible>page269.
@indicatorlightturnsonwhiledriving
Wheelswithnewsensorswerenotadaptedor
thetirepressurehasreachedacriticallevelcom-
paredtothespecifiedpressure.
>Avoidunnecessarysteeringandbrakingmaneu-
vers.
>Adaptyourdrivingstyletothesituation.
>Stopassoonas possibleandcheckthetire(s).
>Ifitispossibletocontinuedriving,seeanau-
thorizedAudidealerorauthorizedAudiService
Facilityimmediatelyandhaveyourtire(s)re-
pairedorreplaced.

ZA\WARNING
Readandfollowtheimportantinformation
andnotes>page267.