2019 AUDI Q7 check engine light

CheckingandFilling

Fuelfillerdooremergencyrelease
Ifthecentrallockingsystemmalfunctions,the
fuelfillerdoorcanbe unlockedmanually.

Fig.257Luggagecompartment:removingthelightcover

LeeeeeerNTT
Fig.258Luggagecompartment:fuelfillerdooremergency
release
Theemergencyreleasemechanismislocatedbe-
hindtherightlightcoverintheluggagecompart-
ment.
>Useascrewdrivertoremovethelightcover
>fig.257.
>Tounlockthefuelfillerdoor,loosen theloop
fromtheretainerandthenpullontheloop
carefully>fig.258>@.
>Pressontheleftsideofthefuelfillerdoorto
openit>page310,fig.255.
©Note
Onlypullontheloopuntilyoufeelresistance.
Youwillnot hearitrelease.Ifyoucontinueto
pull,youcoulddamagetheemergencyre-
leasemechanism.
312

Catalyticconverter
Thevehiclemayonlybedrivenwithunleaded
gasoline,orthecatalyticconverterwillbede-
stroyed.
Neverdriveuntilthetankiscompletelyempty.
Theirregularsupplyoffuelthatresultsfromthat
cancauseenginemisfires.Uncombustedfuel
couldentertheexhaustsystem,whichcould
causeoverheatinganddamagetothecatalytic
converter.
ZAWARNING
Thetemperatureoftheexhaustsystemis
high,bothwhendrivingandafterstopping
theengine.
—Nevertouchtheexhausttailpipesoncethey
havebecomehot.Thiscouldresultinburns.
—Donotparkyourvehicleoverflammable
materialssuchasgrassor leavesbecause
thehightemperatureoftheemissionssys-
temcouldstartafire.
—Donotapplyunderbodyprotectantinthe
exhaustsystemarea,becausethisincreases
theriskoffire.


OnBoardDiagnostic
System(OBD)
TheOn-BoardDiagnosticSystemmonitorsthe
engineandtransmissioncomponentsthatinflu-
enceemissions.
a 88 3 = a
=
Fig.259Footwellonleftsideofthevehicle:connection
portfortheOn-BoardDiagnosticSystem(OBD)

4M0012721BG
CheckingandFilling

On-BoardDiagnosticSystem
EnginedatacanbereadoutattheOn-BoardDi-
agnosticSystemconnectionportusingaspecial
testingdevice>fig.259.
Indicatorlight
IftheSindicatorlightblinksorturnson,there
isamalfunctionthatiscausingpooremissions
qualityandthatcoulddamagethecatalyticcon-
verter.DriveslowlytoanauthorizedAudidealer
orauthorizedAudiServiceFacilitytohave the
malfunction
corrected.
Theindicatorlightcanalsoturnonifthefuelfill-
ercapisnotclosedcorrectly>page310”).

Z\WARNING
Incorrectuseofthe connectionportforthe
On-BoardDiagnosticSystemcancausemal-
functions,whichcanthenresultinaccidents
andseriousinjuries.
—OnlyallowanauthorizedAudidealerorau-
thorizedAudiServiceFacilitytoreadout the
enginedata.

Enginecompartment
MelatimimsaCeMtalemeen)Seen1n
Specialcareisrequiredifyouareworkinginthe
enginecompartment
Forworkintheenginecompartment,suchas
checkingandfillingfluids,thereisariskofin-
jury,scalding,accidents,andburns.Forthis
reason,followallthewarningsandgeneral
safetyprecautionsprovidedinthe followingin-
formation.Theenginecompartmentisadan-
gerousarea.>/\.

Z\WARNING
—Turntheengineoff.
—Switchtheignitionoff.
—Settheparkingbrake.
—Selectthe“P”(Park)selectorleverposition.
—Allowtheenginetocool.


)Dependingontheengine


—Keepchildrenawayfromtheenginecom-
partment.
—Neverspillfluidsonahotengine.Theseflu-
ids(suchastheanti-freezingagentcon-
tainedinthecoolant)canignite.
—Avoidshortcircuitsintheelectricalsystem.
—Neverreachintotheradiatorfan.Thefanis
temperature-controlledandcanturnon
suddenly,evenwhentheignitionisswitched
off.
—Neveropenthehoodwhenthereissteamor
coolantescapingfromtheenginecompart-
ment,becausethereisariskthatyoucould
beburned.Waituntilnosteamorcoolantis
escaping.
—Neveropenthecaponthecoolantexpan-
siontankwhentheengineiswarm.The
coolingsystemisunderpressure.
—Toprotectyourface,hands,andarmsfrom
hotsteamorcoolant,coverthecapwitha
thick clothwhenopening.
—Donotremovetheenginecoverunderany
circumstances.Thisincreasestheriskof
burns.
—Duetotheriskofelectricshock,nevertouch
theignitioncableorothercomponentsin
theelectronichigh-voltageignitionsystem
whentheengineisrunningorisstarting.
—Ifagearisengagedwhilethevehicleissta-
tionaryandtheengineisrunning,donot
presstheacceleratorpedalinadvertently.
Pressingtheacceleratorpedalwillcausethe
vehicletomove, andthiscouldresultinan
accident.
—Ifinspectionsorrepairsmustbeperformed
whiletheengineisrunning,movingcompo-
nents(suchastheribbedbelt,generator,
andradiatorfan)poseanadditionalrisk.
—Set theparkingbrakefirstandselectthe
“P”(Park)selectorleverposition.
—Alwaysmakesurethatnopartsofthe
body,jewelry,ties,looseclothing,and
longhaircanbecaughtinmovingengine
components.Beforeanywork,alwaysre-
moveanyjewelryandties,tiebacklong

313

CheckingandFilling


hair,andmakesureallclothingfitsclose
tothebodytotoreducetheriskofany-
thingbecomingcaughtinenginecompo-
nents.
—Payattentiontothefollowingwarnings
whenworkonthefuelsystemisrequired:
— Donotsmoke.
—Neverworknearopenflames.
—Alwayshaveaworkingfireextinguisher
nearby.
—Allworkonthebatteryorelectricalsystem
inyourvehiclecanresultininjuries,chemi-
calburns,accidents,or burns.Becauseof
this,allworkmustbeperformedonlyby an
authorizedAudidealerorauthorizedAudi
ServiceFacility.
—Limityour exposuretoexhaustandchemi-
calsto asshortatimeaspossible.

ZA\WARNING
CaliforniaProposition65Warning:
—Engineexhaust,someofitsconstituents,
andcertainvehiclecomponentscontainor
emitchemicalsknowntotheStateofCali-
forniatocausecancerandbirthdefectsand
reproductiveharm.Inaddition,certainflu-
idscontainedinvehiclesandcertainprod-
ucts ofcomponentwearcontainoremit
chemicalsknowntotheStateofCalifornia
tocausecancerandbirthdefectsorother
reproductiveharm.
—Batteryposts,terminalsandrelatedacces-
soriescontainleadandleadcompounds,
chemicalsknowntotheStateofCalifornia
to
causecancerandreproductiveharms.
Washhandsafterhandling.

()Note
Whenfillingfluids,besurenottoaddanyflu-
idstothewrongreservoirs.Otherwisesevere
malfunctionsandenginedamagewilloccur.
@Forthesakeoftheenvironment
Youshouldregularlycheckthegroundunder
yourvehicleinordertodetectleaksquickly.If
therearevisiblespotsfromoilorotherfluids,
bringyourvehicletoanauthorizedAudideal-
314
erorauthorizedAudiServiceFacilitytobe
checked.
Openingandclosingthehood
Thehoodisreleasedfrominsidethevehicle.

B4M-0130


WQ~
Fig.261Unlockedhood:lever
Makesurethewiperarmsarenotraisedupfrom
thewindshield.Otherwisethepaintcouldbe
damaged.
Openingthehood
>Withthedriver'sdooropen,pulltheleverbe-
lowtheinstrumentpanelinthedirectionofthe
arrow>fig.260.
>Raisethehoodslightly>A\.
>Pressthelever>fig.261inthedirectionofthe
arrow.Thisreleasesthehooks.
>Openthehood.
Closingthehood
>Pushthehooddownuntilyouoverridethe
forceofthestruts.
> Letthehoodfalllightlyintothelatch.Donot
pressitin.>JX.>

CheckingandFilling

frontoftheenginecompartment>page315,
fig.262.
Iftherecommendedengineoilisnotavailable,in
anemergencyyoumayaddamaximumof1
quart(1liter)ofACEAC3orAPISNengineoil
onetimeuntilthenextoilchange.
Formoreinformationonthecorrectengineoil
foryourvehicle,contactanauthorizedAudideal-
erorauthorizedAudiServiceFacility.Havetheoil
changedbyanauthorizedAudidealerorauthor-
izedServiceFacility.

Audirecommends
Stastrol)(ZIDIEGEProrzssional
AudirecommendsusingtheLongLifehigh-per-
formanceengineoilfromAudiGenuineParts.
Messages
Engineoilpressure


2Turnoffengine.Oilpressuretoolow
Stopdrivingandswitchtheengineoff.Checkthe
engineoillevel>page317.
—Iftheengineoillevelistoolow,addengineoil
=>page317.Onlycontinuedrivingoncethein-
dicatorlightturnsoff.
—Iftheengineoilleveliscorrectandtheindica-
torlightstillturnson,turntheengineoffand
do
notcontinuedriving.SeeanauthorizedAudi
dealerorauthorizedAudiServiceFacilityforas-
sistance.
Engineoillevel
Appliesto:vehicleswithoillevelwarning
2Pleaseaddoilimmediately.
Stoptheengineand donotcontinuedriving.
Checktheengineoillevel>page317andadd
engineoilimmediately>page317.
&Pleaseaddmax.xqt(xJ)oil.Youcancon-
tinuedriving
Addtheamountofoilshownimmediately
=>page317.
Reducingtheoillevel
EAPleasereduceoillevel.
316
Thereistoomuchoilintheengineandthereisa
risk
ofdamagingthecatalyticconverteroren-
gine.DrivetoanauthorizedAudidealerorau-
thorizedAudiServiceFacilityimmediatelytohave
engineoilextractedifnecessary.Avoidhighen-
ginespeeds,fullacceleration,andheavyengine
loads.
Engineoilsensor
2Oillevelsensor:oilchangenecessary.Please
contactService
Fuelhasenteredtheengineoil.Thiswillcause
theengineoilleveltoriseslowlyandtheengine
oilqualitytodecrease.Donotextractengineoil
toreducethelevel,becausethiswillincreasethe
riskofenginedamage.DrivetoanauthorizedAu-
didealerorauthorizedAudiServiceFacilityim-
mediatelytohaveengineoilextracted.
|=.)Oillevelsystem:malfunction!Pleasecon-
tactService
Thesensorthatcheckstheengineoillevelhas
malfunctioned.DrivetoanauthorizedAudideal-
erorauthorizedAudiServiceFacilityimmediately
tohavethemalfunctioncorrected.
BBOilpressuresensor:malfunction!Please
contactService
Thesensorthatcheckstheengineoilpressure
hasmalfunctioned.DrivetoanauthorizedAudi
dealerorauthorizedAudiServiceFacilityimmedi-
atelytohavethemalfunctioncorrected.
Enginewarm-uprequest
[flPleasedrivetowarmupengine
Fuelhasenteredtheengineoil,eitherduetolow
outsidetemperaturesorfrequentshortdrives.
Driveuntiltheengineiswarmso thatthefuelin
theengineoilwillevaporate.Avoidhighengine
speeds,fullaccelerating,andheavyengineloads
whendoing this.
@Tips
Theoilpressurewarning=isnotanoillevel
indicator.
Alwayschecktheoillevelregularly.

4M0012721BG
CheckingandFilling


keep yourforearmparalleltothegroundto
reducetheriskofhotoildrippingdownyour
arm.
—Draintheoilintoacontainerdesignedfor
thispurposethatislargeenoughtoholdthe
fullamountofoilinyourengine.
—Engineoilispoisonous.Alwaysstoreoutof
reachofchildren.
—
Prolongedcontactofusedengineoilwith
theskinmaycauseskindamage.Always
washoiloffimmediatelywithsoapandwa-
tertoprotectyourskin.
@)Note
Donotmixanyadditiveswiththeengineoil.
Additivesmaycauseengine damagethatis
notcoveredbyyourNewVehicleLimitedWar-
ranty.

@Forthesakeoftheenvironment
—Beforechangingtheengineoil,makesure
youcandisposeoftheusedengineoilcor-
rectly.
—Engineoilmustalways bedisposedofcor-
rectly.Donot dumpitintheyard,inthefor-
est,orinopenwater,riverchannels,orsew-
ers.
—Haveyour usedengineoilrecycledbybring-
ingittoausedoilcollectionsiteorcontact
agasstation.
Coolingsystem
Theenginecoolingsystemisfilledwithamixture
ofpurifiedwaterandcoolantadditiveatthefac-
tory.Thiscoolantmustnotbe notchanged.
ThecoolantlevelismonitoredthroughtheBin-
dicatorlight>page21.However,occasionally
checkingthecoolantlevelmanuallyisrecom-
mended.
Ifyoumustaddcoolant,useamixtureofwater
andcoolantadditive.Mixing thecoolantadditive
withdistilledwaterisrecommended.
Coolantadditive
Thecoolantadditiveismadeofanti-freezingand
corrosionprotectionagents.Onlyuse thefollow-
ingcoolantadditives.Theseadditivesmaybe
mixedwitheachother.

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)

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.
319

CheckingandFilling

Addingcoolant

Fig.264Enginecompartment:releasebuttononcoolant
expansiontank
Observethesafetyprecautions>page313,
Workingintheenginecompartment.
Checkingtheenginecoolantlevel
>Parkthevehicleonalevelsurface.
>Switchtheignitionoff.
>Readthecoolantlevelonthecoolantexpansion
tank>fig.264.
>ThecoolantlevelmustbebetweentheMINand
MAXmarkingswhentheengineincold.When
theengineiswarm,thecoolantlevelcan be
slightlyabovetheMAXmarking.
Addingcoolant
Requirement:
theremustbearesidualamountof
coolantintheexpansiontank>@).
>Allowtheenginetocool.
> Placealarge,thicktowelonthecoolantexpan-
siontankcover.
>Pushthereleasebutton>fig.264andcareful-
lyunscrewthecaptotheleftuntilyoufeelre-
sistance>A\.
>Pushthereleasebuttonagainandremovethe
capcompletely.
»Addcoolantmixedinthecorrectratio
=>page319uptotheMAXmarking.
>Makesurethatthefluidlevelremainsstable.
Add morecoolantifnecessary.
>
Turn thecaptotherighttotightenituntilyou
feelresistanceasecondtime.
Coolantlossusuallyindicatesthatthereisaleak.
Immediatelydriveyourvehicletoanauthorized
AudidealerorauthorizedAudiServiceFacility
andhavethecoolingsysteminspected.Ifthe
320
coolingsystemisnotleaking,coolantlosscanre-
sultfromthecoolantboilingdueoverheating
andthenbeingforcedoutofthecoolingsystem.

Z\WARNING
— Theenginecompartmentinanyvehiclecan
beadangerousarea.Stoptheengineandal-
lowittocoolbeforeworkingintheengine
compartment.Alwaysfollowtheinforma-
tionfoundin>page313,Workinginthe
enginecompartment.
—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.Theremaybe airinthecoolingsys-
tem,whichincreasestheriskofenginedam-
age.Ifthisisthecase,donotcontinuedriv-
ing.SeeanauthorizedAudidealerorauthor-
izedAudiServiceFacilityforassistance.

Brakefluid
B8K-2122

Fig.265Enginecompartment:caponbrakefluidreservoir>

4M0012721BG
CheckingandFilling

Observethesafetyprecautions>A\inWorking
intheenginecompartmentonpage313.
Checkingthebrakefluidlevel
>»Readthebrakefluidlevelonthebrakefluidres-
ervoir>page315,fig.262.Thebrakefluidlev-
elmustbebetweentheMINandMAXmarkings
of.
Thebrakefluidlevelismonitoredautomatically.
Changingthebrakefluid
Brakefluidshouldbechangedatregularinter-
vals.Havethebrakefluidchangedby anauthor-
izedAudidealerorauthorizedAudiServiceFacili-
ty.TheauthorizedAudidealerorauthorizedAudi
ServiceFacilitywillinformyouofthereplace-
mentintervals.

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
meet
theU.S.FederalMotorVehicleStand-
ard(FMVSS)116DOT4,Class6.

@Note
—IfthebrakefluidlevelisabovetheMAX
marking,brakefluidmayleakoutoverthe
edgeofthereservoirandresultindamage
tothevehicle.
—Donotallowanybrakefluidto comeinto
contactwiththevehiclepaint,becauseit
willcorrodethepaint.
Electricalsystem
Ifthe=or[ax]indicatorlightturnson,thereisa
malfunctioninthegenerator,thebattery,orthe
vehicleelectricalsystem.
=Electricalsystem:malfunction!Safelystop
vehicle
Donotcontinuedrivingandswitchtheengineoff
=>AX.SeeanauthorizedAudidealerorauthorized
AudiServiceFacilityforassistance.
=Electricalsystem:malfunction!Restartnot
possible.PleasecontactService
Itwillnot bepossibletorestarttheengineonce
youturnitoff.Vehiclefunctions/drivingstability
maybelimited.DrivetoanauthorizedAudideal-
erorauthorizedAudiServiceFacilityimmediate-
ly.
=Electricalsystem:malfunction!Pleasecon-
tactService
Switchoffallelectricalequipmentthatisnot
needed.Vehiclefunctions/drivingstabilitymay
belimited.DrivetoanauthorizedAudidealeror
authorizedAudiServiceFacilityimmediately.
=Electricalsystem:lowbatterycharge.Bat-
tery
willbechargedwhiledriving
Thestartingabilitymaybeimpaired.
Ifthismessageturnsoffafteralittlewhile,the
vehiclebatteryhaschargedenoughwhiledriving.
Ifthismessagedoesnotturnoff,driveimmedi-
atelytoanauthorizedAudidealerorauthorized
AudiServiceFacility.

ZA\WARNING
Whenthereisanelectricalsystemmalfunc-
tion,vehiclefunctionsmaynotworkanddriv-
ingstabilitymaybelimited,whichincreases
theriskofanaccident.Stopdrivingand
switchtheengineoff.SeeanauthorizedAudi
dealerorauthorizedAudiServiceFacilityfor
assistance.

321

CheckingandFilling

Battery
Peleeeees(el)
Becauseofthecomplexpowersupply,allworkon
batteriessuchasdisconnecting,replacing,etc.,
should only beperformedby anauthorizedAudi
dealerorauthorizedAudiServiceFacility>A\.
Multiplebatterieswithdifferenttechnologies
maybeinstalledinyourvehicle:
—Vehiclebattery(forexample,forstartingthe
engine,basicpowersupply)>page322,Lead
batteryor>page323,Otherbatterytypes
—Auxiliarybattery(forexample,forrecuperation
oroptionalequipment)>page323,Otherbat-
terytypes
Notrunningthevehicleforlongperiodsof
time
Thebatterywillgraduallydrainifthevehicle
doesnotrunforlongperiodsoftime.Toensure
thatthevehiclecanstillbestarted,theelectrical
equipmentwillbereducedorswitchedoff
=page151.Someconveniencefunctions,such
asinteriorlightingorpowerseatadjustment,
maynotbeavailableundercertaincircumstan-
ces.Theseconveniencefunctionswillbeavailable
againonceyouswitchtheignitiononandstart
theengine.
Evenwhenelectricalequipmentisswitchedoff,
theequipmentcanstilldrainthebatteryifthe
vehicleisnotdrivenforLongperiodsoftime.
Deepdrainingresultsinachemicalreactionthat
destroys
theinsideofthebattery.Thebattery
mustbechargedevery monthtopreventthis
=page323.ContactanauthorizedAudidealeror
authorizedAudiServiceFacilityformoreinfor-
mation.
Winteroperation
Coldweatherplaceshigherdemandsonthebat-
tery.Thisresultsinreducedstartingability.Have
thebatterycheckedbyanauthorizedAudidealer
orauthorizedAudiServiceFacilitybeforecold
weatherbegins.
322

ZAWARNING
—Allworkonthebatteryorelectricalsystem
inyourvehiclecanresultininjuries,chemi-
calburns,accidents,or burns.Becauseof
this,allworkmustbeperformedonlybyan
authorizedAudidealerorauthorizedAudi
ServiceFacility.
—Neverconnectthechargingcableorjump
startcabledirectlytoyourvehiclebattery.
Onlyusethe connectionsintheenginecom-
partment>page323.


ZA\WARNING
CaliforniaProposition65Warning:
—Batteryposts,terminalsandrelatedacces-
soriescontainleadandleadcompounds,
chemicalsknowntotheStateofCalifornia
tocausecancerandreproductiveproblems.
Washhandsafterhandling.

C)Note
—Ifthevehiclewillbe parkedforlongperiods
oftime,protectthebatteryagainstthecold
sothatitwillnot be destroyed by“freezing”
=>page323,Chargingthebattery.
—Thereareelectricalcomponentsunderthe
cargofloorbehindatrimpanelthatwarm
upduringoperation.To reducetheriskof
thecomponentsoverheating, donotstore
objectssuchasblanketsunderthecargo
floor.Ifthecomponentsoverheat,theywill
switchofftemporarily.Thiswillbeindicated
byamessagethatwillbedisplayedinthe
instrumentclusteruntilthetemperaturere-
turnstonormal.
Leadbattery
Explanationofwarnings:

©Alwaysweareyeprotection.

Batteryacidishighlycorrosive.Always
wearprotectiveglovesandeyeprotection.


forbidden.>

®Fire,sparks,openflame,andsmokingare