Pressure AUDI S4 2019 Owner's Manual

CheckingandFilling

engine.Ifthishappens,onlyusewaterand
restorethecorrectmixtureratiowiththe
specifiedcoolantadditiveassoonaspossi-
ble.
—Onlyrefillwithnewcoolant.
—Radiatorsealantmustnot bemixedwith
thecoolant.
Addingcoolant

©=FeRAZ-0540


MIN

Fig.258Enginecompartment-coolantexpansiontank
(diagram):@coverwithreleasebutton;2)markings
Observethesafetyprecautions>page309,
Workingintheenginecompartment.
Checkingtheenginecoolantlevel
>Parkthevehicleonalevelsurface.
>Switchtheignitionoff.
>Readthecoolantlevelonthecoolantexpansion
tank>page311,fig.256.Thecoolantlevel
mustbebetweenthemarkings@)>fig.258
whentheengineiscold.Whentheengineis
warmitcanbeslightlyabovetheupper mark-
ing.
Addingcoolant
>Allowtheenginetocool.
> Placealarge,thicktowelonthecoolantexpan-
siontankcover.
>Pushthereleasebutton(@)9fig.258onthe
capandcarefullyturnittotheleftuntilyou
feelresistance>/\.
>Pushthereleasebuttonagainandremovethe
capcompletely.
>Makesurethatthefluidlevelremainsstable.
Add morecoolantifnecessary.
>
Turn thecaptotherighttotightenituntilyou
feelresistanceasecondtime.
316
Coolantlossusuallyindicatesthatthereisaleak.
Immediatelydriveyourvehicletoanauthorized
AudidealerorauthorizedAudiServiceFacility
andhavethecoolingsysteminspected.Ifthe
coolingsystemisnotleaking,coolantlosscanre-
sultfromthecoolantboilingdueoverheating
andthenbeingforcedoutofthecoolingsystem.

ZA\WARNING
— Theenginecompartmentinanyvehiclecan
beadangerousarea.Stoptheengineandal-
lowitto coolbeforeworkingintheengine
compartment.Alwaysfollowtheinforma-
tionfoundin>page309,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.

Wheels

@USDOTnumber(TIN)and
manufacturedate
Themanufacturedateislistedon
thetiresidewall(itmayonlyap-
pearontheinnersideofthetire):
DOT...2218...
means,forexample,thatthetire
wasproducedinthe22ndweekof
theyear2018.
@)AudiOriginalTires
AudiOriginalequipmenttires
withthedesignation“AO”have
beenspeciallymatchedtoyour
Audi.Whenusedcorrectly,these
tiresmeetthehigheststandards
forsafetyandhandling.Anau-
thorizedAudidealerorauthor-
izedAudiServiceFacilitywillbe
abletoprovideyouwithmorein-
formation.
@)Mudandsnowcapability
“M/S”or“M+S”indicatesthetire
issuitablefordrivingonmudand
snow./A\indicatesawintertire.
Compositionofthetirecord
andmaterials
Thenumberofpliesindicatesthe
numberofrubberizedfabriclay-
ersinthetire.Ingeneral:the
morelayers,themoreweighta
tirecancarry.Tiremanufacturers
324
mustalsospecifythematerials
usedinthetire.Theseinclude
steel,nylon,polyesterandother
materials.
@)Maximumpermittedload
Thisnumber indicatesthemaxi-
mumloadinkilogramsand
poundsthatthetirecancarry.
@Uniformtirequalitygrade
standardsfortreadwear,
tractionandtemperature
resistance
Treadwear,tractionand tempera-
tureranges>page339.
@Runningdirection
Thearrowsindicatetherunning
directionofunidirectionaltires.
Youmustalwaysfollowthespeci-
fiedrunningdirection
>page354.
Maximumpermitted
inflationpressure
Thisnumber indicatesthemaxi-
mumpressuretowhichatirecan
beinflatedundernormaloperat-
ingconditions.

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Glossaryoftireandloading
terminology
Accessoryweight
meansthecombinedweight(in
excessofthosestandarditems
whichmaybereplaced)ofauto-
matictransmission,powersteer-
ing,powerbrakes,powerwin-
dows,powerseats,radio,and
heater,totheextentthatthese
itemsareavailableasfactory-in-
stalledequipment(whetherin-
stalledornot).
Aspectratio
meanstheratioofthe heightto
thewidthofthetireinpercent.
Numbersof55orlowerindicatea
lowsidewallforimprovedsteer-
ingresponseandbetteroverall
handlingondrypavement.
Bead
meansthepartofthetirethatis
madeofsteelwires,wrappedor
reinforcedbyplycordsandthatis
shapedtofittherim.
Beadseparation
meansabreakdownofthebond
betweencomponentsinthebead.
Cord
meansthestrandsformingthe
pliesinthetire.
Coldtireinflationpressure
meansthetirepressurerecom-
mendedbythevehiclemanufac-
turerforatireofadesignated
sizethathasnotbeendrivenfor
morethanacoupleofmiles(kilo-
meters)atlowspeedsinthethree
hourperiodbeforethetirepres-
sureismeasuredoradjusted.
Curbweight
meanstheweightofamotorve-
hiclewithstandardequipmentin-
cludingthemaximumcapacityof
fuel,oil,andcoolant,aircondi-
tioningandadditionalweightof
optionalequipment.
Extraloadtire
meansatiredesignedtooperate
athigherloadsandathigherin-
flationpressuresthanthecorre-
spondingstandardtire.Extraload
tiresmaybeidentifiedas“XL”,
“xL’,“EXTRALOAD”,or“RF”on
thesidewall.
325

Wheels

GrossAxleWeightRating
(“GAWR”)
meanstheload-carryingcapacity
ofasingleaxlesystem,measured
atthetire-groundinterfaces.
GrossVehicleWeightRating
(“GVWR”)
meansthemaximumtotalloaded
weightofthevehicle.
Groove
meansthespacebetweentwoad-
jacenttreadribs.
Loadrating(code)
meansthemaximumloadthata
tireisratedtocarryforagivenin-
flationpressure.Youmaynotfind
thisinformationonalltiresbe-
causeitisnotrequiredbylaw.
Maximumloadrating
meanstheloadratingforatireat
themaximumpermissibleinfla-
tionpressureforthattire.
Maximumloadedvehicle
weight
meansthesumof:
(a)Curbweight
(b)Accessoryweight
(c)Vehiclecapacityweight,and
(d)Productionoptionsweight
326
Maximum(permissible)
inflationpressure
meansthemaximumcoldinfla-
tionpressuretowhichatiremay
beinflated.Alsocalled“maxi-
muminflationpressure.”
Normaloccupantweight
means150lbs.(68kilograms)
timesthenumberofoccupants
seatedinthevehicleuptotheto-
talseatingcapacity ofyourvehi-
cle.
Occupantdistribution
meansdistributionofoccupants
inavehicle.
Outerdiameter
meanstheoveralldiameterofan
inflatednewtire.
Overallwidth
meansthelineardistancebe-
tweentheexteriorsoftheside-
wallsofaninflatedtire,including
elevationsduetolabeling,deco-
rations,orprotectivebandsor
ribs.
Ply
meansalayerofrubber-coated
parallelcords.

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Productionoptionsweight
meansthecombinedweightof
thoseinstalledregularproduction
optionsweighingover5lbs.
(2.3kg)inexcessofthosestand-
arditemswhichtheyreplace,not
previouslyconsideredincurb
weightoraccessoryweight,in-
cludingheavy dutybrakes,ride
levelers,roofrack,heavyduty
battery,andspecialtrim.
Radialplytire
meansapneumatictireinwhich
theplycordsthatextendtothe
beadsarelaidatsubstantially
90degreestothecenterlineof
thetread.
Recommendedinflation
pressure
see>page325,Coldtireinfla-
tionpressure.
Reinforcedtire
meansatiredesignedtooperate
athigherloadsandathigherin-
flationpressuresthanthecorre-
spondingstandardtire.Rein-
forcedtiresmaybeidentifiedas
“XL”,“xl”,“EXTRALOAD”,or“RF”
onthesidewall.
Rim
meansametalsupportforatire
oratireandtubeassemblyupon
whichthetirebeadsareseated.
Rimdiameter
meansnominaldiameterofthe
beadseat.Ifyouchangeyour
wheelsize,youwillhavetopur-
chasenewtirestomatchthenew
rimdiameter.
Rimsizedesignation
meansrimdiameterandwidth.
Rimwidth
meansnominaldistancebetween
rimflanges.
Sidewall
meansthatportionofatirebe-
tweenthetreadandbead.
Speedrating(lettercode)
meansthespeedatwhichatireis
designedtobedrivenforextend-
edperiodsoftime.Theratings
rangefrom93mph(150km/h)
to186mph(298km/h)>table
onpage323.Youmaynotfind
thisinformationonalltiresbe-
causeitisnotrequiredbylaw.
Thespeedratinglettercode,
whereapplicable,ismoldedon
thetiresidewallandindicatesthe>
327

Wheels

maximumpermissibleroad
speeds.Seealso>AinGeneral
informationonpage322.
Tirepressuremonitoring
system
meansasystemthat detects
whenoneormoreofavehicle's
tiresareunderinflatedandillumi-
natesalowtirepressurewarning
telltale.
Tread
meansthatportionofatirethat
comesintocontactwiththeroad.
Treadseparation
meanspullingawayofthetread
fromthetirecarcass.
Treadwearindicators(TWI)
meanstheprojectionswithinthe
principalgroovesdesignedtogive
avisualindicationofthedegrees
ofwearofthetread.See
=>page331,Treadwearindicator
formoreinformationonmeasur-
ingtirewear.
UniformTireQualityGrading
isatireinformationsystemdevel-
opedbytheUnitedStates Nation-
alHighwayTrafficSafetyAdminis-
tration(NHTSA)thatisdesigned
tohelpbuyersmakerelativecom-
328
parisonsamongtires.TheUTQGis
notasafetyratingandnotaguar-
anteethatatirewill lastfora
prescribednumberofmiles(kilo-
meters)orperforminacertain
way.Itsimplygivestirebuyers
additionalinformationtocom-
binewithotherconsiderations,
suchasprice,brandloyaltyand
dealerrecommendations.Under
UTQG,tiresaregradedbythetire
manufacturersinthreeareas:
treadwear,traction,andtempera-
tureresistance.TheUTQGinfor-
mationonthetires,moldedinto
thesidewalls.
U.S. DOTTireIdentification
Number(TIN)
Thisisthetire’s“serialnumber”.
Itbegins withtheletters“DOT”
andindicatesthatthetiremeets
allfederalstandards.Thenext
twonumbersorlettersindicate
theplantwhereitwasmanufac-
tured,andthelastfournumbers
representtheweekandyearof
manufacture.Forexample,
DOT...2218...
meansthatthetirewasproduced
inthe22ndweekof2018.The
othernumbersaremarketingco-
desthatmayormaynotbeused>

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Wheels

bythetiremanufacturer.Thisin-
formationisusedtocontactcon-
sumers
ifatiredefectrequiresa
recall.
Vehiclecapacityweight
meanstheratedcargoandlug-
gageloadplus150lbs.(68kilo-
grams)timesthevehicle'sdesig-
natedseatingcapacity.
Vehiclemaximumloadonthe
tire
meansthatloadonanindividual
tirethatisdeterminedbydistrib-
utingtoeachaxleitsshareofthe
maximumloadedvehicleweight
anddividingbytwo.
Vehiclenormalloadonthetire
meansthatloadonanindividual
tirethatisdeterminedbydistrib-
utingtoeachaxleitsshareofthe
curbweight,accessoryweight,
andnormaloccupantweight(dis-
tributedinaccordancewith>ta-
bleonpage334)anddividingby
two.
Occupantloadinganddistri-
butionforvehiclenormalload
forvariousdesignatedseating
capacities
Refertothetireinflationpressure
label>page332,fig.265forthe
numberofseatingpositions.Re-
fertothetable>tableon
page334forthenumberofpeo-
plethatcorrespondtothevehicle
normalload.
Newtiresorwheels
Audirecommendshavingallwork
ontiresorwheelsperformedby
anauthorizedAudidealerorau-
thorizedAudiServiceFacility.
Thesefacilitieshavethe proper
knowledgeandareequippedwith
therequiredtoolsandreplace-
mentparts.
>Newtiresdonotyethavethe
optimumgrippingproperties.
Drivecarefullyandatmoderate
speedsforthefirst350miles
(500km)withnewtires.
>Onlyusetireswiththesamede-
sign,size(rollingcircumfer-
ence),andas close tothesame
treadpatternas possibleonall
fourwheels.
>Donotreplacetiresindividually.
Atleastreplacebothtiresonthe
sameaxleatthesametime.
>Audirecommendsthatyouuse
AudiOriginalTires.Ifyouwould
liketousedifferenttires,please
notethatthetiresmayperform>
329

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Wheels



—Onlyusetiresthataremore—Inflationpressurethatistoolow
thansixyearsoldwhenabso-orhighcanincreasetirewear
lutelynecessaryanddriveconsiderably.
carefullywhendoingso.—Drivingquicklythroughcurves,
—Donotuserun-flattiresonrapidacceleration,andheavy
yourvehicle.Usingthemwhenbrakingincreasetirewear.
notpermittedcanleadtove-—HaveanauthorizedAudidealer
hicledamageoraccidents.orauthorizedAudiServiceFacili-
—Ifyouinstallwheelcoversontycheckthewheelalignmentif
thevehicle,makesuretheyal-thereisunusualwear.
lowenoughaircirculationto—Havethewheelsrebalancedifan
coolthebrakesystem.Iftheyimbalanceiscausingnoticeable
donot,thiscouldincreasethevibrationinthesteeringwheel.
riskofanaccident.Ifyoudonot,thetiresandother
vehiclecomponentscouldwear
Tirewearanddamagemorequickly.

Treadwearindicator
Originalequipmenttirescontain
treadwearindicatorsinthetread
pattern,whicharebarsthatare
1/16in(1.6mm)highandare
spacedevenlyaroundthetireper-
Fig.263Tireprofile:creaniweneacependiculartotherunningdirec-
tortion>fig.263.Theletters“TWI”
Tirewearortrianglesonthetiresidewall
indicatethelocationofthetread-
Checkthetiresregularlyforwear.wearindicators.
Thetireshavereachedthemini-
mumtreaddepth!)whenthey>

DObeyanyapplicableregulationsinthe
country
wherethevehicleisbeingoper-
ated.
331

Wheels

haveworndowntothetreadwear
indicators.Replacethetireswith
newones>A.
Tirerotation
Rotatingthetiresregularlyisrec-
ommendedtoensurethetires
wearevenly.Torotatethetires,
installthetiresfromtherearaxle
onthefrontaxleandviceversa.
Thiswillallowthetirestohave
approximatelythesamelengthof
servicelife.
Forunidirectionaltires,makesure
thetiresareinstalledaccordingto
therunningdirectionindicatedon
thetiresidewall>page354.
Hiddendamage
Damagetotiresandrimscanof-
tenoccurinlocationsthatarehid-
den.Unusualvibrationsintheve-
hicleorpullingtoonesidemay
indicatethatthereistiredamage.
Reduceyourspeedimmediately.
Checkthetiresfordamage.Ifno
damageisvisiblefromtheout-
side,driveslowlyandcarefullyto
thenearestauthorizedAudideal-
erorauthorizedAudiServiceFa-
cilitytohavethevehicleinspect-
ed.
332

Z\WARNING
Treadthathasworntoolowor
uneventreaddepthsonthe
tirescanreducedrivingsafety.
Thiscanincreasetheriskofan
accidentbecauseithasanega-
tiveeffectonhandling,driving
throughcurves,andbraking,
andbecauseitincreasesthe
riskofhydroplaningwhendriv-
ingthroughdeeppuddles.
SUTcwyee)
ef)




B8W-0152

Fig.264Driver'ssideB-pillar:tirepres-
surelabel


B8K-1151
SEATINGCAPACITYTOTALpyFRONTa)0NOMBREDEPLACESTOTALAVANTARRIEREa2Fr
19OFpmbs.xoou
TIRESIZE
PNEU_|DIMENSIONS
FRONT
AVANT,MaKPA,MMPSI
REAR
ARRIEREaKPA,MlPSI
‘SPARE
DESECOURSllKPA,MlPSI
COLDTIREPRESSURE
PRESSIONDESPNEUSAFROID





Fig.265Tirepressurelabel
Thecorrecttirepressurefortires
installedatthefactoryislistedon
alabel.Thelabelislocatedonthe>

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Wheels

B-pillar(driver'sside)>fig.264,
>fig.265.Thelocationmayvary
dependingonthemodel.
Usethetirepressurespecifiedfor
anormalvehicleloadwhenthe
vehicleispartiallyloaded>table
onpage334.Ifdrivingthevehi-
clewhenfullyloaded,youmust
increasethetirepressuretothe
maximumspecifiedpressure>A.
Checkingandcorrectingtire
pressure
>Checkthetirepressureatleast
oncepermonthandalsocheckit
beforeeverylongdrive.
>Alwayscheckthetirepressure
whenthetiresarecold.Donot
reducethepressureifitincreas-
eswhenthetiresarewarm.
>Checkthelabel>fig.265for
thecorrecttirepressurebased
onvehicleload.
>Correctthetirepressureifnec-
essary.
>Storethenewtirepressurein
theInfotainmentsystem
>page341.
>Checkthepressureinthespare
tire(compactsparetire)*.Al-
waysmaintainthemaximum
temperaturethatisspecifiedfor
thetire.


Z\WARNING
Alwaysadaptthetirepressure
toyourdrivingstyleandtheve-
hicleload.
—Overloadingcanleadtolossof
vehiclecontrolandincrease
theriskofanaccident.Read
and
followtheimportantsafe-
typrecautionsin>page335,
Tiresandvehicleloadlimits.
—Thetiremustflexmoreifthe
tirepressureistooloworif
thevehiclespeedor loadare
toohigh.Thisheatsthetireup
toomuch.Thisincreasesthe
riskofanaccidentbecauseit
cancausethetiretoburstand
resultinlossofvehiclecon-
trol.
—Incorrecttirepressureincreas-
estirewearandhasanegative
effectondrivingandbraking
behavior,whichincreasesthe
riskofanaccident.

()Note
Replacelostvalvecapstore-
ducetheriskofdamagetothe
tirevalves.
333