2019 AUDI A4 warning light

8W0012721BG
Assistsystems



Analoginstru-|AudivirtualMeaningon
mentcluster|cockpit/head-|thecorre-
updisplay*spondingside
Greenline(s)|Greenline(s)|Activelaneas-
(left/right)(left/right)sistisactivat-
21Xedandready
toprovide
warnings.
“RedlineActivelaneas-
(left/right)sistwillwarn
1Xyoubefore the
vehicleleaves
a lane.The
steeringwheel
willalsovi-
bratelightly.


Yellowline(s)
(left/right)
7%

Yellowline(s)
(left/right)
71%

Activelaneas-
sistisactivat-
ed,butisnot
readytopro-
videwarnings.

Ifthesystemisswitchedonbutisnotreadyto
providewarnings,oneofthefollowingcouldbe
thecause:
—Thereisnolane markerline
—Therelevant lane markerlinesarenotdetected
(forexample,markingsinaconstructionzone
orbecausetheyareobstructedbysnow,dirt,
waterorlighting)
—Thevehiclespeedisbelowtheactivationspeed
ofapproximately40mph(65km/h)
—Thelaneistoonarrowortoowide
—Thecurveistoonarrow
—Thedriver'shandsarenotonthesteering
wheel
@Tips
—Makesurethecamerawindow>fig.116is
notcoveredbystickersorotherobjects.For
informationoncleaning,see>page342.
—Ifthesystemisreadyforoperation,itwill
remainreadyeachtimeitisswitchedon)).


DIncertaincountries
Displayintheinstrumentcluster
Appliesto:vehicleswithAudiactivelaneassist
Pee
ry2Sg
|
== a
Fig.117Instrumentcluster(multi-colordisplay):active
laneassistisswitchedonandreadytoprovidewarnings
B8W-0099
Fig.118Instrumentcluster(monochromedisplay):active
laneassistisswitchedon
YoucanopenuptheDriverassistancedisplayfor
theactivelaneassistusingthemultifunction
steeringwheelbuttons>page15.
Anadditionalindicatorappearsinthehead-up
display”.
Multi-ColorDisplay
See>fig.117
119

Assistsystems


Driverassistance
displayinthein-
strumentcluster
Meaningonthecorre-
spondingside

Greenline(s)Activelaneassistisacti-

(leftorright)vatedandreadytopro-
videwarnings.
RedlineActive laneassistwill
(leftorright)warnyoubeforethevehi-
cleleavesa lane.The
steeringwheelwillalso
vibratelightly.

Grayline(s)
(leftorright)

Activelaneassistisacti-
vated,butisnotreadyto
providewarnings.

Monochromedisplay
See>fig.118

Driverassistance
displayinthein-
strumentcluster
Meaningonthecorre-
spondingside

Lightgrayline(s)
(leftorright)
Activelaneassistisacti-
vatedandreadytopro-
videwarnings.

Blinkingline(s)
(leftorright)
Activelaneassistwill
warnyoubeforethevehi-
cleleavesa lane.The
steeringwheelwillalso
vibratelightly.

Darkgrayline(s)
(leftorright)

Activelaneassistisacti-
vated,butisnotreadyto
providewarnings.

Messagesintheinstrumentclusterdisplay
Iftheactivelaneassistswitchesoffautomatical-
ly,theindicatorlightinthedisplayturnsoffand
oneofthefollowingmessagesappears:
xqAudiactivelaneassist:malfunction!See
owner'smanual
DrivetoanauthorizedAudidealerorauthorized
AudiServiceFacilityimmediatelytohavethe
malfunctioncorrected.
Audiactivelaneassist:currentlyunavaila-
ble.Cameraviewrestrictedduetosurround-
ings.Seeowner'smanual
120
Thismessageappearsifthecameraisunableto
detectthelines.Thiscouldhappenif:
—Thecamerafieldofview>page118,fig.116is
dirtyorcoveredinice.Cleanthisareaonthe
windshield>page342.
—Thecamerafieldofviewisfoggedover.Wait
untilthe foghasclearedbeforeswitchingthe
activelaneassistonagain.
—Thesystemhasbeenunabletodetectthelanes
foranextendedperiodoftimeduetoroad con-
ditions.Switchactivelaneassistbackonwhen
thelinesaremorevisible.
Audiactivelaneassist:currentlyunavaila-
ble.Seeowner'smanual
Thereisatemporarymalfunctionthatmaypre-
vent theactivelaneassistfromswitchingon. Try
switchingtheactivelaneassistonagainlater.
Audiactivelaneassist:Pleasetakeover
steering!
Thismessageappearsifyouarenotsteeringby
yourself.Activelaneassistisactivated,butisnot
readytoprovidewarnings.

Z\WARNING
Notethatmessagesmaybedelayedornot
displayedonvehicleswithaccessoriesmount-
edonthesteeringwheel,suchasasteering
wheelspinnerknob.Alwayskeep yourhands
onthesteeringwheel.

Adjustingthesteeringtimeandvibration

warning
Appliesto:vehicleswithAudiactivelaneassist
Youcanadjustindividualactivelaneassistset-
tingsintheInfotainmentsystem.

>SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle>leftcontrolbutton>Driveras-
sistance>Audiactivelaneassist.

Steeringtime
Early:inthissetting,thecorrectivesteeringhap-
penscontinuouslytohelpkeepthevehicleinthe
centerofthelane.

Assistsystems

@Tips
—Youcancanceltheautomaticbrakeactiva-
tionwithincreasingbrakingforceifyouap-
plythe brakesyourselforaccelerateconsid-
erably.
—Insomesituations,rearcross-trafficassist
maywarnyouevenifthereisnocrosstraffic
ina criticalarea,forexamplewhenbacking
into aparkingspaceormaneuvering.
—Therearcross-trafficassistalsoswitchesoff
whenyouswitchofftheESC.
—Foranexplanationonconformitywiththe
FCCregulationsinthe UnitedStatesandthe
IndustryCanadaregulations,see
=>page370.
Appliesto:vehicleswithAudisideassist
Amessageappearsintheinstrumentclusterdis-
playifthesideassistswitchesoffautomatically.
8Audisideassist:malfunction!Pleasecontact
Service
8Audisideassistandexitwarning:malfunc-
tion!PleasecontactService
Thesystemcannotguaranteethatitwilldetect
vehiclescorrectlyandithasswitchedoff.The
sensorshavebeenmovedorarefaulty.Havethe
systemcheckedbyanauthorizedAudidealeror
authorizedAudiServiceFacilitysoon.
Audisideassist:currentlyunavailable.Sen-
sorvisionrestrictedduetosurroundings.See
owner'smanual
Audisideassistandexitwarning:currently
unavailable.Sensorvisionrestrictedduetosur-
roundings
Theradarsensorvisionisimpaired.Theareain
frontofthesensorsmustnot becoveredbybike
racks,stickers,leaves,snoworanyotherobjects.
Cleantheareacoveringthesensors,ifnecessary
=>page122,fig.122.
Audisideassist:currentlyunavailable.See
owner'smanual
126
Audisideassistandexitwarning:currently
unavailable.Seeowner'smanual
Sideassistcannotbe switchedonatthistimebe-
causethereisamalfunction(forexample,the
batterychargelevelmaybetoolow).
Rearparkingaid:obstacledetectionrestrict-
ed
Therearcross-trafficassistisnotavailable.Ei-
thertheESCisswitchedoff,ortheradarsensors
maybecoveredbyabikerack,stickers,leaves,
snoworotherobjects.SwitchtheESCon,or
cleantheareainfrontofthesensorsifnecessary
=>page122,fig.122.Ifthismessagecontinues
tobedisplayed,driveimmediatelytoanauthor-
izedAudidealerorauthorizedAudiServiceFacili-
tytohave themalfunctionrepaired.
Audidriveselect
Introduction
Appliesto:vehicleswithAudidriveselect
Driveselectmakesitpossibletoexperiencedif-
ferenttypesofvehiclecharacteristicsinonevehi-
cle.ThedrivercanselectOffroad*,Comfort,Au-
toandDynamicmodesintheInfotainmentsys-
temtoswitchbetweenasportyandacomforta-
bledrivingmode,forexample.IntheIndividual
mode,thesettingscan beadjustedtoyourper-
sonalpreferences.Thismakesitpossibletocom-
bine settingssuchasasportyenginesettingwith
lightsteering.
Appliesto:vehicleswithAudidriveselect
Thefollowingsystems,amongotherthings,are
influencedbydriveselect:
Engineandautomatictransmission*
Dependingonthemode,theengineandauto-
matictransmission*respondmorequicklyorina
morebalancedmannertoacceleratorpedal
movements.InthesportyDynamicmode,the
transmissionshiftsathigherspeedranges.

8W0012721BG
Parkingaid

Parkingaid
Generalinformation
Appliesto:vehicleswitharearparkingsystem/parkingsys-
templus/rearviewcamera/peripheralcameras
Dependingonyourvehicle'sequipment,various
parkingaidswillhelpyouwhenparkingandma-
neuvering.
Therearparkingsystemisanaudible parkingaid
thatwarnsyouofobstaclesbehindthevehicle
=>page130.
Theparkingsystemplusassistsyouwhilepark-
ingbyaudiblyandvisuallywarningyouofobjects
detectedinfrontofandbehindthevehicle
=>page130.
Therearviewcamerashowstheareabehindthe
vehicleintheInfotainmentsystemdisplay.The
linesintherearviewcameraimagehelpyouto
parkormaneuver>page132.
Theperipheralcamerasgivevariousviewsto
helpyouwhenparkingormaneuvering
=page133.Theparkingsystemplusfunctions
arealsoavailable>page130.

ZAWARNING
—Alwayslookfortrafficandcheckthearea
aroundyourvehiclebylookingatitdirectly
aswell.Theparkingsystemcannotreplace
thedriver'sattention.Thedriverisalways
responsiblewhenenteringorexitingapark-
ingspaceandduringsimilarmaneuvers.
—Pleasenotethatsomesurfaces,suchas
clothing,arenotdetectedbythesystem.
—Sensorsandcamerashaveblindspotsin
whichpeopleandobjectscannotbedetect-
ed.Beespeciallycautiousofsmallchildren
andanimals.
—Alwayskeepyoureyesonthevehicle'ssur-
roundings,usingtherearviewmirroraswell.
— Thesensorscanbedisplacedbyimpactsor
damagetotheradiatorgrille,bumper,
wheelhousingandtheunderbody.Thepark-
ingsystemmaybeimpairedasaresult.
HaveanauthorizedAudidealerorauthor-
izedAudiServiceFacilitychecktheirfunc-
tion.

C@)Note
—Someobjectsarenotdetectedordisplayed
bythesystemundercertaincircumstances:
—objectssuchasbarrierchains,trailerdraw
bars,verticalpolesorfences
—objectsabovethesensorssuchaswallex-
tensions
—objectswithcertainsurfacesorstructures
suchaschainlinkfencesorpowdersnow
—Ifyoucontinuedrivingclosertoalowob-
ject,itmaydisappearfromthe sensor
range.NotethatyouwillnoLongerbe
warnedaboutthisobstacle.
—Maintainenoughdistancefromthecurbto
reducetheriskofdamagetotherims.
@)Tips
—The systemmayprovideawarningeven
thoughtherearenoobstaclesinthecover-
ageareainsomesituations,suchas:
—certainroadsurfacesor whenthereistall
grass
—externalultrasonicsourcessuchasfrom
cleaningvehicles
—inheavyrain,snow,orthickvehicleex-
haust
—Werecommendthatyoupracticeparkingin
atraffic-freelocationorparkinglotto be-
come
familiarwiththesystem.Practice
parkingingoodlightand weathercondi-
tions.
—Youcanchangethevolumeofthesignals
andthedisplay>page136.
—Whatappearsintheinfotainmentdisplayis
somewhattime-delayed.
—Thesensorsmustbekeptcleanandfreeof
snowandicefortheparkingaidtooperate.
—Appliesto:vehicleswithrearwindowwiper:
Therearviewcamerawillbecleanedwith
therearwindow>page53.
129

IntelligentTechnology

IntelligentTechnology
ElectronicStabilization
Control(ESC)
ElectronicStabilizationControl(ESC)supports
driversafety.Itreducestheriskofslippingand
improvesdrivingstability.ESCdetectscriticalsit-
uations,suchasifthevehicleisoversteeringor
understeering,orifthewheelsare spinning.The
brakesareappliedortheenginetorqueisre-
ducedinordertostabilizethevehicle.Whenthe
ESCengages,theBindicatorlightflashesinthe
instrumentcluster.
ThefollowingsystemsareintegratedintheESC:
Anti-lockbrakingsystem(ABS)
ABSpreventsthewheelsfromlockingwhenbrak-
ing.Thevehiclecanstillbesteeredevenduring
hardbraking.Applysteadypressuretothebrake
pedal.Donotpumpthepedal.Apulsinginthe
brakepedalindicatesthatthesystemisacting to
stabilizethevehicle.
Brakeassistsystem
Thebrakeassistsystemcandecreasebrakingdis-
tance.Itincreasesbrakingpowerwhenthe driver
pressesthebrakepedalquicklyinemergencysit-
uations.Youmustpressandholdthebrakepedal
untilthedangeroussituationisover.Invehicles
withadaptivecruisecontrol*,thebrakeassist
systemismoresensitiveifthedistancedetected
tothevehicledrivingaheadistoosmall.
Anti-SlipRegulation(ASR)
ASRreducesenginepowerwhenthedrivewheels
beginspinningandadaptstheforcetotheroad
conditions.Thismakesiteasiertostart,acceler-
ateanddriveuphills.
ElectronicDifferentialLock(EDL)
TheEDLappliesthe brakestowheelsthatare
slippingandtransfersthedrivepowertotheoth-
erwheels.Thisfunctionisnotavailableathigher
speeds.
138
Inextremecases,EDLautomaticallyswitchesoff
tokeepthebrakeonthebrakedwheelfromover-
heating.Thevehicleisstillfunctioningcorrectly.
EDLwillswitchonagainautomaticallywhencon-
ditionshavereturnedtonormal.
Powersteering
The ESCcanalsosupportvehiclestability
throughsteering.
Selectivewheeltorquecontrol
Selectivewheeltorquecontrolisusedwhendriv-
ingoncurves.Brakingistargetedtowardthe
wheelsontheinsideofthecurveasneeded.This
allowsmoreprecisedrivingincurves.
Automaticpost-collisionbrakingsystem
The“automaticpost-collisionbrakingsystem”
canhelptoreducetheriskofslidingandofaddi-
tionalcollisionsafteranaccident.Iftheairbag
controlmoduledetectsacollision,thevehicleis
braked bytheESC.
Thevehicledoesnotbrakeautomaticallyifoneof
thefollowingoccurs:
—Thedriverpressestheacceleratorpedal
—TheESC,thebrakesystem,orthevehicleelec-
tricalsystemisnotfunctioning

ZAWARNING
— The ESCanditsintegratedsystemscannot
overcomethelimitsimposedbynatural
physicallaws.Thisisespeciallyimportanton
slipperyorwetroads.Ifthesystemsbegin
actingtostabilizeyourvehicle,youshould
immediatelyalteryourspeedtomatchthe
roadandtrafficconditions.Donotletthein-
creasedsafetyprovidedtemptyouintotak-
ingrisks.Thiscouldincreaseyourriskofa
collision.
—Pleasenotetheriskofacollisionincreases
whendrivingfast,especiallythroughcurves
andonslipperyorwetroads,andwhendriv-
ingtooclosetoobjectsahead.The ESC and
itsintegratedsystemscannotalwayspre-
ventcollisions-thereisstillariskofacci-
dents!

8W0012721BG
IntelligentTechnology


—Presstheacceleratorpedalcarefullywhen
acceleratingonsmooth,slipperysurfaces
suchasiceandsnow.Thedrivewheelscan
spinevenwhenthesecontrolsystemsarein-
stalledandthiscanaffectdrivingstability
andincreasetheriskofacollision.

@)Tips
— TheABSandASRonlyfunctioncorrectly
whenallfourwheelshaveasimilarwear
condition.Differenttiresizescanleadtoa
reductioninenginepower.
—Youmayhearnoiseswhenthesystemsde-
scribedareworking.
Switchingon/off
ESCturnsonautomaticallywhenyoustarttheengine.
2
gz
=& a

Fig.145CenterconsolewithbuttonRor
TheESCisdesignedtofunctioninlevels.Depend-
ingonthelevelthatisselected,thestabilization
functionoftheESCwillbelimitedorswitched
off.Theamountofstabilizationcontrolwilldiffer
dependingonthelevel.
Thefollowingsituationsareexceptionswhereit
maybeuseful toswitchonsportmode(sedan)or
offroadmode(allroad)toallowthewheelsto
spin:
—Rocking thevehicletofreeitwhenitisstuck
—Drivingindeepsnoworonlooseground
—Drivingwithsnowchains
—Appliesto:allroad:drivingonroughterrain
whenmuchofthecar'sweightisliftedoffthe
wheels(axlearticulation)
—Appliesto:allroad:drivingdownhillwhilebrak-
ingonlooseground
Foryoursafety,switchthesportmode/offroad
modeoffinadvance.






ESClevels
Appliesto:sedan
SportmodeonESC/ASRoffSportmodeoffor
ESC/ASRon
BehaviorThe ESC andASRstabiliza-|Thestabilizationfunctionis|Thefullstabilizationfunc-
tionfunctionsarelimitednotavailable>A\.ESCand_|tionoftheESC andASRis
oA.ASRareswitchedoff.availableagain.
OperatingPressthe[2OFF]buttonPressandholdthe|&OFFPressthe[2OFF]button
briefly.buttonlongerthan3sec-again.
onds.
IndicatorBiturnson.BancRdturnon.BaiturnsofforEJand
lightsaaturnoff.
MessagesStabilizationcontrol(ESC):|Stabilizationcontrol(ESC):|Stabilizationcontrol
sport.Warning!Restricted|off.Warning!Restricted(ESC):on
stability stability

139

IntelligentTechnology

Appliesto:allroad










Youshouldonlyswitchsportmode/offroad
modeonorswitchESC/ASRoffifyourdriving
abilitiesandroadconditionspermit.
—Thestabilizationfunctionislimitedwhen
sportmode/offroadmodeisswitchedon.
Thedrivingwheelscouldspinandthevehi-
clecouldswerve,especiallyonslickorslip-
peryroadsurfaces.
—Thereisnovehiclestabilizationwhen
ESC/ASRareswitchedoff.
Hilldescentassist
Appliesto:allroad

Hilldescentassistmakesitpossibletodrive
downahillataconstantspeed.
a
Q
gz
=& a

Fig.146Centerconsole:hilldescentassistbutton

>Toswitchhilldescentassiston,presstheL@
button.TheLEDinthebuttonwillturnon.
>»Pressthebuttonagaintoswitchitoff.The LED
inthe buttonturnsoff.

140
OffroadmodeonESC/ASRoffOffroadmodeoffor
ESC/ASRon
BehaviorThe ESC andASRstabiliza-|Thestabilizationfunctionis|Thefullstabilizationfunc-
tionfunctionsarelimitednotavailable>A\.ESCand__|tionoftheESCandASRis
DSA.ASRareswitchedoff.available again.
Operating|Pressthe|#°*]buttonbriefly.|Pressandholdthe||but-|Pressthe|#°"|buttonagain.
tonlongerthanthreesec-
onds.
IndicatorEgiturnson.ElandSaturnon.Eaiturnsoffor[gjand
lightsEaturnoff.
Messages|Stabilizationcontrol(ESC):|Stabilizationcontrol(ESC):|Stabilizationcontrol(ESC):
offroad.Warning!Reduced|off.Warning!Restrictedon
stability stability
AWARNINGHilldescentassistbrakesallfourwheelsauto-
maticallyinordertolimitspeedwhendrivingei-
therforwardorreverseonhillswithagradefrom
approximately6to60%.Thewheelswillnotlock
upbecausetheABSremainsactivated.Invehi-
cleswithamanualtransmission,thehillholdas-
sistadjuststothespecifiedspeedso thattheen-
gineisnot brakedbelowitsidlespeed.
Whenhilldescentassistison,thespeedyourve-
hiclewastravelingwhenitentered thehillis
maintained.Itisonlypossible toswitchonthe
assistwhendrivingslowerthan37mph(60
km/h).Theassistbeginsshortlyafteryoustart
drivingandcontinuesuptoapproximately
19mph(30km/h).Invehicleswithamanual
transmission,regulationbelowapproximately6
mph(9km/h)isonlypossibleiftheclutchpedal
ispressedorifthegearshiftisintheneutralposi-
tion.Iftheclutchpedalisreleasedwhenagearis
engagedbelowapproximately6mph(9km/h),
the regulatedspeedwillincrease.Thedrivercan
increaseordecreasethevehiclespeedwithin
theselimitsbypressingtheacceleratororbrake
pedal.
However,theremustbeenoughtraction.Hillde-
scentassistcannotfunctionasexpected,iffor
examplethehillisicyorifthesurfaceisloose
SA.
Activeregulationofaspeeduptoapproximately
19mph(30km/h)issignaledintheinstrument
clusterby anindicatorlightZBTheindicator
lightturnsoninthereadymode.

8W0012721BG
IntelligentTechnology

Thesystemdoesnotworkatspeedsbetweenap-
proximately19 and37mph(30and60km/h).
Thesystemistheninready-mode.Thisisindicat-
edbytheLEDinthe buttonturningon.Thesys-
temautomaticallyswitchedoffwhenyoudrive
fasterthan37mph(60km/h).TheLEDwillalso
turnoffinthisscenario.
Hilldescentassistisautomaticallyactivatedun-
derthefollowingconditions:
—theLEDinthebuttonturnson
—thevehiclespeedislowerthan19mph(30
km/h)
—thehillangleisatleastapproximately6%

ZAWARNING
—Bereadytoapply thebrakesatalltimes
whenusingthehillholdassist.
—Alwaysadjustthespeedto thevisibility,
weather,road,andtrafficconditions.The
systemcannotreplacethedriver'satten-
tion.
— Thesystemcannotmaintainaconstantvehi-
clespeedinallsituations,forexamplewhen
onsmoothorslipperyground.Thiscanin-
creasetheriskofanaccident.

Brakes
Newbrakepads
Newbrakepadsdonotachievetheirfullbraking
effectduringthefirst250mi(400km).They
mustbe“brokenin”first.However,youcancom-
pensatefortheslightlyreducedbrakingforceby
pressingfirmlyonthebrakepedal.Avoidheavy
brakingduringthebreak-inperiod.
Brakepadweardependslargelyonthewaythe
vehicleisdrivenandonoperatingconditions.
Brakepadwearincreaseswhendrivingfrequently
inthecityorshortdistancesorwhenusingavery
sportydrivingstyle.
Operatingnoise
Noisesmayoccurwhenbrakingdependingonthe
speed,
brakingforce,andoutsideconditionssuch
astemperatureandhumidity.
Wetconditionsorroadsalt
Incertainsituations,forexampleafterdriving
throughwater,inheavyrain,orafterwashing
yourcar,thebrakingeffectmaybereduceddue
tomoistureoriceonthebrakerotorsandbrake
pads.Thebrakesmustbe“dried”firstwithafew
carefulbrakeapplications.
Whendrivingathigherspeedswhilethewind-
shieldwipersareswitchedon,thebrakepadsare
brieflypressedagainstthebrakerotors.Thisac-
tion,whichisnotfeltbythedriver,happensat
regularintervalsandensuresabetterreaction
timeforthe brakesinwetweather.
Thebrakingeffectcanalsobereducedifyouare
drivingonsaltedroadsandyoudonot applythe
brakesforlongperiodsoftime.Thelayerofsalt
onthebrakerotorsandpadsmustbewornoff
firstwhenthebrakesareapplied.
Corrosion
Leavingthevehicleparkedforlongperiodsof
time,lowmileageonthevehicle,andavoiding
heavybrakingcancontributetocorrosiononthe
brakerotorsandtodirtybrakepads.
Ifyouusuallyavoidheavybrakingorifthereis
corrosionpresent,occasionalheavybrakingat
highspeedsisrecommendedtocleanthebrake
rotorsandpads>A\.
Brakesystemmalfunction
Ifyounoticethatthebrakepedalsuddenlygoes
downfarthertowardthefloorwhenyoupressit,
thenabrakecircuitinthedual-circuitbrakesys-
temmayhavemalfunctioned.Drivetoanauthor-
izedAudidealerorauthorizedAudiServiceFacili-
tyimmediatelytohavetheproblemcorrected.
Onthewaythere,drivewithreducedspeedand
keepinmindthatyouwillneedalongerdistance
tostopandyouwillneedtopressthebrake pedal
harder.
Lowbrakefluidlevel
Whenthebrakefluidlevelislow,malfunctionsin
thebrakesystemmayoccur.Thebrakefluidlevel
iselectronicallymonitored.
141