warning AUDI S4 2019 Repair Manual

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Trailertowing

Trailertowing
Drivingwithatrailer
Generalinformation
Yourvehicleisprimarilyintendedfortransport-
ingpeopleandluggage.However,ifyoudrive
withatrailer,followthetechnicalrequirements,
the operationanddrivingtips,andthelegalreg-
ulations.
Drivingwithatraileraffectsthevehicle'sfuel
consumption,performanceandwear.Italsore-
quireshigherconcentrationfromthedriver.

Z\WARNING
Donottransportanypeopleinatrailerdueto
theriskoffatalinjury.
Technicalrequirements
Certainrequirementsmustbemetwhentowing
atrailer.

Trailerhitch
Only useatrailerhitchwitharemovableball
hitchmountandballhitch.Thetrailerhitchmust
bepermittedforthevehicle,thetrailerandthe
permittedtotalweightofthetrailerbeing
pulled.Aboveall,itmustbesecurelyandsafely
attachedtothevehicletrailer.
Nevermountatrailerhitchonthebumper.The
trailerhitchmustbemountedinawaythatdoes
not impair thefunctionofthebumper.Donot
makeanychangestotheexhaustsystemandthe
brakesystem.
Checkregularlyifthetrailerhitchissecurely
mounted.Alwaysfollowtheinstructionsgivenby
thetrailerhitchmanufacturer.
Trailerbrakes
Ifthetrailerhasitsownbrakesystem,thenfol-
lowthemanufacturerspecifications.However,
thebrakesystemonthetrailermustneverbe
connectedtothevehiclebrakesystem.
Enginecoolingsystem
Drivingwithatrailermeansahigherloadonthe
engineandthecoolingsystem.Thecoolingsys-
temmustbedesignedforadditionalloadand
containenoughcoolant>@.
()Note
Longerinclinescannotbedrivenwithouta
suitablecoolingsystem,especiallyiftheout-
sidetemperaturesarehigh.Otherwise,this
increasestheriskofenginedamage.
Operatinginstructions
Severalthingsmustbenotedwhentowinga
trailer.
Towingcapacity
Yourvehiclecanonlybeoperatedwithclass1or
class2trailers.
Loaddistribution
Poorcargoloadanddistributioncannegatively
impactvehiclehandling.Loadthetrailerbased
onthefollowingcriteriaasmuchaspossible:
—Storeobjectsinthevehicleluggagecompart-
ment,ifpossible.Thevehicleshouldalways
carrytheheaviest possibleloadandthetrailer
shouldhavethelightestpossibleload.
—Distributetheloadinthetrailerso thatthe
heavyobjectsareasclosetotheaxleaspossi-
ble.
—Secureobjectsso thattheydonotslide.
—Utilizethemaximumpermittedtongueweight
ifpossible.
Tires
Setthetirepressureonyourvehiclefora“full
load”;seethetirepressuresticker>page332.If
necessary,alsoadjustthetirepressureonthe
traileraccordingtothemanufacturer'sspecifica-
tions.
Thetrailerandthevehicleshould beequipped
withwintertireswhendrivinginwintertempera-
tures.
93
>

Trailertowing

Outsidemirrors
Ifyoucannotseethetrafficbehindthetrailer
withthestandardexterior mirrors,thenyou
mustattachadditionalexterior mirrors.Adjust
themsoyouhaveasufficientvisibilitybehind
you.
Exterior lighting
Followthelegalregulationsregardingthelight-
ingequipmentonyourtrailer.Contactanauthor-
izedAudidealerorauthorizedAudiServiceFacili-
tyformoreinformation.
Beforeyoustartdriving,checkalllightingequip-
mentonthetrailerwhileitishitchedtothevehi-
cle.
Theheadlightrangecontrolautomaticallyad-
juststhelightrangeoftheheadlights.
Safetychains
Makesurethesafetychainsarecorrectlyapplied
whenpullingatrailer.Thechainsshouldhang
enoughsothatthetrailercandrivearound
curves.However,theymustnottouchthe
ground.
©)Note
Attachmentsretrofittedonthevehiclemay
causedamage,especiallyonthetrailerhitch
ballhead.Incasesofdamage,havethefunc-
tioncheckedby anauthorizedAudidealeror
authorizedAudiServiceFacility.
G)Tips
—Blockthewheelswithchockswhenparking
oninclinesifthetrailerisloaded.
—Havingthevehicleinspectedbetweenthe
inspectionintervalsisrecommendedifyou
towatrailerfrequently.
—Avoiddrivingwithatrailerduringthevehi-
clebreak-inperiod.
94
Drivingwithatrailer
Drivingwithatrailerrequiresextracaution.
Speed
Adheretothelegalspeedlimits.Followthelegal
regulationsspecifictothecountry.
Asthespeedincreases,thedrivingstabilityof
thetrailerdecreases.Thereforeyoushould not
exceedthemaximumlegalspeedlimitwhen
thereareunfavorableroad,weather,and/orwind
conditions.Thisespeciallyapplieswhendriving
downhill.
Hill
Whenyoustartdrivinguphillordownhill,trailers
maytiltorswaysoonerthanwhendrivingona
levelsurface.Ifsmallswayingmovementshave
alreadyoccurred,youcanstabilizethetrailerby
firmlybrakingimmediately.Nevertryto
“straightenout”thetrailerbyaccelerating.
Downshiftbeforedrivingonhillstoutilizetheen-
ginebrakingeffect>A\.
Brakes
Whenusingatrailerwithoverrunbrakes,first
brake
gentlythenquickly.Thisreducestheriskof
jerkingwhilebrakingifthetrailerwheelslockup.
Enginecoolanttemperature
Payattentionspecificallytothecoolanttempera-
turedisplaywhentherearehighoutsidetemper-
atures,andwhendrivingonlonginclines
=page14.Shifttoahighergearinatimelyman-
ner.

ZA\WARNING
Constantbrakingcausesthebrakestoover-
heatandcansubstantiallyreducebrakingper-
formance,increasebrakingdistance,orcause
completefailureofthebrakesystem.

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Assistsystems

Assistsystems
Speedwarningsystem
Appliesto:vehicleswithspeedwarningsystem
Thespeedwarningsystemhelpsyoutostaybe-
low aspecifiedmaximumspeedthatcanbeset,
changedordeletedintheInfotainmentsystem.
Thespeedwarningsystemwarnsyouifyouare
exceeding themaximumspeedthatyouhaveset.
Awarningtonewillsoundassoonasyourspeed
exceedsthestoredvalueslightly.Theeein-
dicatorlightandamessageappearintheinstru-
mentclusterdisplayatthesametime.Theol
indicatorlightandthemessageturnoffifthe
speedfallsbackbelowthestoredmaximum
speed.
Settingathresholdisrecommendedifyouwould
liketoberemindedwhenyoureachacertain
maximumspeed.Situationswhereyoumaywant
todosoincludedrivinginacountrywithagener-
alspeedlimitorifthereisaspecifiedmaximum
speedforwintertires.
Settingthewarningthreshold

SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle>leftcontrolbutton>Driverassis-
tance>Speedwarning>Manual.
G)Tips
Regardlessofthespeedwarningsystem,you
shouldalwaysmonitoryourspeedusingthe
speedometerandmakesureyouarefollowing
thelegalspeedlimit.

Cruisecontrolsystem
Appliesto:vehicleswithcruisecontrolsystem
Thecruisecontrolsystemassiststhedriverin
maintainingaconstantspeedaboveapproxi-
mately 15mph(20km/h).Thesystemmaintains
thedesiredspeedbybrakingandaccelerating.

ZAWARNING
—Alwayspayattentiontothetrafficaround
yourvehiclewhenthecruisecontrolsystem
isinoperation.Asthedriver,youarealways
responsibleforcontrollingyourvehicle
speedandthedistancebetweenyourvehicle
andothervehicles.
—Forsafetyreasons,cruisecontrolshould not
beusedinthecity,instop-and-gotraffic,on
windingroads,andwhenroadconditionsare
poor(suchasice,fog,gravel,heavyrain,
andconditionsthatcouldlead tohydroplan-
ing),becausethisincreasestheriskofanac-
cident.
—Switchthecruisecontrolofftemporarily
whendrivinginturninglanes,highwayexits,
orinconstructionzones.
—Toreducetheriskofanaccident,youshould
onlyresumethestoredspeedifitissuitable
forthecurrenttrafficconditions.
()Note
Beforedrivingdownhillalongdistanceona
steephill,decreaseyourspeedandselecta
lowergear.Thismakesuseoftheenginebrak-
ingeffectandreducestheloadplacedonthe
brakes.
@)Tips
Thebrakelightsturnonwhenthebrakesare
appliedautomatically.
Switchingthesystemon
Appliesto:vehicleswithcruisecontrolsystem


BFV-0220



Fig.95Lever:switchingonthecruisecontrolsystem
Requirement:switchtheignitionon.
95

Assistsystems

>Toswitchthesystemon,pullthelevertoward
youtoposition().
TheGgor88]indicatorlightandthecorre-
spondingmessagewillappearintheinstrument
cluster.
ZXWARNING
Ifthebrakesaremalfunctioning(forexample,
overheating)whilethecruisecontrolsystem
isswitchedon,itmayshutoffautomatically.
Preselectingoractivatingacruisecontrol
Cytst-t)
Appliesto:vehicleswithcruisecontrolsystem


Whenthevehicleisstationary,youcanpreselect
thecruisecontrolspeedoractivatethespeed
whiledriving.
Requirement:thesystemmustbe switchedon.
>Topreselectacruisecontrolspeedwhentheve-
hicleisstationary,tapthelevertoward@)/G)
=>page95,fig.95.
>Toactivatethecruisecontrolspeed,pullthe
levertowardposition@whiledriving,or
>
Tosetthecurrentdrivingspeedasthecruise
controlspeed,pressthebutton(@)onthelever.
Theactivecruisecontrolspeedisindicatedwith
theCRUISE]orklindicatorlightintheinstrument
cluster.
Anadditionalindicatorappearsinthehead-up
display”.
Changingthecruisecontrolspeed
Appliesto:vehicleswithcruisecontrolsystem
>Toincrease ordecreasethecruisecontrolspeed
insmallincrements,tap theleveruptothe
firstleveltoward@/@)>page95,fig.95.
>Toincrease ordecreasethecruisecontrolspeed
inlargerincrements,taptheleveruptothe
secondleveltoward@)/G).
>Toincrease ordecreasethecruisecontrolspeed
continuously,tapandholdtheleveratthefirst
orsecondleveltoward(#)/C).
96
Overridingordeactivatingthecruise
controlspeed
Appliesto:vehicleswithcruisecontrolsystem
Youcanoverride ordeactivatethecruisecontrol
system.Whenyoudeactivatethesystem,your
cruisecontrolspeedwillbestoredand youcan
resumethatspeed.
Requirement:thesystemmustbe switchedon
andactivated.
Overriding
>Totemporarilyoverridethecruisecontrol
speed,presstheacceleratorpedal.
>Onceyoureleasetheacceleratorpedal,thesys-
temwilladjustbacktothestoredcruisecontrol
speed.
Ifyouoverridethecruisecontrolsystemfora
longperiodoftime,thecruisecontrolsystem
willbedeactivated.Thesystemindicatorlight
willturnoffandthecruisecontrolspeedwillbe
stored.
Deactivating
>Todeactivatethecruisecontrolspeed,press
thelevertoward(2)(notlockedintoplace)
=>page95,fig.95.
>Pressthebrakepedal.

Z\WARNING
Restingyourfootontheacceleratorpedal
couldoverridethecruisecontrol.Thiswillpre-
ventbrakinginterventionsby the system.
Seema
Appliesto:vehicleswithcruisecontrolsystem

Whenyouswitchthesystemoffcompletely,the
cruisecontrolspeedwillbedeleted.
Requirement:thesystemmustbe switchedon.
>Toswitchthesystemoff,pressthelevertoward
@(lockedintoplace)>page95,fig.95,or
>Switchtheignitionoff.

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Assistsystems

Appliesto:vehicleswithcruisecontrolsystem
ICRUISE|/3)Speedcontrolsystem:currentlyun-
available.Seeowner'smanual
Iftheindicatorlightturnsonandthismessage
appears,thecruisecontrolsystemhasbeendeac-
tivated.Thereisatemporarymalfunction,forex-
amplethebrakesareoverheating.Switchthe
cruisecontrolsystemonagainlater.
Camera-basedtraffic
signrecognition
Appliesto:vehicleswith camera-basedtrafficsignrecognition

Fig.96Instrumentcluster:trafficsignrecognition

B4M-0090


Fig.97Windshield:camerawindowfortrafficsignrecog-
nition
Trafficsignrecognitionassistsyouwhendriving
bydisplayingdetectedspeedlimitsorsignspro-
hibitingpassingintheinstrumentclusterdisplay
>fig.96.Withinthelimitsofthesystem,thele-
galspeedlimitsinschoolzonesaredetectedand
displayed.
Generalinformation
Trafficsignrecognitioncandetectstandard
speedlimitsignsthatarewithinthecamera'svis-
ualfield.Withassistancefromnavigationdata,
detectedspeedlimitsareevaluatedandshownin
thedisplay.Thetrafficsignforthecurrentde-
tectedspeedlimitwillblinkinthedisplayifyou
exceedthewarningthresholdsetintheInfotain-
mentsystem>page98.
Thetrafficsignrecognitionissubjecttocertain
systemlimitationsandmaybeunavailableoron-
lypartiallyavailableinthefollowingsituations:
—Whenvisibilityispoor,suchasinsnow,rain,
fogorheavyspray
—Whenthereisglare,forexamplefromoncom-
ingtrafficorthesun
—Athighspeeds
—Ifthecamera'svisualfield>fig.97iscovered,
forexamplebydirtorstickers.Forinformation
oncleaning,see>page342.
—Ifthetrafficsigns arecompletelyorpartially
covered,forexamplebytrees,snow,dirtor
othervehicles
—ifspeedtrafficsignsdonotconformtothe
standards
—Iftrafficsigns aredamagedorbent
—Iftrafficsigns aredisplayedonsignholders
withelectronicsigns
—ifthetrafficsignsortheconfigurationofthe
roadhavechanged(navigationdataisnolonger
up-to-date)

ZAWARNING
Payattentiontotrafficandtheareaaround
yourvehiclewhentrafficsignrecognitionis
turnedon.Thetrafficsignsinstalledonthe
roadalwaystakeprecedenceoverthedisplay.
Thedriverisalwaysresponsibleforassessing
thetrafficsituation.
— Undersomecircumstances,trafficsignrec-
ognitionmaynotdetecttrafficsignscorrect-
lyordetectthematall.Asaresult,thesys-
temmaynotdisplaythecorrectspeedlimit
oranyspeedlimit.
—Trafficsignrecognitiondoesnotadaptyour
vehicle'sspeedtomatchthespeedlimit!
—Thedisplayintheinstrumentclusteris
basedontheunitsofmeasurementusedfor
speedinthe countrywherethevehicleisbe-
ingoperated.Asaresult,thedisplay50in

97

Assistsystems


theinstrumentclustercanmeaneither
km/hormph,depending onthecountry.
Operating
Appliesto:vehicleswithcamera-basedtrafficsignrecognition


©.aaq
|
==a

Fig.98Instrumentcluster:additionaldisplay
Accessingtrafficsignrecognition
>Select:thefirsttab>Trafficsigns.
Settingaspeedwarning
Youcansetawarningthresholddownto10mph
(15km/h).Thetrafficsignforthecurrentdetect-
edspeedlimitwillblinkinthedisplayifyouex-
ceed thesetthreshold.

> SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle>leftcontrolbutton>Driveras-
sistance>Speedwarning>Trafficsignbased
warning.

Additionaldisplay
If aviewotherthanthetrafficsignrecognitionis
selectedintheinstrumentclusterdisplay,the
speedlimitwillbeshowninanotherdisplay
=>fig.98.Thecurrentapplicablespeedlimitwill
beshownthere,ifpossiblewithinthelimitsof
thesystem.
G)Tips
—Anadditionalindicatorappearsinthehead-
updisplay*.
—Yourspeedwarningsettingsarestoredau-
tomaticallyandassignedtothevehiclekey
inuse.
98
Messages
Appliesto:vehicleswithcamera-basedtrafficsignrecognition
Trafficsign recognition:currently unavaila-
ble.Cameraviewlimitedduetosurroundings
Functioncurrentlyunavailable.Cameraviewre-
strictedduetosurroundings
Thismessageappearsifthecamera'svisualfield
iscovered>page97,fig.97.Thesystemwill
switchitselfoff.
Trafficsign recognition:currentlylimited.
Seeowner'smanual
Thismessageappearsifthereisamalfunctionin
thenavigationsystem,forexample.Thespeed
limitdisplayislimited,whichincreasestheriskof
anincorrectdisplay.
Trafficsign-basedspeedwarning:currently
unavailable.Seeowner'smanual
Therewillbenowarningwhenthesetthreshold
isexceeded.
Notrafficsigninformationavailable
Thereisnovalidnavigationdataandnospeed
limitsweredetected.Orthereisarecommended
speedbutthereisnotaspeedlimit(forexample
drivingonandoffthe expressway).
Malfunction!Seeowner'smanual
Thesystemmaynotfunctioncorrectlysoithas
beenswitchedoff.SeeanauthorizedAudidealer
orauthorizedAudiServiceFacilityforassistance.
Functionnotavailableinthiscountry
Thevehicleisinacountrywherethefunctionis
notavailable.

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Assistsystems

Laptimer
Introduction
Appliesto:vehicleswithlaptimer
Youcanmeasureandanalyzelaptimeswiththe
laptimerinthedisplay.
Openingthelaptimer
>OpenthefirstVehicletab(tripcomputer)using
the[<>]buttononthemultifunctionsteering
wheel.
>Selectonthemultifunctionsteeringwheel:left
controlbutton>Laptimes.


Operatingthelaptimer
>Onthemultifunctionsteeringwheel,turnthe
leftthumbwheel(7)>page15untilthedesired
menuitemisdisplayedintheinstrumentclus-
ter.
>Presstheleftthumbwheeltoconfirmtheselec-
tion.

ZAWARNING
Yourfocusshouldalways beondrivingyour
vehiclesafely.Asthedriver,youhavecom-
pleteresponsibilityforsafetyintraffic.Only
use thefunctionssuchasthelaptimerinsuch
awaythatyoualwaysmaintaincompletecon-
troloveryourvehicleinalltrafficsituations.
@)Tips
Youcanretrieveinformationfromthetrip
computerwhilethelaptimerstopwatchis
running.
eymeatalLl)
Appliesto:vehicleswithlaptimer

Requirement:thelaptimermustbeopen
=>page99.
Timinglaps
>Tostarttimingmanually,selectStartlap 1in
themenu.
>Tostarttimingautomaticallyassoonasyoube-
gintodrive,selectDriveofftostartlap 1or
Startbydrivingoffinthemenu.
>Tomeasurethelaptime,selectNewlapinthe
menu.
Thisstartstimingthenextlapatthe
sametime.
Aftercompletingalap,thedifferencebetween
thelastlapandthepreviousbestlaptimewillbe
ainaynindicatedwitha“~”or“+”.
Pausingtiminganddisplayingasplittime
>ToinsertapauseiyselectPauseinthemenu.
>Toresumetiming,selectResumeinthemenu.
>Todisplayasplittime,selectSplittimeinthe
menu.Thesplittimeappearsforapproxi-
mately10secondsintheinstrumentcluster.
Thetimingofthecurrentlapcontinues.
Resettingtiming
>»Usingthemultifunctionsteeringwheel,select
Resettimesinthemenu.
@Tips
—Amaximumof99laptimescanbemeas-
ured.
—Iftimingispaused,youcancontinueitlater
evenifyouswitchtheignitionoff.
—Savedlaptimescannotbeindividuallyde-
letedfromthetotalresults.
—Thesavedlaptimervalueswillremainafter
switchingtheignitionoff.
Lapstatistics
Appliesto:vehicleswithlaptimer
Displayinglapstatistics
Youcandisplaythenumberoflapsdriven,the
fastestlap“+”,theslowestlap“—”,andtheaver-
agetime“®”intheinstrumentcluster.
un
>Onthemultifunctionsteeringwheel,selectthe
leftcontrolbutton>LapstatisticsorStatis-
tics.
>Turn thethumbwheeldownoruptodisplaythe
individuallaptimes.
>Toreturn tothelaptimingthatwasbegun,
presstheleftthumbwheel.
Resettinglapstatistics
>Onthemultifunctionsteeringwheel,select:
therightcontrolbutton>Resetstatistics.>
99

Assistsystems

@Tips
Thelapstatisticslistthelaptimesforthelast
30laps.Thefastestandslowestlaptimeout
ofupto99measuredlapsarealsodisplayed.
Predictiveefficiency
assist
Thepredictiveefficiencyassisthelpsthedriverto
drivewithanticipationandthereforehelpsto
savefuel.Thesystemaccessespredictivetripda-
ta(includingspeedlimits,hills,andtheangleof
curves)fromthenavigationsystem*.Informa-
tionfromthecamera-basedtrafficsignrecogni-
tion*isalsoappliedtorecognizetrafficsigns
=>page97.
Themessagesdisplayeddependonthenaviga-
tiondata*beingup-to-dateandthecorrectiden-
tificationbythetrafficsignrecognition”.
Whenadaptivecruisecontrol*isswitchedoff,the
predictiveefficiencyassistonlyprovidesnotifica-
tionswithoutcontrolledinterventions.See
=>page100,Predictivemessages(efficiencyas-
sist).
Whenadaptivecruisecontrol”isswitchedon,the
systemrespondstoupcomingsituationsauto-
matically.See>page101,Predictivecontrol(ef-
ficiencyassist).
Predictivemessages(efficiencyassist)
Appliesto:vehicleswithpredictiveefficiencyassist
Indicatorintheinstrumentclusterdisplay
Predictivemessagesappearintheinstrument
clusterdisplaytoshowthedrivertheappropriate
timetocoastwhenasituationaheadrequiresyou
todriveatalowerspeed.
Themessagesareonlyshownifthecruisecontrol
system*oradaptivecruisecontrol*isswitched
off.
Anadditionalindicatorappearsinthehead-up
display”.
100

SymbolMeaning

Removeyourfootfromtheacceler-
atorpedaltoslowdown,because
thereisasituationaheadthatre-~»


quiresalowerspeed.

IfyouseeDriverassistanceintheinstrument
clusterdisplay,thefollowingsymbolswillindi-
catewhichsituationthesystemiscurrentlyreact-
ingto.




SymbolMeaning
MPHSpeedlimit
km/hSpeedlimit
JikIntersection
TE
~OTrafficcircle
aca
Iftherearemultiplesituations,thenasequence
ofthesesituationswillappearinthedisplay.

ZA\WARNING
Payattentiontotrafficandtheareaaround
yourvehiclewhentheefficiencyassistis
switchedon.Thedriverisalwaysresponsible

forassessingthetrafficsituation.
(i)Tips
— Thewordingofthemessagemayvaryde-
pendingonthedrivingmodesetindrivese-
lect*>page126andthecurrentselector
leverposition(automatictransmission*).No
messagesaredisplayedwheninthe"S"se-
lector
leverpositionorinDynamicmode.

—Whenarouteisplannedusingthenaviga-
tionsystem*,thensystemdisplaysmessag-
esbasedonanassumedroute.Without
routeguidance,thesystemdisplaysmes-
sagesbasedonanassumedroute.
—Therewillnot beamessageforeverysitua-
tionahead,forexampleifthereisnot
enoughdistanceremainingtoreacttothe
situation.
—Nomessagesaredisplayedwhenatspeeds
under20mph(30km/h).

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Assistsystems

Predictivecontrol(efficiencyassist)
Appliesto:vehicleswithAudiadaptivecruisecontrolandpre-
dictiveefficiencyassist


Fig.99Instrumentcluster:predictivecontrol
Description
Thepredictivecontrol)usesthemapinforma-
tionfromthenavigationsysteminordertoreact
proactivelywhendriving.Informationfromthe
camera-basedtrafficsignrecognition*isalsoap-
pliedtorecognizetrafficsigns>page97.When
cominguptoareaswithspeedlimitsorchanges
inthe courseoftheroad(suchascurves,inter-
sectionsortrafficcircles),thesystembrakesau-
tomaticallyandthenacceleratesbackuptothe
setspeed.
Overridingcontrol
Thedrivercanoverridethepredictivecontrolat
anytimebypressingtheacceleratororbrake
pedal.Ifthesystemchangesthevehiclespeedto
adapttospeedlimits,youcanchangethespeed
usingthelever>page106,fig. 106.
Alwaysswitchoffthepredictivecontrolin
thefollowingsituations:
—Whenincreasedattentionisneededfromthe
driver
—Inpoorweatherconditionssuchassnowor
heavyrain
—Whendrivingonroadsinpoorcondition
Indicatorintheinstrumentclusterdisplay
Whenswitchingontheadaptivecruisecontrol
forthefirsttime,amessagewillappearinthe
statuslinetoindicateifpredictivecontrolis
available.

D_Thisisnotavailableinsomecountries.
TheBEsymbolappearswhenthesystem
isregulatingthespeedtomatchaspeedlimit.If
thisisthecase,thesystemisregulatingaspeed
of50mph(80 km/h).Thespeedisthentaken
overbytheadaptivecruisecontrol.Thespeedin
thespeedometerLEDringadjuststothespeedto
bemaintained>page105,fig.105.ThefaaEN
=>fig.99symbolappearswhenthereisanadap-
tationtotherouteahead.
IfyouareintheDriverassistancedisplayinthe
instrumentcluster,thenthefollowingsymbols
willindicatewhichoccurrencethesystemiscur-
rentlyrespondingto:


SymbolMeaning
MPHSpeedlimit
km/hSpeedlimit

iCurve

Intersection
JilTE
©Trafficcircle
NW

Z\WARNING
—Readthewarningson>AinGeneralinfor-
mationonpage103andon>AinDescrip-
tiononpage97.
—Payattentiontotrafficandtheareaaround
yourvehiclewhenpredictivecontrolis
switchedon.Thedriverisalwaysresponsible
forassessingthetrafficsituation.
—Thesystemdoesnotconsider"rightofway"
rulesanddoesnotrespondtotrafficlights,
solackofdriverattentioninthesesituations
canincreasetheriskofanaccident.
— The systemonlyconsiderstrafficsignsthat
giveaspeedlimit.
— The
permittedspeedcanbeexceededifthe
adaptationtoaspeedlimitisincorrect.The
driverisresponsibleforadheringtotheper-
mittedspeed.
—Thespeedwhendrivingthroughcurvesmay
bedifferentfromwhatyouasadriverwould

101

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Assistsystems

Theadaptivecruisecontrolsystemisacombina-
tionofspeedanddistanceregulation.Itassists
thedriverbybothregulatingthespeedand
maintainingadistancetothevehicledriving
ahead,withinthelimitsofthesystem.Ifthesys-
temdetectsavehicledrivingahead,theadaptive
cruisecontrolcanbrakeandaccelerateyourvehi-
cle.This increasesdrivingcomfortduringlong
tripsonhighwaysandinstop-and-gotraffic(au-
tomatictransmission*).
Whatcanadaptivecruisecontroldo?
Theadaptivecruisecontrolsystemusesvideo,ra-
dar,ultrasoundandnavigationdata.Vehicles
drivingaheadcanberecognizedupto650ft
(200m)away.
Predictivefunctionsofferthedriveradditional
comfortandcontributetothereductioninfuel
consumptionandCO2emissions>page101.
Onopenroadswithnotraffic,itfunctionslikea
cruisecontrolsystem.Thestoredspeedismain-
tained.Whenapproachingavehicledriving
ahead,theadaptivecruisecontrolsystemauto-
maticallybrakestomatchthatvehicle'sspeed
andthenmaintainsthesetdistance.Assoonas
thesystemdoesnotdetectavehicledriving
ahead,adaptivecruisecontrolacceleratesupto
thestoredspeed.
Appliesto:vehicleswithautomatictransmission
Instop-and-gotraffic,adaptivecruisecontrolcan
brakeuntilthevehicleisstationaryandthencan
alsostartdrivingagainautomaticallyundercer-
tainconditions>page107.
Intrafficjamsorstop-and-gotraffic,trafficjam
assistcanassistthedriver>page109.
Whichfunctionscanbecontrolled?
Whenyouswitchadaptivecruisecontrolon,you
cansetthecurrentspeedasthe“controlspeed”
=page105,Switchingonandoff.
Whendriving,youcanstopcruisecontrol
=>page108orchangethespeed>page106at
anytime.
Youcanalsosetthedistancetothevehicledriv-
ingaheadandsetthedrivingmodeoftheadap-
tivecruisecontrol>page106.
Generalinformation
Appliesto:vehicleswith Audiadaptivecruisecontrol

B8W-0098|

Fig.101Frontofthevehicle:sensorsandvideocamera
Theareaswiththeradarandultrasonicsensors
andthevideocamera>fig.101mustnotbecov-
ered bystickers,depositsoranyotherobjects,
becausethiscaninterferewiththeadaptive
cruisecontrolfunction.Forinformationonclean-
ing,see>page342.Thesameappliesforany
modificationsmadeinthefrontarea.
Insomedrivingsituations,theadaptivecruise
controlfunctionisrestricted:
—Vehiclescanonlybedetectedwhentheyare
withinthe sensordetectionzones>page102,
fig.100.
—Thesystemhasalimitedabilitytodetectvehi-
clesthatareashortdistanceahead,offtothe
sideofyourvehicleormovingintoyourlane.
—Objectsthataredifficulttodetectsuchasmo-
torcycles,vehicleswithhighgroundclearance
oranoverhangingloadaredetectedlateornot
detectedatall.
—Whendrivingthroughcurves>page104.
—Whenthevehicleisstationary>page104.

Z\WARNING
Alwayspayattentiontothetrafficaround you
whenadaptivecruisecontrolisswitchedon.
Asthedriver,youarestillresponsibleforyour
ownspeedandthe distancetoothervehicles.
Theadaptivecruisecontrolisusedtoassist
you.Thedrivermustalwaystakeaction to>

103