2019 AUDI A4 brake

Assistsystems


do.Brakethevehicleyourselfwhenneeded
toreducetheriskofanaccident.


Gi)Tips
—Ifaspeedlimitisdetected,thestored
speedisalsoadjustedinthespeedometer
LEDlinewhentheadaptivecruisecontrolis
notactive.
— Theadaptationby thesystemdependson
thedrivingmodesetindriveselect*.
—Switchingoffpredictivecontrol,forexam-
plewhendrivinginLowtrafficzones,does
notcausetheadaptivecruisecontrolto
switchoff.
—Afterswitchingontheignition,thesystem
initiallyadjuststoaspeedof80mph
(130km/h)whendrivingontohighways
withoutaspeedlimit.Thenthesystemad-
juststothelastspeedstoredbythedriver.
—Thereisnoadaptationtospeedlimitswhen
drivingthroughhighwayinterchangesand
whendrivingonorofftheexpressway.
—Thereisnopredictivecontrolatspeedlimits
under20mph(30 km/h).
—If aspeedlimitisonlydetectedbythecam-
eraandtheactualspeedissignificantly
higher,thenthespeedlimitwillblinkinthe
displayuntilyouhave reachedtherequired
speed>page98.
—Incorrectvaluesfromthecamera-based
trafficsignrecognition*oroutdatednaviga-
tionsystemmapdatacanleadtoincorrect
orimplausiblecontrol.
—Whenrouteguidanceisswitchedon,the
systemadaptstotherouteprovidedbythe
navigationsystem.Drivingwithoutroute
guidanceorleavingaroutecanresultinim-
plausiblecontrol.
—Thesystemswitchesoffwhenoutsideofa
roadsystemthatisrecordedinthenaviga-
tionsystemmapdata.
102

SettingsintheInfotainmentsystem
Appliesto:vehicleswithpredictiveefficiencyassist
Predictivemessages*

>IntheInfotainmentsystem,select:[MENU
button>Vehicle>leftcontrolbutton>Driver
assistance>Efficiencyassist.

Predictivemessagesareshownwhenthisfunc-
tionisswitchedon.
Predictivecontrol*

>SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle>leftcontrolbutton>Driveras-
sistance>Audiadaptivecruisecontrol>Pre-
dictivecontrol.

Setspeedlimit-whenthisfunctionisswitched
on,thesystemadjuststothespeedlimits.This
canalsobedonewithattolerance,ifdesired.In
this
scenario,youmayfallbeloworexceedthe
setspeedinfavorofincreasedefficiency.
Adaptationtorouteahead-whenthisfunction
isswitchedon,thesystemadaptstotheroute
ahead, suchasreducingthespeedwhendriving
aroundcurves.
@Tips
Nopredictivemessagesareshowninvehicles
withoutanavigationsystem.
Audiadaptivecruise
control
Appliesto:vehicleswith Audiadaptivecruisecontrol

B4m-0091

Fig.100Detectionrange

8W0012721BG
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

Assistsystems


avoidacollision.Thedriverisalwaysresponsi-
bleforbrakingatthecorrecttime.
—Forsafetyreasons,donotuseadaptive
cruisecontrol whentheroadsurfaceisin
poorconditionand/orinbadweathercondi-
tions(suchasice,fog,gravel,heavyrainand
hydroplaning).Usingthesystemunder
theseconditionsincreasestheriskofanac-
cident.
—Switchadaptivecruisecontrolofftemporari-
lywhendrivinginturninglanes,onexpress-
wayexits(exceptifpredictivecontrolis
switchedon)orinconstructionzones.This
preventsthevehiclefromaccelerating to
thestoredspeedwheninthesesituations.
—Theadaptivecruisecontrolsystemwillnot
brakebyitselfifyouputyourfootontheac-
celeratorpedal.Doingsocanoverridethe
speedanddistanceregulation.
—Whenapproachingstationaryobstacles
suchasstoppedtraffic,adaptivecruisecon-
trol willrespondwithlimitedfunction.
—Adaptivecruisecontroldoesnotrespondto
people,animals,orcrossingoroncoming
objects.
—Thefunction oftheradarsensorscanbeaf-
fectedbyreflectiveobjectssuchasguard
rails,theentrancetoatunnel,heavyrainor
ice

1)Note
Thesensorscanbedisplacedbyimpactsor
damagetothebumper,wheelhousingand
underbody.Thiscanimpair theadaptive
cruisecontrol.HaveanauthorizedAudidealer
orauthorizedAudiServiceFacilitychecktheir
function.
G)Tips
Foranexplanationonconformitywiththe
FCCregulationsintheUnitedStatesandthe
IndustryCanadaregulations,see>page370.
104
Incurves
Appliesto:vehicleswithAudiadaptivecruisecontrol



Fig.102Example:drivinginto acurve
Whendrivingintoacurve>fig.102andoutofa
curve,theadaptivecruisecontrolmayreacttoa
vehicleintheneighboringlaneandapplythe
brakes.Youcanpreventthatbypressingtheac-
celeratorpedalbriefly.
Stationaryvehicles
Appliesto:vehicleswithAudiadaptivecruisecontrol

B8V-0630


Fig.103Example:vehiclechanginglanesandstationary
vehicle
Withinthelimitsofthesystem,adaptivecruise
controlcanreacttostationaryvehicles
=>fig.103,aslongasyouaredrivingslowerthan
30mph(50km/h) andthesystemclassifiesthe
possiblepassingmaneuveraslow.Forexample,
ifavehiclethatwasalreadydetected(@turnsor
changeslanes,theadaptivecruisecontrolreacts
tothestationaryvehicleaheadofit@).
Vehicleswithmanualtransmission
Appliesto:vehicleswithAudiadaptivecruisecontroland
manualtransmission
Theadaptivecruisecontrolisavailablefrom1st
gearthrough6thgearinthenormalspeedrange.>

8W0012721BG
Assistsystems

Whentheadaptivecruisecontrolisturnedon,
youmustpresstheclutchtoshiftgears(asusu-
al).Whenshiftingnormallyorwhenpressingthe
clutch,theadaptivecruisecontrolremains
turnedon.
Afteryouhaveengagedthegear,youdonotneed
topressthegaspedal.Theadaptivecruisecon-
trolacceleratesautomaticallyifnecessary.
Ifyoupressdownontheclutchfortoolongor
shift/coupleimproperly,theadaptivecruisecon-
trolmayturnoffautomatically.
Switchingonandoff
Appliesto:vehicleswithAudiadaptivecruisecontrol

B4M-0231


RAH-8655


Fig.105Instrumentcluster:adaptivecruisecontrol
Youcansetanyspeedbetween20mphand95
mph(30km/hand150km/h).
Indicatorlightsandmessagesintheinstrument
clusterdisplayinformyouaboutthecurrentsit-
uationandsetting.
Anadditionalindicatorappearsinthehead-up
display*.
Switchingadaptivecruisecontrolon
> Pullthelevertowardyouintoposition@
>fig.104.
Storingthespeedandactivatingregulation

>Tostorethecurrentspeed,pressthe[SET]but-
ton>fig.104.Thestoredspeedisshowninthe
speedometerintheLEDline@)andappears
brieflyinthestatusline©)>fig.105.
»Automatictransmission:toactivatecontrol
whenstationary,thebrake pedalmustalsobe
pressed.

Switchingadaptivecruisecontroloff
>Pushtheleverawayfromyouintoposition©
untilitclicksintoplace.ThemessageACC:off
appears.
Indicatorlights
B-Adaptivecruisecontrolmustbeswitched
on.Novehiclesaredetectedahead.Thestored
speedismaintained.
BA-Avehicledrivingaheadwasdetected.The
adaptivecruisecontrolsystemregulatesthe
speedanddistancetothevehicledrivingahead
andaccelerates/brakesautomatically.
Appliesto:automatictransmissions
&-Adaptivecruisecontrolmustbeswitched
on.Avehiclewasdetectedahead.Yourvehicleis
stationaryandwillnotstartdrivingautomatical-
ly.
Appliesto:automatictransmissions
EB-Adaptivecruisecontrolmustbeswitched
on.Novehiclesweredetectedahead.Yourvehicle
isstationaryandwillnotstartdrivingautomati-
cally.
A-Theautomaticbrakingisnotenoughto
maintainasufficientdistancetoavehicledriving
ahead.Youmustintervene>page109,Driverin-
terventionrequest.
©Instrumentclusterdisplay
IftheDriverassistancedisplayisnotshownin
theinstrumentclusterdisplay,youcanopenit>
105

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Assistsystems

>Toincrease ordecrease thedistanceinincre-
ments,tap theswitchagaintoward@)or ©).
Thedistancebetweenthetwovehicleswill
changeintheinstrumentclusterdisplay.
Whenapproachingavehicledrivingahead,the
adaptivecruisecontrolsystembrakestomatch
thatvehicle'sspeedandthenadjuststotheset
distance.Ifthevehicledrivingaheadaccelerates,
thentheadaptivecruisecontrolwillalsoacceler-
ateuptothespeedthatyouhaveset.
Thehigherthespeed,thegreaterthedistance
=>A\.TheDistance3settingisrecommended.
Thatisequaltothegeneralrecommendationof
“halfthespeedshownonthespeedometer”.
Thedistancesprovidedare specifiedvalues.De-
pendingonthedrivingsituationandhowtheve-
hicleaheadisdriving,theactualdistancemaybe
moreorlessthanthesetargetdistances.
Ifyouchangethetimegaps,thevalueyouhave
justsetappearsbrieflyintheinstrumentcluster
display,forexampleBiforDistance3.Thisonly
occursiftheDriverassistancedisplayisnotcur-
rentlyshowninthedisplay>page105,fig.105.
Distance1:thissettingcorrespondstoadistance
of92ft(28m)whentravelingat62mph(100
km/h),oratimedistanceof1second.
Distance2: thissettingcorrespondstoadistance
of118ft(36m)whentravelingat62mph(100
km/h),oratimedistanceof1.3seconds.
Distance3:thissettingcorrespondstoadistance
of164ft(SOm)whentravelingat62mph(100
km/h),oratimedistanceof 1.8seconds.
Distance4:thissettingcorrespondstoadistance
of219ft(67m)whentravelingat62mph(100
km/h),oratimedistanceof2.4seconds.
Distance5:thissettingcorrespondstoadistance
of328ft(100m)whentravelingat62mph(100
km/h),oratimedistanceof3.6seconds.

D_Thisisnotavailableinsomecountries.

ZAWARNING
Whensettingthedistance,thedriverisre-
sponsibleforadheringtoanyapplicablelegal
regulations.
@Tips
Dependingontheselecteddrivingprogram
anddistance,drivingbehaviorwhenacceler-
atingwillvaryfromdynamictocomfortable
=>page108.
Drivinginstop-and-gotraffic
Appliesto:vehicleswith Audiadaptivecruisecontrolandau-
tomatictransmission



Fig.108Instrumentcluster:safestartmonitor
Theadaptivecruisecontrolsystemalsoassists
youinstop-and-gotraffic.Ifavehicledriving
aheadstops,yourvehiclewillbrakeandstayata
stopwithinthelimitsofthesystem.
Startingtodrivewithadaptivecruise
control!)
AslongasthemessageACC:automaticgoisdis-
played,yourvehiclewillbegindrivingwhenthe
vehicledrivingaheadstartstomove>A\.
Ifyouarestoppedforseveralseconds,yourvehi-
clewillnolongerdriveautonomouslyforsafety
reasons,
andthemessagewillturnoff.
>ToreactivateACC:automaticgotemporarily,
pullthelevertoposition@)>page108,
fig.109.
>Toresumemanualcontrolofthevehicle,tap
theacceleratorpedal.
107

Assistsystems

Safestartmonitor
Ifanobstacleisdetectedwhenyoustartdriving,
youwillbealerted tothedangerbytheBAindi-
catorlightandtheimageintheinstrumentclus-
terdisplay>fig.108>A\.Anaudiosignalwill
alsosound.Yourvehiclewilldrivemoreslowly
whenstarting.Thismayalsooccurinsomesitua-
tionswhenthereisno apparentobstacle.
—Pressthebrakepedaltoslowyourvehicle
down.

Z\WARNING
IfthemessageACC:automaticgo”appears,
yourvehiclewillstartdrivingevenifthereis
anobstaclebetweenyourvehicleandtheve-
hicledrivingahead.Thisincreasestheriskof
anaccident.
G@)Tips
—Forsafetyreasons,yourvehiclewillonly
starttodriveautomaticallyif:
—Thedriver'ssafetybeltisfastened
—Alldoorsandthehoodareclosed
—Yourvehicleisnotstoppedforalongperi-
odoftime
Interruptingcruisecontrol
Appliesto:vehicleswithAudiadaptivecruisecontrol


B4M-0233


Fig.109Selectorlever
Requirement:adaptivecruisecontrolmustbe
switched
on.

D_Thisisnotavailableinsomecountries.
2)Thisisnotavailableinsomecountriesand onsomeequip-
mentversions.
108
Overridingcruisecontrol
>Toacceleratemanually,pullthelevertoward
youintoposition@)andholditthereorpress
theacceleratorpedal.ThemessageACC:over-
rideappears.
>Toresumecruisecontrol,releasetheleveror
takeyourfootofftheacceleratorpedal.
Cancelingcruisecontrolwhiledriving
>Movetheleverintoposition@).Themessage
ACC:standbyappears.Or
>Pressthebrakepedal.
>Toresumethestoredspeed,movetheleverto-
wardyouintoposition@).
Cancelingcruisecontrolwhenstopped
Appliesto:vehicleswithautomatictransmission
>Pushtheleverawayfromyouintoposition@).
ThemessageACC:standbyappears.
>Toresumecruisecontrol,pressthebrakepedal
andpullthelevertowardyouintoposition@).

Z\WARNING
—Itisdangeroustoactivatecruisecontroland
resumethestoredspeedwhenthecurrent
road,trafficorweatherconditionsdonot
permitthis.Thisincreasestheriskofanac-
cident.
—Restingyourfootontheacceleratorpedal
couldoverridethecruisecontrol.Brakingin-
terventionsandcorrectiveactionsbythe
systemmaynotoccur.
SettingAudiadaptivecruisecontrol
Appliesto:vehicleswith Audiadaptivecruisecontrol


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

Storingthelastdistance?)
Thelastdistancethatwassetwillbestoredafter
theignitionisswitchedoff.Ifthedistanceisnot>

Assistsystems

Iftrafficjamassistwasdeactivatedthroughthe
Infotainmentsystem,youcancontinueoperating
theactivelaneassistusingthe>fig.111button
=>page118.Thetrafficjamassistfunctionsare
nolongeravailable.
Requirementsforusingtrafficjamassist:
—Trafficjamassistmustbe switchedonintheIn-
fotainmentsystem.
—Adaptivecruisecontrolmustbe switchedon
and
active>page105.
Alwaysswitchofftrafficjamassistinthe
followingsituations:
—Whenincreasedattentionisneededfromthe
driver
—Inpoorweatherconditionssuchassnowor
heavyrain
—Whendrivingonroadsinpoorcondition
—Inconstructionzones
—Incitydriving
Trafficjamassistavailability:
IfyouareintheDriverassistancedisplayinthe
instrumentcluster,theindicatorlightandthe
messageTrafficjamassistavailableappearsif
trafficcongestionisdetected.Youcanopenthe
Driverassistancedisplayusingthemultifunction
steeringwheelbuttons>page15.Toactivate
trafficjamassist,youmustpressthe>fig.111
buttonandswitchontheadaptivecruisecontrol
=>page105.
Indicatorlights
BandBA-trafficjamassistisswitchedon.Ve-
hiclesdrivingaheadweredetected.Yourvehicle
adaptswhiledriving>fig.112.
B-Trafficjamassistswitchesoffifthedriver
doesnottakeoversteeringaftermultipledriver
interventionrequests.Thesystembrakestheve-
hicleuntilitisstationary.

ZA\WARNING
Alwayskeepyourhandsonthesteeringwheel
soyoucanbereadytosteeratanytime.The
driverisalwaysresponsibleforstayingina
laneandforassessingtrafficsituations.Read
andfollowthewarningson>A\inGeneralin-

110

formationonpage103.Neverusetrafficjam
assistinthefollowingsituationsoryouwill
increasetheriskofanaccident:
—Drivingoffroadoronunpavedroads.Traffic
jamassistisonlydesignedforuseonpaved
roads.
—Incitydrivingorinconstructionzones
—Oncurvingstretchesofroad.
—Innarrowlanes
—Inuncleartrafficsituationssuchasatinter-
sectionsortollstations
@Tips
Youarenotnecessarilyguidedtothe center
ofyourlane.
PMENaTemelecile)
Appliesto:vehicleswith Audiadaptivecruisecontrol

Thisfunctionmeasuresthetimebetweentheve-
hicledrivingaheadandshowsthisintheinstru-
mentclusterdisplay.


Fig.113Instrumentcluster:distanceindicator/warning
Description
Atspeedsaboveapproximately40mph(65
km/h),thisfunctionmeasuresthedistancetothe
vehicleaheadastime.
>Switchtheadaptivecruisecontroldisplayonin
theinstrumentclusterdisplay>page15.
TheBindicatorlightturnsonifyoufallbelow
thesetdistance.
Settingthewarningthreshold
Youcanset,changeordeletethewarningthresh-
oldintheInfotainmentsystem.

8W0012721BG
Assistsystems


>IntheInfotainmentsystem,select:[MENU
button>Vehicle>leftcontrolbutton>Driver
assistance>Distancewarning.


Z\WARNING
—Readandfollowthewarningson>Ain
Generalinformationonpage103.
—Thedriverisalwaysresponsibleforadhering
totheregulationsapplicableinthe country
wherethevehicleisbeingoperated.
@Tips
Youmayfallbelowhewarningthreshold
brieflywhenpassingorwhenquicklyap-
proachingaslowvehicle.Thereisnowarning
inthisscenario.Awarningisgivenonlyifyou
fallbelowthewarningthresholdforanex-
tendedperiodoftime.
Appliesto:vehicleswithAudiadaptivecruisecontrol

ACCwithtrafficjamassist:unavailable.See
owner'smanual
Thesystemcannotguaranteethatitwilldetect
vehiclescorrectlyandithasswitchedoff.Thera-
darsensorshaveshiftedorarefaulty.Drivetoan
authorizedAudidealerorauthorizedAudiService
Facilityimmediatelytohavethe malfunctioncor-
rected.
ACCwithtrafficjamassist:currentlyun-
available.Seeowner'smanual
Thismessageappearsiftheadaptivecruisecon-
trolcannotbeactivated,forexampleifthehood
isopen.
ACCw.trafficjamassist:currentlyunavaila-
ble.Sensorvisionrestrictedduetosurround-
ings.Seeowner'smanual
Thismessageappearsiftheradarsensorviewis
obstructed,forexamplebyleaves,snow,heavy
sprayordirt.Cleanthesensors>page103,
fig.101.
ACCwithtrafficjamassist:currentlyun-
available.Gradetoosteep
Theroadexceedsthemaximumpossiblegrade
forsafeoperation.Thesystemscannotbeswitch-
edon.
ACCwithtrafficjamassist:onlyavailablein
D,SorM
Selectthe"D/S"or"M"selectorleverposition.
ACC:availablefrom1stgearup
Manualtransmission:adaptivecruisecontrol
worksin1stgearandhigher.
ACC:clutchpedalpressed
Manualtransmission:pressingtheclutchpedal
longerinterruptsthecontrol.
ACC:noteenginespeed
Manualtransmission:thismessageappearsifthe
driverhasnotshiftedupordownintimewhen
theadaptivecruisecontrolisbrakingoracceler-
ating,causingthevehicletoexceedortonot
reachthepermittedenginespeed.Theadaptive
cruisecontrolswitchesoffautomaticallyandcan-
notbe switched backon.
ACCwithtrafficjamassist:currentlyun-
available.Parkingbrakeapplied
Thesystemsswitchoffifyousettheparking
brake.Thesystemsareavailableagainafteryou
releasetheparkingbrake.
ACCwithtrafficjamassist:currentlyun-
available.Stabilizationcontrol(ESC)input
ThismessageappearsiftheElectronicStabiliza-
tionControl(ESC)istakingaction tostabilizethe
vehicle.Thesystemsswitchoffinthisscenario.
ACCwithtrafficjamassist:manualcontrol!
Thismessageappearsifthevehiclerollsback
whenstartingonaslightincline,eventhoughthe
systemsareactive.Pressthebrakepedaltopre-
ventthevehiclefromrollingorstartingtomove.
ACCwithtrafficjamassist:currentlyun-
available.Downhillassistactivated
Youcannotactivatethesystemwhenhillholdas-
sistisactive.
ACCwithtrafficjamassist:manualcontrol!>
111