2019 AUDI A4 ECU

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).

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

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

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>

8W0012721BG
Assistsystems


—Presensefrontdoesnotreacttopeople,an-
imalsor objectsthatarecrossingthevehi-
cle'spathorthataredifficulttodetect>A\
inGeneralinformationonpage103.
—Reflectiveobjectssuchasguardrailsorthe
entrancetoatunnel,heavyrainandicecan
affectthefunction oftheradarsensorsand
thesystem'sabilitytodetectacollisionrisk.

@Note
Thesensorscanbedisplacedbyimpactsor
damagetothebumper,wheelhousingand
underbody.Presensefrontcanbeimpairedby
this.HaveanauthorizedAudidealeror au-
thorizedAudiServiceFacilitychecktheirfunc-
tion.
@Tips
—Youcancancelthebrakingwithincreasing
forcethatisinitiatedbythesystembybrak-
ingyourself,byacceleratingnoticeablyorby
swerving.
—Keepinmindthatpresensefrontcanbrake
unexpectedly.Alwayssecureanycargoor
objectsthatyouaretransportingtoreduce
theriskofdamageorinjury.
—Specificpresensefrontfunctionsswitchoff
whentheESCisrestrictedorswitchedoff
=page139orthehillholdassist*isswitch-
edon>page140.
Audipresenserear
Appliesto:vehicleswithAudisideassist
Iftheriskofacollisionwithavehicleaheadisde-
tected,thefollowing functionscanbetriggered:
—Reversibletensioningofthefront safetybelts
atthecorrespondingspeeds
—Closingthewindowsandsunroof*
—Inflatingthesidebolsters*ontheseatbackrest
—Activatingthe emergencyflasherswithin-
creasedfrequency)
ThemessageAudipresenseAN}>page113,
fig.114willwarnyouaboutthedanger.

D_Thisisnotavailableinsomecountries.
Audidriveselect*:thefunctionisnotactivede-
pendingonthemodeselected.

Z\WARNING
—Toreducetheriskofanaccident,please
notethatthesideassist*radarsensorsdo
notalwaysdetecteveryobject.
—Presensereardoesnotreacttopeople,ani-
malsorobjectsthatare crossingthevehi-
cle'spathorthataredifficulttodetect.
—Reflectiveobjectssuchasguardrails,heavy
rainandicecanimpairthefunction ofthe
radarsensorsandtheabilitytodetectacol-

lisionrisk.
@)Note
Theradarsensorscan bedisplacedbyimpacts
ordamagetothebumper,wheelhousingand
underbody.Presenserearcanbeimpairedby
this.HaveanauthorizedAudidealeror au-
thorizedAudiServiceFacilitychecktheirfunc-
tion.
G)Tips
Thepresenserearfunctionsmayalsoswitch
offifthereisamalfunctioninthesideassist*
system.
Audipresensecity
Appliesto:vehicleswithAudipresensecity

Description
Withinthelimitsofthesystem,presensecity
canwarnyouofimpendingcollisionswithvehi-
clesandpedestriansandinitiatetheapplicable
brakingmaneuverifneeded.Presensecityisac-
tiveatspeedsofapproximately6mph(10km/h)
andhigher.
Apedestrianwarningcanoccuratspeedsupto
50mph(85km/h),andvehiclewarningscanoc-
curatspeedsupto155mph(250km/h).Apre
sensecitybrakingmaneuverispossibleatspeeds
upto50mph(85km/h).
115
>

Assistsystems

Warnings
Thesystemrecognizesvariousdangeroussitua-
tions.Theearlywarningoccursif:
—Avebhicledrivingaheadbrakessuddenly
—Yourownvehicleapproachesavehicleinfront
ofyouthatistravelingatasignificantlyslower
speedorthatisstationary
—Apedestrianisstandinginthelaneorismov-
ingintothelane
Whenthiswarningoccurs,itmayonlybepossi-
bleto avoidacollisionbyswervingorbraking
strongly.ThemessageAudipresenseA
=>page113,fig.114andawarningtonewill
warnyouaboutthedanger.
Thebrakesmayalsobeappliedasanacutewarn-
ing whenthereisanimpendingcollision.Ifyou
donotreacttotheacutewarning,presensecity
canbraketothepointofcompletedeceleration
withinthelimitsofthesystem.Thisreducesthe
vehiclespeedintheeventofacollision.Themes-
sageAudipresenseAalsoappears.
Thefollowingfunctionsaretriggeredinconjunc-
tionwithpresensebasic/rear:
—Reversibletensioningofthefront safetybelts
—Closingthewindowsandsunroof*
—Inflatingthesidebolsters*ontheseatbackrest
Audidriveselect*:thefunctionisnotactivede-
pendingonthemodeselected.

asbars,railingsorrailcars,andobjectsthat
aredifficulttodetect>A\inGeneralinfor-
mationonpage103.


Z\WARNING
Presensecitymayberestrictedorunavailable
inthefollowingtypesofsituations:
—Inheavyfog,rain,spray,orsnow
—Whentherearevisualobstructions,suchas
glare,reflectionsorvariationsinlight
—Whenitisdark
—Ifthecamerawindoworthewindshieldis
dirty,iced over,damagedorcovered
—Whendrivingonsnow,iceorlooseground
—Incurves
—IftheESCwasrestrictedorswitchedoff
—Whenthedriver'sseatbeltisunfastened
—
Forseveralsecondsafter theignitionis
switchedon


ZAWARNING
—Presensecitycannotovercomethelawsof
physics.Itisasystemdesignedtoassistand
itcannotpreventacollisionineverycircum-
stance.Thedrivermustalwaysintervene.
Thedriverisalwaysresponsibleforbraking
atthecorrecttime.Donotlettheincreased
safetyprovidedtemptyouintotakingrisks.
Thiscouldincreaseyourriskofacollision.
— Thesystemcandeployincorrectlydueto
system-specificlimits.
—Toreducetheriskofanaccident,please
notethatthecameradoesnotalwaysdetect
everyobject.
—Presensecitydoesnotreacttoanimals,
crossing oroncomingvehicles,objectssuch

116
@)Note
Impactsordamagetothecameramounton
thewindshieldcandisplacethesensor.Pre
sensecitycanbeimpairedbythis.Haveanau-
thorizedAudidealerorauthorizedAudiServ-
iceFacilitychecktheirfunction.
G)Tips
—Youcancancelthesystembrakinginterven-
tionifyouaccelerateconsiderablyorswerve
away.
— Keepinmindthatpresensecitycanbrake
unexpectedly.Alwayssecureanycargoor
objects
thatyouaretransportingtoreduce
theriskofdamageorinjury.
—Specificpresensecityfunctionsswitchoff
whentheESCislimitedorswitchedoff
=>page139orthehilldescentassist*is
switchedon>page140.
—Whenthereisamalfunctioninthecamera,
thepresensecityfunctionsalsoswitchoff.

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

8W0012721BG
Assistsystems

Suspensioncontrol*
Thesuspensioncontrol*usessensorsto record
informationregardingsteeringmovements,
brakingandaccelerationoperationsbythedriver,
roadsurface,drivingspeed,andload.Thismakes
itpossibletoadaptdampingtothedrivingsitua-
tionnearlyinrealtime.Withdriveselect,youcan
adjustthesuspensioncontroltosporty(Dynam-
ic),comfortable(Comfort)orbalanced(Auto).
Steering
Thepowersteeringadapts.Indirectsteeringthat
moveseasilyasinComfortmodeisespecially
suitedtolongdrivesonhighways.TheDynamic
modeprovidessporty,directsteering.
Thefollowingappliestovehicleswithdynamic
steering*:thesteeringratiochangesbasedonve-
hiclespeedinordertomaintainoptimumsteer-
ing effortforthedriver atalltimes.Thissetsthe
steering tobelesssensitiveathigherspeedsin
ordertoprovideimprovedvehiclecontrol.Atre-
ducedspeeds,steeringismoredirectinorderto
keepthesteeringeffortasminimalaspossible
whenthedriverismaneuveringthevehicle.At
lowandaveragespeeds,dynamicsteering*addi-
tionallyprovidesmoreresponsivesteeringper-
formance.
Sportdifferential*
Asacomponentoftheallwheeldrivesystem
(quattro)>page143,thesportdifferentialdis-
tributesthedrivingpowertotherearaxlede-
pendingonthesituation.Thedistributionof
powervariesdependingontheselectedmode
frommoderate(Comfort)tosporty(Dynamic).
Thegoalisahighlevelofagilityandabilitytoac-
celerateoncurves.Thevehicleisveryresponsive
tosteering.
Adaptivecruisecontrol(ACC)*
Thebehaviorwhenacceleratingcanbeadjusted
fromcomfortabletosporty,dependingonthe
driveselectmode.Adaptivecruisecontrolalso
respondstothedrivingbehaviorofthevehicle
aheadinamoreconservativeorsportymanner.

Enginesound*
Theenginesoundadaptstothecurrentmode
andcan besubtletosporty.
@Tips
The"S"selectorleverpositionautomatically
engageswhentheDynamicmodeisselected.
Selectingthedrivingmode
Appliesto:vehicleswithAudidriveselect

B8W-0171
Fig.127Centerconsole:controlsfordriveselect
>Presstheleftorrightarrowkey>fig.127until
thedesiredmodeappearsintheinstrument
cluster/Infotainmentsystemdisplay.Or
>SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle>Audidriveselect.
>
Selectandconfirmthedesiredsetting.


Youcanchangethedrivingmodewhenthevehi-
cleisstationaryorwhiledriving.Iftrafficper-
mits, afterchangingmodes,brieflyremoveyour
footfromtheacceleratorpedalso thatthere-
centlyselectedmodeisalsoactivatedfortheen-
gine.
Offroad”-activatesoffroadfunctionstosupport
drivingonroughterrain.Theengine,transmis-
sionandsteeringadjustandtheStart/Stopsys-
tem*switchesoff.
Comfort-providesacomfort-orientedvehicle
setupandissuitedforlongdrivesonhighways.
Auto-providesanoverallcomfortableyetdy-
namicdrivingfeelandissuitedforeverydayuse.
Dynamic-givesthedriverasportydrivingfeel
andissuited toasportydrivingstyle.
Individual->page128.
127