AUDI TT COUPE 2019 Manual PDF

8S1012721BA
Assistsystems

Sietemyo)ai
Appliesto:vehicleswithAudiactivelaneassist

B8V-0692


Fig.68Turnsignallever:buttonforactivelaneassist

B4H-0312


Fig.69Windshield:camerawindowforactivelaneassist
>Pressthebuttontoswitchthesystemonand
off>fig.68.TheBworindicatorlightinthe
instrumentclusterturnsonoroff.
Indicatorlights
BgReady:theindicatorlightturnsonwhenthe
systemisreadyforuse.Thesystemcannowbe
operated.
Notready:theindicatorlightturnsonifthe
systemisswitchedonbutisinoperable.Thismay
beduetothefollowingreasons:
—Thereisnolane markerline
—Therelevant lane markerlinesarenotdetected
(forexample,markingsinaconstructionzone
orbecausetheyareobstructedbysnow,dirt,
waterorlighting)
—Thevehiclespeedisbelowtheactivationspeed
ofapproximately40mph(65km/h)(thespeed
mayvarydependingonyourcountry).
—Thelaneistoonarrowortoowide
—Thecurveistoonarrow
—Thedriver'shandsarenotonthesteering
wheel

@Tips
— Makesurethecamera'sfieldofview
>fig.69isnotobstructedbystickersor
anythingelse.Forinformationoncleaning,
see>page270.
—Incertainmarkets:ifthesystemisswitched
on,itwillswitchonautomaticallyeachtime
theignitionisswitchedon.
Meeeclei
Appliesto:vehicleswithAudiactivelaneassist
=z
Ss
Beg
Fig.70Instrument cluster:activelaneassistisswitched
onandreadytoprovidewarnings
Youcancalluptheactivelaneassistdisplayusing
thebuttonsinthemultifunctionsteeringwheel
=>page12.

Activelaneassistisactivated
andreadytoprovidewarnings.
Greenline(s)

Redline(s)
(leftorright)
Activelaneassistwarnsyou
beforeleavingalane>fig.70.
Thesteeringwheelwillalsovi-
bratelightly.
Activelaneassistisactivated,
butisnotreadytoprovide
warnings.

Grayline(s)

MessagesinInfotainmentdisplay
Iftheactivelaneassistswitchesoffautomatical-
ly,theindicatorlightinthedisplayturnsoffand
oneofthefollowingmessagesappears:
Audiactivelaneassist:currentlyunavailable.
Cameraviewrestricted.Seeowner'smanual
Thismessageappearsifthecameraisunableto
detectthelines.Thiscouldhappenif:
69

Assistsystems

—Thecamerafieldofview>page69,fig.69is
dirtyorcoveredinice.Cleanthisareaonthe
windshield.
—Thecamerafieldofviewisfoggedover.Wait
untilthe foghasclearedbeforeswitchingthe
activelaneassistonagain.
—Thesystemhasbeenunabletodetectthelanes
foranextendedperiodoftimeduetoroad con-
ditions.Switchactivelaneassistbackonwhen
thelinesaremorevisible.
Audiactivelaneassist:currentlyunavailable.
Seeowner'smanual
Thereisatemporarymalfunctionthatmaypre-
vent theactivelaneassistfromswitchingon. Try
switchingtheactivelaneassistonagainlater.
Audiactivelaneassist:malfunction!Seeown-
er'smanual
DrivetoanauthorizedAudidealerorauthorized
AudiServiceFacilityimmediatelytohavethe
malfunctioncorrected.
Audiactivelaneassist:Pleasetakeoversteer-
ing!
Thismessageappearsifyouarenotsteeringby
yourself.Ifthisisthecase,activelaneassistdoes
notswitchoff,butitis“notready”toprovidea
warning.Thesystemcanhelpyoukeepthevehi-
cleinthelane.However,youareresponsiblefor
drivingthevehicleandmuststeerityourself.

ZXWARNING
Notethatmessagesmaybedelayedornot
displayedonvehicleswithaccessoriesmount-
edonthesteeringwheel,suchasasteering
wheelspinnerknob.Alwayskeepyourhands
onthesteeringwheel.


))Thecorrectivesteeringfunctionisnotavailableinallmar-
kets.
70
Adjustingthesteeringtimeandvibration
warning
Appliesto:vehicleswithAudiactivelaneassist
Youcanadjustindividualactivelaneassistset-
tingsintheInfotainmentsystem.

SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle>leftcontrolbutton>Driverassis-
tance>Audiactivelaneassist
Steeringtime)
Early:inthissetting,thecorrectivesteeringhap-
penscontinuouslytohelpkeepthevehicleinthe
centerofthelane.
Late:inthissetting,thesystemprovidescorrec-
tivesteeringjustbeforeavehiclewheeltouchesa
detectedlane markerline.
Vibrationwarning
Youcanswitchtheadditionalvibrationwarning
inthesteeringwheelonoroff.
@)Tips
Incertainmarkets:yoursettings arestored
automaticallyandassignedtotheremote
controlkeyinuse.
Laptimer
Appliesto:vehicleswithlaptimer
Laptimer
Youcanmeasureandanalyzelaptimeswiththe
laptimerinthedisplay.Thetimeismeasuredin
minutes,secondsand 1/10seconds.Withlap
timeslongerthan60minutes,thehourisalso
shownandthedisplayof1/10secondsisre-
moved.
Thetimemeasurementonanindividuallapends
after99hours59minutesand 59seconds.Anew
lap startsautomaticallyafterthat.

8S1012721BA
Assistsystems

Themeasurementendsafteramaximumof30
laps.Youcanthenevaluatethelaptimesorstart
anewtimemeasurement.
Youcancontrolthelaptimerusingthecontrols
onthemultifunctionsteeringwheel>page71.

ZA\WARNING
Yourfocusshouldalways beondrivingyour
vehiclesafely.Asthedriver,youhavecom-
pleteresponsibilityforsafetyintraffic.Only
use thefunctionssuchasthelaptimerinsuch
awaythatyoualwaysmaintaincompletecon-
troloveryourvehicleinalltrafficsituations.

@Tips
Youcanretrieveinformationfromthetrip
computerwhilethelaptimerstopwatchis
running.
Openingthelaptimerandmeasuringtime
Appliesto:vehicleswithlaptimer


IRAH-8493|
Bestlap
Lap3
NewLap
Fig.72Instrument cluster:laptimer
Openingthelaptimer

> SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle> leftcontrolbutton>Laptimes

>Turn thethumbwheel(@)>fig.71untilStart
lap 1bydrivingofforStartbydrivingoff
=>fig.72appears.
>Pressthethumbwheel(A)toconfirmtheselec-
tion.
Timinglaps
>Tomeasurethelaptime,pressthethumb-
wheel(@)againwhileontheNewlapmenu
item. Thisstartstimingthenextlapatthe
sametime.Thelasttimemeasurementmoves
[email protected]
thecenterlineinarea@).
AslongastheJsymbolisgreenduring thecur-
rentlaptimemeasurement,thecurrenttimeis
fasterthanyourbesttimetodate.Ifthe[Jsym-
bolisred,thecurrenttimeisslower().
Displayingsplittimeandpausingtiming
>[email protected]
wheel(@)untilSplittimeappearsinline@).
Pressthethumbwheel(@)toconfirmtheselec-
tion.Thesplittimeappearsforapproximately
10secondsinarea@).Thetimingofthecur-
rentlapcontinues.
Ifyouwouldliketoinsertapausein|immediate-
lyafterthesplittime,firstpressthethumbwheel
@)toconfirm themenuitemResetvalueswith
OK.
>Toinsertapause, turnthethumbwheel(@)until
Pauseappearsinline(@).Pressthethumbwheel
@toconfirmtheselection.Thepausesymbol
Dlappearsinarea©.
>Tocontinuetiming,pressthethumbwheel(A).
Iftimingispaused,youcancontinueitlatereven
ifyouswitchtheignitionoff.
MeaningoftheindicatorintheInfotainmentsys-
temdisplay>fig.72:

@_|Displayoflastrecordedtime



@_|Symbols:
-:startoftimerecording
[email protected]
-@:fastestrecordedtime
-):splittime
.Oi.pause>

71

Assistsystems


@_|Currenttimemeasurement
@=|Menu:
-Startlap1bydrivingoff(start)
-Startbydrivingoff(start)
-Newlap(startanotherlap)
-Splittime(timeforasectionwithinthe
course)
-Pause(pausethetiming)
-Cancellap
-Resetlaptimes(deletesallvalues)
Evaluatingrecordedtimesorresetting
Appliesto:vehicleswithlaptimer


Youcanevaluatethefastest,slowestandaver-
agelaptimes.
is
3
z
ss

Fig.73Instrumentcluster:laptimer
Afterevaluatingthelaptimes,youcancontinue
thecurrenttimingroundorstartover,meaning
startlap1again.

> SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle> leftcontrolbutton>Lapstatis-
tics.Thedisplayshowsthefastestlap“+”,the
slowestlap“—”andtheaveragelaptime“0”.
Turnthethumbwheel(A)downwardorupward
to displaytheindividuallaptimes.
>Pressthethumbwheel(A)toresumethepaused
laptiming.
>»Presstheleftcontrolbuttononthemultifunc-
tionsteeringwheeltoresetthetimertozero.
Thenturnthethumbwheel(@)andselectthe
desiredsettingbymovingthecursor(red
frame).Pressthethumbwheel@)toconfirm
the
selection.
>Pressthethumbwheel(@)torestartthelaptim-
erforanewlaptiming,ifneeded.
>Pressthe[MENU]buttontoexitthelaptimer.



72
Evaluationlegend9fig.73:
@|Alllaps
@|Bfastestlaptime
@|Bslowestlaptime
@|f@averagelaptime
G)Tips
—Savedlaptimescannotbeindividuallyde-
letedfromthetotalresults.
—Thesavedlaptimervalueswillremainafter
switchingtheignitionoff.





Audisideassist
Appliesto:vehicleswithAudisideassist

BFV-0079



BFV-0080


Fig.75Displayontheexteriormirror
Sideassisthelpsyoumonitoryourblindspotand
trafficbehindyourvehicle.Withinthelimitsof
thesystem,itwarnsyouaboutvehiclesthatare
coming
closerorthataretravelingwithyouwith-
insensorrange@)>fig.74:ifalanechangeis
classifiedascritical,thedisplay@)intheexterior
mirror>fig.75turnson.
Thedisplayintheleftexteriormirrorprovidesas-
sistancewhenmakingalanechangetotheleft,>

8S1012721BA
Assistsystems

whilethedisplayintherightexteriormirrorpro-
videsassistancewhenmakingalanechangeto
theright.
Informationstage
Aslongasyoudonotactivatetheturnsignal,
sideassistinformsyouaboutvehiclesthatare
detectedandclassifiedascritical.Thedisplayin
themirrorturnson,butisdim.
Thedisplayremainsdimintheinformationstage
sothatyourviewtowardthefrontisnotdistur-
bed.
Warningstage
Ifyouactivatetheturnsignal,sideassistwarns
youaboutvehiclesthataredetectedandclassi-
fiedascritical.Thedisplayintherespectivemir-
rorblinksbrightly.Ifthishappens,checktraffic
by glancingintheexteriormirrorsandoveryour
shoulder>A\inGeneralinformationon
page74.
@)Tips
Youcanadjustthebrightnessonofthedis-
playontherearviewmirror>page74.

Generalinformation
Appliesto:vehicleswithAudisideassist


BFV-0260

BFV-0082

Fig.77Rearofthevehicle:positionofthesensors(exam-
ple)
Sideassistfunctionsatspeedsaboveapproxi-
mately19mph(30km/h).
@Approachingvehicles
Incertaincases,avehiclewillbeclassifiedas
criticalforalanechangeevenifitisstillsome-
whatfaraway.Thefasteravehicleapproaches,
the
soonerthedisplayintheoutsidemirrorwill
turnon.
@Vehiclestravelingwithyou
Vehiclestravelingwithyouareindicatedinthe
exteriormirroriftheyareclassifiedascriticalfor
alane change.Allvehiclesdetectedbysideassist>
73

Assistsystems

areindicatedby thetimetheyenteryour“blind
spot”,
atthelatest.
@®Vehiclesyouarepassing
Ifyouslowlypassavehiclethatsideassisthas
detected(thedifferenceinspeedbetweentheve-
hicleandyourvehicleislessthan9mph(15km/
h)),thedisplayintheexteriormirrorturnsonas
soonasthevehicleentersyourblindspot.
Thedisplaywillnotturnonifyouquicklypassa
vehiclethatsideassisthasdetected(thediffer-
enceinspeedisgreaterthan9mph(15km/h)).
Functionallimitations
Theradarsensorsaredesignedtodetecttheleft
andrightadjacentlaneswhentheroadlanesare
thenormalwidth.Insomesituations,thedisplay
intheexteriormirrormayturnoneventhough
thereisnovehiclelocatedintheareathatiscriti-
calforalanechange.Forexample:
—Ifthelanes arenarroworifyouaredrivingon
theedgeofyourlane.Ifthisisthecase,the
systemmayhavedetectedavehicleinanother
lanethatisnotadjacenttoyourcurrentlane.
—Ifyouaredrivingthroughacurve.Sideassist
mayreacttoavehiclethatisonelaneoverfrom
theadjacentlane.
—Ifsideassistreactstootherobjects(suchas
highordisplacedguardrails).
—Inpoorweatherconditions.Thesideassist
functionsarelimited.
Donotcovertheradarsensors>fig.77with
stickers,deposits,bicyclewheelsorotherob-
jects,becausetheywillimpairthefunction.For
informationoncleaning,see>page270.

ZAWARNING
—Alwayspayattentiontotrafficandtothe
areaaroundyourvehicle.Sideassistcannot
replaceadriver'sattention.Thedriveralone
isalwaysresponsibleforlanechangesand
similardrivingmaneuvers.
—Insomesituations,thesystemmaynot
functionoritsfunctionmaybelimited.For
example:

74

—Ifvehiclesareapproachingorbeingleft
behindveryquickly.Thedisplaymaynot
turnonintime.
—Inpoorweatherconditionssuchasheavy
rain,snoworheavymist.
—Onverywidelanes,intightcurves,orif
thereisariseintheroadsurface.Vehicles
intheadjacentlanemaynot be detected
becausetheyareoutsideofthesensor
range.
()Note
Thesensorscanbedisplacedbyimpactsor
damagetothebumper,wheelhousingand
underbody.Thiscan impair thesystem.Have
anauthorizedAudidealerorauthorizedAudi
ServiceFacilitychecktheirfunction.
@Tips
—Ifthewindowglassinthedriver'sdooror
front
passenger'sdoorhasbeentinted,the
displayintheexteriormirrormaybeincor-
rect.

—Foranexplanationonconformitywiththe
FCCregulationsinthe UnitedStatesandthe
IndustryCanadaregulations,see
=>page291.
SyiememeRela
Appliesto:vehicleswithAudisideassist

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

Ifthesystemisactivated,thedisplaysintheex-
teriormirrorswillturnonbrieflywhentheigni-
tionisswitchedon.
Adjustingthedisplaybrightness
Appliesto:vehicleswith Audisideassist
ThedisplaybrightnesscanbeadjustedintheIn-
fotainmentsystem.

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

8S1012721BA
Assistsystems

Thedisplaybrightnessadjustsautomaticallyto
thebrightnessofthesurroundings,bothinthe
informationandinthewarningstage.Invery
darkorverybrightsurroundings,theautomatic
adjustmentwillsetthedisplaytotheminimum
ormaximumlevel.Insuchcases,youmaynotice
nochangewhenadjustingthebrightness, orthe
changemayonlybenoticeableoncethesur-
roundingschange.
Adjustthebrightnesstoalevelwherethedisplay
intheinformationstagewillnotdisruptyour
view
ahead.Ifyouchangethebrightness,thedis-
playintheexteriormirrorwillbrieflyshowthe
brightnesslevelintheinformationstage.The
brightness ofthewarningstageislinkedtothe
brightnessintheinformationstageandisadjust-
edalongwiththeinformationstage.
@)Tips
—Sideassistisnotactivewhileyouaremak-
ingtheadjustment.
—Yoursettingsareautomaticallystoredand
assignedtotheremotecontrolkeybeing
used.
Messages
Appliesto:vehicleswithAudisideassist
Ifthesideassistswitchesoffautomatically,a
messageappearsintheInfotainmentsystemdis-
play.
Audisideassist:currentlyunavailable.
Sensorvisionrestrictedduetosurroundings.
Seeowner'smanual
Theradarsensorvisionisimpaired.Donotcover
theareainfront ofthesensorswithbikewheels,
stickers,dirtorotherobjects.Cleantheareacov-
eringthesensors,ifnecessary>page73,fig.77.
E]Audisideassist:currentlyunavailable.
Seeowner'smanual
Sideassistcannotbe switchedonatthistimebe-
causethereisamalfunction(forexample,the
batterychargelevelmaybetoolow).
Audisideassist:malfunction!Please
contactService
Thesystemcannotguaranteethatitwilldetect
vehiclescorrectlyandithasswitchedoff.The
sensorshavebeenmovedor arefaulty.Havethe
systemcheckedbyanauthorizedAudidealeror
authorizedAudiServiceFacilitysoon.
Audidriveselect(drive
settings)
Introduction
Appliesto:vehicleswithAudidriveselect
Driveselectmakesitpossibletoexperiencedif-
ferenttypesofvehiclecharacteristicsinonevehi-
cle.Thedrivercanselectfromthreemodes,
Comfort,Auto,andDynamic,usingthesistbut-
toninthecenterconsoleorbyusingtheInfotain-
mentsystem.Thisallowsyoutoswitchbetween
asportyandacomfortabledrivingmode,forex-
ample.IntheIndividualmode,thesettingscan
be
adjustedtoyourpersonalpreferences.This
makesitpossibletocombinesettingssuchasa
sportyenginesettingwithlightsteering.

ZA\WARNING
UsingAudidriveselectincorrectlycanlead to
collisions,otheraccidentsandseriousinju-
ries.
Appliesto:vehicleswithAudidriveselect

Thevehiclesetupineachmodedependsonthe
vehicle'sfeatures.
Engineandautomatictransmission
Dependingonthemode,theengineandauto-
matictransmissionrespondmorequicklyorina
morebalancedmannertoacceleratorpedal
movements.
Suspensioncontrol(Audimagneticride)*
Thesuspensioncontrolusessensorstorecordin-
formationregardingsteeringmovements,brak-
ingandaccelerationoperationsbythedriver,as
wellasinformationabouttheroadsurface,driv-
ingspeed,andload.Withdriveselect,youcan>
75

Assistsystems

adjustthesuspensioncontroltosporty(dynam-
ic),comfortable(comfort)orbalanced(auto).
Steering
Thepowersteeringadapts.Indirectsteeringthat
moveseasilyasincomfortmodeisespecially
suited tolongdrivesonahighway.Thedynamic
modeprovidessporty,directsteering.
Enginesound*
Theenginesoundadaptstothecurrentmode
andcan besubtletosporty.
Insomemodels,themaximumvehiclespeed
canonlybe reachedintheautoanddynamic
modes.
Selectingthedrivingmode
Appliesto:vehicleswith Audidriveselect
You can choosebetweencomfort,auto,dynamic
andindividual.
BFV-0307
,drive
\select
Fig.78Centerconsole:driveselectbutton

BFV-0308


Appliesto:TT RS
Fig.79Steeringwheel:driveselectbutton
76
>Pressthesssbuttonrepeatedlyuntilthede-
sireddrivemodeisdisplayedintheinstrument
cluster/Infotainmentsystemdisplay.Or
>SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle>leftcontrolbutton>Audidrive
select.
»Selectandconfirmthedesiredsetting.


Youcanchangethedrivingmodewhenthevehi-
cleisstationaryorwhiledriving.Iftrafficper-
mits,afterchangingmodes,brieflyremoveyour
footfromtheacceleratorpedalsothatthere-
centlyselectedmodeisalsoactivatedfortheen-
gine.
Comfort-resultsinacomfort-orientedvehicle
calibration
Auto-providesanoverallcomfortableyetdy-
namicdrivingfeelandissuitedforeverydayuse.
Dynamic-givesthedriverasportydrivingfeel
andissuited toasportydrivingstyle.
Individual->page77.

8S1012721BA
Assistsystems

AdjustingtheIndividualmode
Appliesto:vehicleswithAudidriveselect
Youcanadjustthevehiclesettingstoyourpersonalpreferences.
>Pressthesistbutton>Individual>rightcon-
trolbutton,or
>SelectintheInfotainmentsystem:[MENU]but-
ton>Vehicle>leftcontrolbutton>Audidrive
select>Individual>rightcontrolbutton


Afteryouhaveclosedthesettings,youwillauto-
maticallydriveintheIndividual*mode.
Theequipmentinyourvehiclewilldetermine
whichsettingsyoucanadjust.Thefollowingta-
blegivesanoverviewofthecharacteristics.




Systemscomfortautodynamic
Engine/transmissioncomfortablebalancedsporty
Steeringcomfortablebalancedsporty
Suspensioncontrol*comfortablebalancedsporty
Enginesound*subtlebalancedsporty
quattro*balancedbalancedsporty
Appliesto:TTRS:quattrobalancedneutralsporty

G)Tips
YourIndividual*modesettings areautomati-
callystoredandassignedtotheremotecon-
trolkeybeingused.
77

Parkingaid

Parkingaid
Introduction
Appliesto:vehicleswithrearparkingsystem/parkingsystem
plus
Dependingonthevehicleequipment,various
parkingaidswillhelpyouwhenparkingandma-
neuvering.
Therearparkingsystemisanaudible parkingaid
thatwarnsyouofobstaclesbehindthevehicle
=>page79.
Theparkingsystemplusassistsyouwhilepark-
ingbyaudiblyandvisuallywarningyouofobjects
detectedinfrontofandbehindthevehicle
=>page79.
Therearviewcamerashowstheareabehindthe
vehicleintheInfotainmentsystemdisplay.The
linesintherearviewcameraimagehelpyouto
parkormaneuver>page80.

ZAWARNING
—Alwayslookfortrafficandcheckthearea
aroundyourvehiclebylookingatitdirectly
aswell.Theparkingsystemcannotreplace
thedriver'sattention.Thedriverisalways
responsiblewhenenteringorexitingapark-
ingspaceandduringsimilarmaneuvers.
—Pleasenotethatsomesurfaces,suchas
clothing,arenotdetectedbythesystem.
—Sensorsandcamerashaveblindspotsin
whichpeopleandobjectscannotbedetect-
ed.Beespeciallycautiousofsmallchildren
andanimals.
— Thesensorscanbedisplacedbyimpactsor
damagetotheradiatorgrille,bumper,
wheelhousingandtheunderbody.Thepark-
ingsystemmaybeimpairedasaresult.
HaveanauthorizedAudidealerorauthor-
izedAudiServiceFacilitychecktheirfunc-
tion.
—Makesurethesensorsarenotobstructedby
stickers,depositsorothermaterials.Ifthey
are,thesensorfunctioncouldbeimpaired.
Foradditionalinformationoncleaning,see
=page270.

78
@)Note
—Someobjectsarenotdetectedordisplayed
bythesystemundercertaincircumstances:
—objectssuchasbarrierchains,trailerdraw
bars,verticalpolesorfences
—objectsabovethesensorssuchaswallex-
tensions
—objectswithcertainsurfacesorstructures
suchaschainlinkfencesorpowdersnow
—Ifyoucontinuedrivingclosertoalowob-
ject,itmaydisappearfromthe sensor
range.NotethatyouwillnoLongerbe
warnedaboutthisobstacle.
—Maintainenoughdistancefromthecurbto
reducetheriskofdamagetotherims.
G)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.
—Whatappearsinthedisplayisslightlyde-
layed.
— Thesensorsmustbekeptcleanandfreeof
snowandicefortheparkingaidtooperate.