2018 MERCEDES-BENZ SLC ROADSTER ECU

Drivingsystems
Display messagesPossible causes/consequences an dMSolutions
À
Attention Assist :TakeaB reak!
Based on certain criteria, ATTENTION ASSIST has detecte dfatigue or
al ackofc oncentrat ion on thepartoft hedriver .Awarnin gtonea lso
sounds.
XIf necessary, take abreak .
Durin glon gjou rneys, take regular break singoodt imesoy ou get
enough rest.
À
Attention AssistInoperative
ATTENTION ASSIST is inoperative .
XVisitaqualified specialis tworkshop .
ë
Off
The HOLD function is deactivated. The vehicle is skidding .
Aw arnin gtonea lso sounds.
XReactivat ethe HOLD function later (Ypage 148).
LaneKeepin gAssistCurrently Unavaila‐ble See Operator' sManual
LaneKeepin gAssistisd eactivated and temporarily inoperative .
Possible causes are :
RThe windshield in th ecamera's field of vision is dirty.
RVisibilit yisimpaire ddue to heav yrain ,sno worf og.
RThere hav ebeennol anem arking sfor an extended period
RThe lan emarking sare wor naway, dar korcovered up, e.g. by dir tor
snow
Whe nthe causes stated abov enolonger apply ,the display messag e
disappears .
Lan eKeepin gAssistiso perational again .
If th edisplay messag edoesn otdisappear:
XPull over and stop th evehicle safely as soo naspossible, payin g
attention to road and traffic conditions.
XSecur ethe vehicle against rollin gaway (Ypage 131).
XClean th ewindshield .
LaneKeepin gAssistInoperativeLaneKeepin gAssistisf aulty.
XVisit aqualified specialis tworkshop .
Display messages193
On-boardc omputer andd isplays
Z

Display messagesPossible causes/consequences andMSolutions
Blind SpotAssistCurrently Unavaila‐ble See Operator' sManual
Blind Spot Assististemporarily inoperative.
Possibl ecauses are:
RFunction is impaire ddue to heav yrain or snow.
RThe radar sensor system is outside th eoperating temperature
range.
RThe radar sensor system is temporarily inoperative, e.g. due to
electromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation .
The yellow 9indicator lamp salso ligh tupint heexterio rmirrors.
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Blind Spot Assis tisoperational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XClean th esensor s(Ypage 242).
XRestart th eengine.
Blind Spo tAssistInoperativeBlind Spot Assis tisfaulty.
The yellow 9indicator lamp salso ligh tupint heexterio rmirrors.
XVisit aqualified specialist workshop .
ParkingGuidanceInoperativeParking Guidance is malfunctioning (Ypage 152).
XRestart theengine.
If th emultifunction display still shows th edisplay message :
XVisitaqualified specialist workshop .
ParkingGuidanceCanceledParking Guidance is deactivated.
Possibl ecauses are:
RThe vehicl eisskidding.
RThe sensor sare dirty.
RAm alfunction has occurred .
Aw arning tone also sounds.
XReactivat eParking Guidance later (Ypage 152).
If th emultifunction display does no tsho wt he parking spac esymbol at
speeds belo w19mph (30 km/h):
XClean th esensor s(Ypage 242).
XRestart th eengine.
If th emultifunction display still does no tsho wt he parking spac esym-
bol at speeds belo w19mph (30 km/h):
XVisitaqualified specialist workshop .
194Display messages
On-boardcomputer andd isplays

Display messagesPossible causes/consequences andMSolutions
Parking Guidance has been deactivated because you are no longer
followingthe recommended path.
XPark again and ,while doin gso, observ ethe display message sinthe
multifunction display.
Parkin gGuidanceFinishedThe vehicl eisparked. Awarning tone also sounds.
The display message disappear sautomatically.
Distance Pilot OffDistanc ePilotD ISTR ONICisd eactivated (Ypage 140).
If it was deactivated automatically, awarning tone also sounds.
Distance Pilot NowAvailableDistanc ePilotD ISTR ONICiso perational again after having been tem-
porarily unavailable .You can no wreactivat eDistance Pilot
DISTRONI C(
Ypage 140).
Distance Pilot Cur ‐rently UnavailableSee Operator'sMan‐ual
Distanc ePilotD ISTR ONICist emporarily inoperative.
Possibl ecauses are:
RThe radar sensor system is temporarily inoperative, e.g. due to
electromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation .
RThe system is outside th eoperating temperature range.
RThe on-boar dvoltag eistoolow.
Aw arning tone also sounds.
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Distanc ePilotD ISTR ONICiso perational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XRestart th eengine.
DistancePilotInop‐erativ eDistanc ePilotD ISTR ONICism alfunctioning .
Aw arning tone also sounds.
XVisit aqualified specialist workshop .
Distance Pilot Sus‐pendedYou havedepressed th eaccelerato rpedal .Distance PilotDISTR ONIC
is no longer controllin gthe speed of th evehicle.
XRemove your foo tfromt heaccelerato rpedal .
DistancePilot ---mphAcondition for activating Distance Pilot DISTRONIC has not been met.
XCheck the activation conditions for Distance Pilot DISTRONIC
(Ypage 140).
Cruise Control OffCruise control has been deactivated.
Ifaw arning tone also sounds, cruise control has deactivated auto-
matically (
Ypage 138).
Display messages195
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Cruise Control---mphCruis econtro lcanno tbea ctivated, since no tall of th eactivation con-
dition shaveb een met .
XCheckthe activation condition sfor cruise control (Ypage 138).
CruiseControlInop‐erativeCruisecontro lismalfunctioning .
Aw arning tone also sounds.
XVisit aqualified specialist workshop .
Tires
Display messagesPossible causes/consequences and MSolutions
CheckTirePressureSoonCanada only:
The tire pressur eloss warning system has detecte dasignificant loss
in pressure.
Aw arning tone also sounds.
Possibl ecauses:
Ryou hav echanged th eposition softhewheels and tires or installed
ne ww heels and tires
Rthet irep ressur einoneor mor etires has dropped
GWARNIN G
Tir ep ressures that are to olow pos ethe followin ghazards :
Rthey may burst, especially as th eload and vehicl espeed increas e
Rthey may wear excessivel yand/o runevenly, whic hmay greatl y
impair tire traction .
Rthed rivin gcharacteristics ,aswell as steering and braking ,may be
greatl yimpaire d
There is ariskofana ccident.
XStop thevehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sasyou do so.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XChec kthe tires and ,ifneces sary, follow th einstruction sfor aflat
tire (Ypage 246).
XChec kthe tire pressures and ,ifneces sary, correc tthe tire pressure.
XRestart th etirep ressur eloss warning system when th etirep res-
sur eisc orrect (Ypage 267).
CheckTirePressureThenRestar tRunFlatIndicator
Canada only:
The tire pressur eloss warning system generated adisplay message
and has no tbeen restarte dsince .
XSetthe correc ttirep ressur einall fourtires .
XRestart th etirep ressur eloss warning system (Ypage 267).
196Display messages
On-boardcomputer andd isplays

Display messagesPossible causes/consequences andMSolutions
Run FlatIndicatorInoperativeCanada only:
The tire pressur eloss warning system is faulty.
XVisit aqualified specialist workshop .
PleaseCorrectTirePressureUSAo nly:
The tire pressur eistoolow in at least on eofthetires ,ort hetire
pressur edifference between th ewheels is to ogreat.
XChec kthe tire pressures at th enexto pportunity (Ypage 267).
XIf necessary, correc tthe tire pressure.
XRestart th etirep ressur emonitor (Ypage 270).
TirePressure Soo nThe tire pressur einoneor mor etires has dropped significantly. The
whee lposition is shown in th emultifunction display.
Aw arning tone also sounds.
GWARNIN G
Tir ep ressures that are to olow pos ethe followin ghazards :
Rthey may burst, especially as th eload and vehicl espeed increas e
Rthey may wear excessivel yand/o runevenly, whic hmay greatl y
impair tire traction .
Rthed rivin gcharacteristics ,aswell as steering and braking ,may be
greatl yimpaire d
There is ariskofana ccident.
XStop thevehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sasyou do so.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XChec kthe tires and ,ifneces sary, follow th einstruction sfor aflat
tire (Ypage 246).
XChec kthe tire pressur e(Ypage 267).
XIf necessary, correc tthe tire pressure.
Warnin gTireM al‐functionThe tire pressur einoneor mor etires has dropped suddenly. The whee l
position is shown in th emultifunction display.
GWARNIN G
Drivin gwithaf lat tire poses ariskoft hefollowin ghazards :
Raflat tire affects th eabilit ytos teer or brak ethe vehicl e
Ryou could lose control of th evehicle.
Rcontinued drivin gwithaf lat tire will caus eexces sive heat build-up
and possibl yafire
There is ariskofana ccident.
XStop thevehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sasyou do so.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XChec kthe tires and ,ifneces sary, follow th einstruction sfor aflat
tire (Ypage 246).
Display messages197
On-boardc omputer andd isplays
Z

Display messagesPossible causes/consequences andMSolutions
OnlySelect Par k(P)WhenVehicl eisStationar y
The vehicleismoving.
XPull ove rand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XShift th etransmission to position j.
Apply Brake toSelectRYou haveattempte dtoshift from position hto position k.
XDepress thebrak epedal .
XShift th etransmission to position k.
ServiceRequiredDoNot Shift GearsVisit Dealer
You canno tchang et he transmission position due to amalfunction .
Aw arning tone also sounds.
If transmission position his selected:
XDrive to aqualified specialist workshop without shifting th etrans -
mission from position h.
If position k,iorj is selected:
XNotify aqualified specialist workshop or breakdown service.
ReversingNotPossi‐bleServic eRequiredYou can no longer shift to transmission position kdue to amalfunc -
tion .
Transmission position sj, iorh continu etobea vailable.
Aw arning tone also sounds.
XVisit aqualified specialist workshop .
Transmission Mal‐function StopAmalfunction has occurred in th emechanical transmission compo -
nents.
Aw arning tone also sounds. The transmission shift sautomatically to
position i.
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XShift th etransmission to position j.
XSecurethe vehicl eagainst rollin gaway (Ypage 131).
XNotify aqualified specialist workshop or breakdown service.
Sto pVehicl eLeaveEngineRunnin gWaitTransmission Cool‐ing
The transmission has overheated. Pullin gaway can be temporarily
impaire dornotpossible.
XPull ove rand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions. Do no tcontinue driving
under any circumstances.
XWait until th edisplay message disappear sbefore pullin gaway.
Auxiliary Batter yMalfunctionThe auxiliary battery for th eautomatic transmission is no longer bein g
charged.
XVisit aqualified specialist workshop at th enexto pportunity.
XUnti lthen, always shift th etransmission to position jbefore you
switch off th eengine.
XBefor eleaving th evehicle, apply th eelectric parking brake.
Display messages199
On-boardc omputer andd isplays
Z

Display messagesPossible causes/consequences andMSolutions
NThe trunk lid is open.
XClosethe trunk lid.
MThe hoo disopen.
GWARNIN G
The open hoo dmay bloc kyour vie wwhen th evehicl eisinm otion.
There is ariskofana ccident.
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XClosethe hood.
CAt least on edoor is open .Awarning tone also sounds.
XCloseall th edoors.
Ð
Power Steering Mal ‐function See Opera‐tor's Manual
The powersteering is malfunctioning .
Aw arning tone also sounds.
GWARNIN G
You will need to use mor eforce to steer .
There is ariskofana ccident.
XCheckwhether you are able to apply th eextra force required.
XIf you ar eabletos teer safely: carefully drive on to aqualified
specialist workshop .
XIf you areunable to steer safely: do notdrive on .Contac tthe
neares tqualified specialist workshop .
J
TrunkPartitionOpen
The trunk partition is open or th etrunk is loade dtoo high .
XStow th eload suc hthatthe trunk partition can close unhindere d
and is no tpushed upwards.
XClos ethe trunk partition (Ypage 80).
Phone No Servic eYour vehicleisoutside th enetwork provider' stransmitter/receiver
range.
XWait until th emobile phone operational readiness symbol appear s
in th emultifunction display.
K
Decrease Speed
You wante dtoopen th eroofw hile th evehicl ewas in motion .
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XOpe nthe roo f(Ypage 78).
K
Vario-Roo fLowering
The roo fisnotfull yopened or closed .The hydraulic sare depressur-
ized.
XFull yopen or close th eroof(Ypage 78).
200Display messages
On-boardc omputer andd isplays

Display messagesPossible causes/consequences andMSolutions
Â
ReplaceKey Batter y
The SmartKey battery is discharged.
XChange thebattery (Ypage 68) .
Â
Don't Forget You rKey
The SmartKey is notintheignition lock. You hav eopened th edriver's
door wit hthe engin eswitched off .
The multifunction display shows th edisplay message amaximum of
60 seconds and is simply areminder.
XTak ethe SmartKey wit hyou when you leav ethe vehicle.
Â
Key Not Detected(redd isplay message )
The SmartKey is no tinthevehicle.
Aw arning tone also sounds.
If th eengineiss witched off ,you can no longer loc kthe vehicl ecen-
trally or start th eengine.
XPull ove rand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XLocate th eSmartKey.
XPress aon thesteering whee ltoc onfir mthedisplay message .
Becausethe re is interferenc efromas tron gs ource of radi owaves, th e
SmartKey is no tdetecte dwhilstthe engin eisrunning.
Aw arning tone also sounds.
XPull ove rand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XInser tthe SmartKey int othe ignition loc kand bring int okeymode.
Â
Key Not Detected(whit edisplay message )
The SmartKey is currentl yundetected.
XChange th elocation of th eSmartKey in th evehicle.
If th eSmartKey still canno tbedetected:
XInsertthe SmartKey int othe ignition loc kand tur nittot hedesire d
position .
Â
Remove 'Start 'But‐ton and Insert Key
The SmartKey is continually undetected.
KEYLESS-GO is temporarily malfunctioning or is defective. Awarning
tone also sounds.
XInser tthe SmartKey int othe ignition loc kand tur nittot hedesire d
position .
XVisitaqualified specialist workshop .
Warning and indicat orlamps
Gene raln otes
Some systems carry out aself-diagnosis when th eignition is switched on .Therefore ,som eindicator
and warning lamp smay ligh tuporf lashtem porarily. This behavio risnon-criti cal.These indicator
202Warning andi ndicator lamps
On-board computera nd displays