2017 MERCEDES-BENZ SLC-Class air condition

Important safety notes
GWARNING
If you operate information systems and com-
munication equipmen tintegrate dinthevehi-
cle while driving ,you will be distracte dfrom
traffic conditions. You could also lose control
of th evehicle. Ther eisariskofana ccident.
Only operate th eequipmen twhen th etraffic
situation permits. If you are no tsuret hatthis
is possible ,park th evehicl epayin gattention
to traffic condition sand operate th eequip-
men twhen th evehicl eiss tationary.
You must observ ethe legal requirements for th e
country in whic hyou are currentl ydriving when
operating th eon-bo ard computer.
GWARNIN G
If th einstrumen tcluste rhas faile dormal-
functioned, you may no trecognize function
restriction sinsystems relevan ttosafety. The
operating safet yofyour vehicl emay be
impaired .Ther eisar iskofana ccident.
Drive on carefully. Hav ethe vehicl echecked
at aq ualified specialist workshop immedi-
ately.
The on-board computer only shows message sor
warning sfromc ertai nsystems in th emultifunc-
tion display. You should therefor emakes ure
your vehicl eisoperating safely at all times .
If th eoperating safet yofyour vehicl eis
impaired ,pull ove rassoonasitiss afetodos o.
Contac taqualified specialist workshop.
Fo rano verview, see th einstrumen tpanel illus-
tration (
Ypage 31).
Display sand operation
Instrumen tcluster lighting
The lighting in th einstrumen tcluster, in th edis-
plays and th econtrols in thevehicl einterior can
be adjusted usin gthe brightness control knob.
The brightness control knob is locate donthe
botto mleftoft heinstrumen tcluste r
(
Ypage 31).
XTurn th ebrightness control knob clockwise or
counter-clockwise.
If you tur nthe ligh tswitch (
Ypage 93 )tot he
Ã, TorL position ,the brightness
will depend upon th ebrightness of th eambi -
en tlight.
The ligh tsensor in th einstrumen tcluste r
automatically control sthe brightness of th e
multifunction display. In daylight, th edisplays
in th einstrumen tcluste rare no tilluminated.
Speedometer with segments
The segments in th espeedometer indicat e
whic hspee drange is available.
RCruis econtro lactivated (Ypage 138):
The segments ligh tupfromt hestore dspee d
to th emaximum speed.
RDistanc ePilot DISTRONI Cisactivated
(Ypage 140):
On eort wo segments in th eset spee drange
ligh tup.
RDistanc ePilot DISTRONI Cdetects avehicl ein
fron tmoving mor eslowly than th estored
speed:
The segments between th espee doft hevehi-
cle in fron tand th estoreds pee dligh tup.
Tachometer
!
Do no tdriveint heoverrevving range, as this
could damag ethe engine.
The red ban dinthetachometer indicates th e
engine's overrevving range.
The fuel suppl yisinterrupted to protect th e
engin ewhen th ered ban disreached.
Outsidet emperatur edisplay
You should pay special attention to road condi-
tion swhen temperatures are aroun dfreezing
point.
Bea rinm indt hatthe outside temperature dis-
play indicates th etem perature measured and
does no trecord th eroad temperature.
The outside temperature display is in th emulti-
function display (
Ypage 165).
Ac hang eint heoutside temperature is shown in
th em ultifunction display after adelay.
Display sand operation163
On-boardc omputer and displays
Z

Display messagesPossible causes/consequences andMSolutions
The yellow!warning lamp lights up and th ered F (USAonly)
or ! (Canada only) indicator lamp flashes .
It is no tpossibl etoapply th eelectric parking brak emanually.
XShift th etransmission to position P.
XVisitaqualified specialist workshop .
$(USA
only)
J(C anada
only)
Check Brake Fluid
Level
There is no tenough brak efluid in th ebrak efluid reservoir .
In addition ,the $ (USAonly) or J (Canada only) warning lamp
lights up in th einstrumen tcluste rand aw arning tone sounds.
GWARNIN G
The braking effec tmay be impaired.
There is ariskofana ccident.
XPull overand stop th evehicl esafely as soo naspossible, payin g
attention to roa dand traffic conditions. Do no tcontinue driving
under any circumstances.
XSecur ethe vehicl eagainst rollin gaway (Ypage 131).
XConsult aqualified specialist workshop .
XDo notadd brak efluid .This does no tcorrect them alfunction .
#
CheckBrakePadWear
The brak epads/linings hav ereached their wear limit.
XVisit aqualified specialist workshop .
G
Inoperative
Oneorm orem ain features of th embrace system are malfunctioning .
XHavethe mbrace system checke dataqualified specialist work-
shop.
PRE-SAFE Inopera‐tiv eSeeOperator' sManual
Importantfunction sofPRE-SAF E®havefailed. Al lother occupant
safet ysystems ,e.g.a ir bags ,remain available.
XVisit aqualified specialist workshop immediately.
ActiveBrakeAssistFunctionsCurrentlyLimite dSee Opera‐tor's Manual
Active Brake Assis tistemporarily inoperative.
Possibl ecauses are:
Rther adar sensor system is temporarily inoperative, e.g. due to elec -
tromagneti cradiation emitted by nearby TV or radi ostation sor
other source sofelectromagneti cradiation
Rthes ystem is outside th eoperating temperature range
Rtheo n-bo ardv oltag eistoolow.
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Active Brake 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).
XRestart th eengine.
184Display messages
On-boardc omputer andd isplays

Display messagesPossible causes/consequences andMSolutions
ActiveBrakeAssistFunctions LimitedSee Operator'sMan‐ual
Active Brake Assis tisunavailable due to amalfunction .
XVisitaqualified specialist workshop .
RadarSensorsDirtySee Operator' sMan‐ual
The radar sensor system is malfunctioning .
Possibl ecauses are:
RDirt on sensor s
RHeavy rain or snow
RWhendrivin goni nter-urban roads without traffic or infrastructure,
e.g. in desert-like area s
At least on edrivin gsystem or drivin gsafet ysystem is malfunctioning
or is temporarily unavailable :
RActive Brake Assist
RDistancePilotD ISTR ONIC
Once th ecaus eoft heproblem is no longer present, th edrivin gand
drive safet ysystems will be available again .The display message dis-
appears.
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).
XSwitc hoff th eengine.
XClean all sensor s(Ypage 240).
XRestart theengine.
The display message disappears.
6
SRSMalfunctionSer ‐viceRequired
The restrain tsystem is malfunctioning .The 6 warning lamp also
lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbetriggered .
There is an increased ris kofinjury.
XVisit aqualified specialist workshop immediately.
Fo rfurther information about th erestrain tsystem, see (
Ypage 37).
6
Front Lef tMalfunc‐tionServic eRequiredorFr ontRight MalfunctionServic eRequired
The restrain tsystem has malfunctioned at th efront on th eleftorr ight.
The 6 warning lamp also lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbetriggered .
There is an increased ris kofinjury.
XVisit aqualified specialist workshop immediately.
Display messages185
On-boardc omputer andd isplays
Z

Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Disabled SeeOperator' sManual
The front-passenger air bag and front-passenger knee bag are deac -
tivated during th ejou rney, although:
Ran adult
or
Rap erson of th ecorre spondin gstatur eisont hefront-passenger seat
If additional force sare applie dtotheseat ,the system may interpret
th eo ccupant's weigh taslower than it actually is.
GWARNIN G
The front-passenger fron tair bag and fron tpassenger knee bag may
no tbet riggered in th eevent of an accident.
There is an increased ris kofinjury.
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).
XSwitc hthe ignition off .
XHavethe occupant get out of th evehicle.
XKee pthe seat unoccupied ,close th efront-pa ssenger door and
switch on th eignition .
XObserv ethe PASSENGER AI RBAG indicator lamp sinthecenter
console and th emultifunction display and chec kthe following:
Seat unoccupied and ignition switched on :
Raself-diagnosis is carrie dout.T he PASSENGER AI RBAG OFFa nd
PASSENGER AI RBAG ON indicator lamp smustligh tups imulta-
neousl yfor approximately six seconds
RtheP ASSENG ER AIRBAG OFFindicator lamp mus tthe nligh tup
and remain lit after th eself-diagnosis .Iftheindicator lamp is on ,
OCS has deactivated th efront-pa ssenger fron tair bag and front-
passenger knee bag (
Ypage 45)
RtheFront Passenger Airbag Enable dSee Operator' sManualorFront Passenger Airbag Disabled See Opera‐tor's Manualdisplay message smustn otbe shown in th emul-
tifunction display
XWait for aperiod of at least 60 seconds until th eneces sarysystem
checks hav ebeen completed.
XMak esuret hatthe display message sdonotappear in th emulti-
function display.
If these condition sare fulfilled ,the front-passenger seat can be occu-
pied again .Whether th ePASSENG ER AIRBAG OFForONi ndicator
lamp remain slit or goe sout depend sonhow OCS classifies th eoccu-
pant.
If th econditi onsa re no tfulfilled ,the system is no toperating correctly.
XVisit aqualified specialist workshop immediately.
Observ ethe additional information on OCS (
Ypage 45).
Display messages187
On-boardc omputer andd isplays
Z

Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Enable dSeeOperator' sManual
The front-passenger air bag and front-passenger knee bag are enabled
during th ejou rney, eve nthough :
Rachild, asmall adult or an objec tweighing less than th esystem' s
weigh tthreshold is locate donthefront-passenger seat
or
Rth ef ront-pa ssenger seat is unoccupied
The system may detec tobjects or force sapplyin gadditional weigh ton
th es eat .
GWARNIN G
The front-passenger fron tair bag and th efront-pa ssenger knee bag
may be triggered unintentionally.
There is an increased ris kofinjury.
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).
XSwitc hthe ignition off .
XOpenthe front-passenger door .
XRemove thechild and th echild restrain tsystem from th efront -
passenger seat .
XMakesuret hatthe re are no objects on th eseat addin gtothe
weight.
The system may otherwise detec tthe additional weigh tand inter-
pre tthe seat occupant's weigh tasgreatertha nita ctually is.
XKeepthe seat unoccupied ,close th efront-pa ssenger door and
switch on th eignition .
XObserv ethe PASSENGER AI RBAG indicator lamp sinthecenter
console and th emultifun ction display and chec kthe following:
Seat unoccupied and ignition switched on :
Raself-diagnosis is carrie dout.T he PASSENGER AI RBAG OFFa nd
PASSENGER AI RBAG ON indicator lamp smustligh tups imulta-
neousl yfor approximately six seconds
RtheP ASSENG ER AIRBAG OFFindicator lamp mus tthe nligh tup
and remain lit after th eself-diagnosis .Iftheindicator lamp is on ,
OCS (Occupant Classification System) has disabled th efront -
passenger fron tair bag and front-passenger knee bag
(
Ypage 45)
Rth eFront Passenger Airbag Enable dSee Operator' sManualorFront Passenger Airbag Disabled See Opera‐tor's Manualdisplay message smustn otbe shown in th emul-
tifunction display
XWait for aperiod of at least 60 seconds until th eneces sarysystem
checks hav ebeen completed.
XMak esuret hatthe display message sdonotappear in th emulti-
function display.
If these condition sare fulfilled ,the front-passenger seat can be occu-
pied again .Whether th ePASSENG ER AIRBAG OFForONi ndicator
188Display messages
On-boardc omputer andd isplays

Engine
Display messagesPossible causes/consequences andMSolutions
?
CheckCoolantLevelSee Operator'sMan‐ual
The coolant levelistoolow.
!Avoid making longj ourneys with to olittle coolant in th eengine
cooling system. The engine will otherwise be damaged.
XAdd coolant ,observing th ewarning note sbefore doings o
(Ypage 233).
XIf you nee dtoadd coolant mor eoften than usual, have th eengine
coolant system checked at aqualified specialist workshop.
?The fan motor is faulty.
XIf th ecoolant temperatur egauge is below the Hmarking
(Ypage 164), driv eontothenex tqualified specialist workshop.
XAvoid heavyl oads on theengine as you do so, e.g .driving in moun-
tainous terrain and stop-and-go traffic.
?
CoolantT oo HotStopVehicleT urnEngine Off
The coolant is to ohot.
Aw arning tone also sounds.
GWARNING
Do no tdrivew hen your engine is overheated. This can caus esome
fluids whichm ay have leaked int othe engine compartmen ttocatch
fire.
Steam from th eoverheate dengine can also caus eserious burn swhich
can occur jus tbyopening th ehood.
Thereisar isk of injury.
XPull overand stop th evehicle safely and switch off th eengine ,pay-
ing attention to road and traffic conditions.
XSecure th evehicle against rolling away (Ypage 131).
XLeavet hevehicle and keep asafe distanc efromt hevehicle until the
engine has cooled down.
XMakes ure that th eair supply to th eengine radiator is no tblocked,
e.g .bys now, slush or ice.
XDo no tstart th eengine again until th edisplay message goes out and
th ec oolant temperatur egauge is below the Hmarking
(
Ypage 164). Otherwise, th eengine coul dbedamaged.
XPay attention to th ecoolant temperatur egauge, observing the
warning note s(Ypage 233).
XIf thetem peratur eincreases again,v isitaq ualified specialist work-
shop immediately.
Under normal operatin gconditionsa nd at thecorrec tcoolant level,
th ec oolant temperatur egauge may rise to the Hmarking
(
Ypage 164).
190Displa ymessages
On-boardc omputer and displays

Display messagesPossible causes/consequences andMSolutions
LaneKeepin gAssistCurrently Unavaila‐ble See Operator' sManual
LaneKeepin gAssistisd eactivated and temporarily inoperative.
Possibl ecauses are:
Rthew indshield in th ecamera' sfield of vision is dirty
Rvisibilit yisimpaire ddue to heav yrain ,sno worf og
Rthere hav ebeen no lan emarking sfor an extended period
Rthel an em arking sare worn, dark or covered, e.g. by dir torsnow
Whe nthe causes state dabov enol onger apply, th edisplay message
disappears.
Lan eKeepin gAssistiso 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).
XClean th ewindshield.
Lan eKeepin gAssistInoperativeLaneKeepin gAssistisf aulty.
XVisit aqualified specialist workshop .
Blind SpotAssistCurrently Unavaila‐ble See Operator' sManual
Blind Spot Assististemporarily inoperative.
Possibl ecauses are:
Rfunction is impaire ddue to heav yrain or snow
Rther adar sensor system is outside th eoperating temperature range
Rther adar sensor system is temporarily inoperative, e.g. due to elec -
tromagneti 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 240).
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 .
Display messages193
On-boardc omputer andd isplays
Z

Display messagesPossible causes/consequences andMSolutions
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 241).
XChec kthe tire pressur e(Ypage 262).
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 241).
TirePress.Monito rCurrently Unavaila‐ble
Becausethere is interferenc efromas tron gs ource of radi owaves, no
signals from th etirep ressur esensor sare detected. The tire pressur e
monitor is temporarily malfunctioning .
XDrive on.
The tire pressur emonitor restarts automatically as soo nasthe
problem has been resolved.
TirePress .Sen‐sor(s) Missin gThere is no signal from th etirep ressur esensor of on eorseveral
wheels. The pressur eoftheaffecte dtired oes no tappear in th emul-
tifunction display.
XHav ethe fault ytirep ressur esensor replace dataqualified special -
ist workshop .
Display messages197
On-boardc omputer andd isplays
Z