2016 MERCEDES-BENZ SLK-Class air condition

Display messagesPossible causes/consequences andMSolutions
Classification System) has disabled thefront-passenger fron t
air bag (
Ypage 49 )
RtheFrontPassengerAirbagEnable dSeeOperator' s
ManualorFrontPassengerAirbagDisabledSeeOper‐
ator's Manualdisplay message smus tno tbe shown in th e
multifunction display
XWait fo r aperiod of at leas t60 seconds until th enecessar ysys-
te m checks hav ebeen completed.
XMak esur ethat th edisplay message sdo no tappea rin th emul-
tifunction display.
If these condition sare fulfilled ,th efront-passenger seat can be
occupied again .Whether th ePASSENGER AI RBA GOF For ON
indicato rlamp remain slit or goe sout depend son how OCS clas-
sifies th eoccupant .
If th econdition sare no tfulfilled ,th esystem is no toperating cor-
rectly.
XVisit aqualified specialist workshop immediately.
Observ eth eadditional information on OCS (
Ypage 49).
Lights
i
Vehicles wit hLE Dbulbs in th eligh tclusters :
The display message fo rth ecorrespondin glamp only appears when all of th eLEDs in th e
lamp hav efailed.
Display messagesPossible causes/consequences and MSolutions
b
Check LeftCorner ‐
ing LightorCheck
Right Cornering
Light
The lef tor right-hand cornering ligh tis defective.
XChec kwhether you are permitte dto replac eth ebulb yourself
(
Ypage 115).
or
XVisit aqualified specialist workshop .
b
Check LeftLow
Bea morCheck
Right Low Bea m
The leftor right-hand low-beam headlamp is defective.
XChec kwhether you are permitte dto replac eth ebulb yourself
(
Ypage 115).
or
XVisit aqualified specialist workshop .
224Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
?
CoolantToo Hot
Sto pVehicl eTur n
Engine Off
The coolan tis to ohot .
A warnin gtone also sounds.
GWARNIN G
Do notdrive when your engin eis overheated. This can caus esom e
fluids whic hmay hav eleaked into th eengin ecompartmen tto
catch fire.
Steam from th eoverheated engin ecan also caus eserious burn s
whic hcan occur jus tby openin gth ehood.
There is aris kof injury.
XPull ove rand stop th evehicl esafely and switch of fth eengine,
payin gattention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 160).
XLeaveth evehicl eand keep asaf edistanc efrom th evehicl euntil
th eengin ehas cooled down .
XMakesur ethat th eair supply to th eengin eradiato ris no t
blocked, e.g. by snow, slus hor ice .
XDo no tstart th eengin eagain until th edisplay message goe sout
and th ecoolan ttemperature is belo w24 8 ‡ (120†). Other -
wise ,th eengin ecould be damaged.
XPay attention to th ecoolan ttemperature display.
XIf th etemperature increase sagain ,visit aqualified specialist
workshop immediately.
Under normal operating condition sand wit hth especified coolan t
level, th ecoolan ttemperature may ris eto 24 8 ‡(120†).
#
SeeOperator' sMan‐
ual
The battery is no tbein gcharged.
A warnin gtone also sounds.
Possibl ecauses are:
Radefective alternato r
Ratorn poly-V-belt
Ramalfunction in th eelectronics
!Do no tcontinue driving. The engin ecould otherwise overheat .
XPull overand stop th evehicl esafely and switch of fth eengine,
payin gattention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 160).
XConsult aqualified specialist workshop .
228Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
LaneKeepin g
Assist Currently
Unavailable See
Operator' sManual
Lan eKeepin gAssis tis deactivated and temporarily inoperative.
Possibl ecauses are:
Rth ewindshield in th ecamera' sfield of vision is dirty.
Rvisibility is impaire ddue to heav yrain ,snow or fog.
Rthere hav ebeen no lan emarking sfo ran extended period.
Rth elan emarking sare worn, dark or covered, e.g. by dir tor snow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Lan eKeepin gAssis tis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 160).
XClean th ewindshield.
Lan eKeepin g
Assist Inoperative
LaneKeepin gAssis tis faulty.
XVisit aqualified specialist workshop .
Blind SpotAssist
Currently Unavail‐
abl eSee Opera‐
tor's Manual
Blind Spot Assis tis temporarily inoperative. Possibl ecauses are:
Rth esensor sare dirty.
Rfunction is impaire ddue to heav yrain or snow.
Rth erada rsensor system is outside th eoperating temperature
range.
Rth erada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion sor other source sof electromagnetic radiation .
The yello w9 indicato rlamp salso ligh tup in th eexterio rmir -
rors.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Blind Spot Assis tis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 160).
XClean th esensor s (Ypage 285).
XRestart th eengine.
Display messages23 1
On-board computer and displays
Z

Tires
Display messagesPossible causes/consequences andMSolutions
Check Tire Pres‐
sure Soon
Canada only:
The tire pressure loss warning system has detected a significant
loss in pressure.
A warning tone also sounds.
Possible causes:
Ryou have changed the positions of the wheels and tires or instal-
led new wheels and tires.
Rthe tire pressure in one or more tires has dropped
GWARNING
Tire pressures that are too low pose the following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 160).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (
Ypage 291).
XCheck the tire pressures and, if necessary, correct the tire pres-
sure.
XRestart the tire pressure loss warning system when the tire
pressure is correct (
Ypage 315).
Check Tire Pres‐
sure Then Restart
Run Flat Indicator
Canada only:
The tire pressure loss warning system generated a display mes-
sage and has not been restarted since.
XSet the correct tire pressure in all four tires.
XRestart the tire pressure loss warning system (Ypage 315).
RunFlatIndicator
Inoperative
Canada only:
The tire pressure loss warning system is faulty.
XVisit a qualified specialist workshop.
234Displa y messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Please Correct
TirePressure
The tire pressur eis to olow in at leas ton eof th etires ,or th etire
pressur edifference between th ewheels is to ogreat.
XChec kth etire pressures at th enext opportunity (Ypage 316).
XIf necessary, correc tth etire pressure.
XRestart th etire pressur emonitor (Ypage 318).
TirePressureSoonThe tire pressur ein on eor mor etires has dropped significantly.
The whee lposition is shown in th emultifunction display.
A warnin gtone also sounds.
GWARNIN G
Tirepressures that are to olow pos eth efollowing hazards :
Rthey may burst, especially as th eload and vehicl espeed
increase .
Rthey may wear excessivel yand/o runevenly, whic hmay greatl y
impair tire traction .
Rthedrivin gcharacteristics ,as well as steerin gand braking, may
be greatl yimpaired.
There is aris kof an accident.
XStop th evehicl ewithout makin gany sudden steerin gor brakin g
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 160).
XCheckth etires and ,if necessary, follow th einstruction sfo r a
flat tire (
Ypage 291).
XCheckth etire pressur e (Ypage 316).
XIf necessary, correc tth etire pressure.
Warnin gTir eMal ‐
function
The tire pressur ein on eor mor etires has dropped suddenly. The
whee lposition is shown in th emultifunction display.
GWARNIN G
Drivingwit h a flat tire poses aris kof th efollowing hazards :
Raflat tire affects th eabilit yto steer or brak eth evehicle.
Ryou could los econtrol of th evehicle.
Rcontinued drivin gwit h a flat tire will caus eexcessive heat build-
up and possibl y afire.
There is aris kof an accident.
XStop th evehicl ewithout makin gany sudden steerin gor brakin g
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 160).
XCheckth etires and ,if necessary, follow th einstruction sfo r a
flat tire (
Ypage 291).
Display messages235
On-board computer and displays
Z

Safety systems
ProblemPossible causes/consequences andMSolutions
$(USA only)
J (Canada only)
The red brake system
warning lamp comes on
while the engine is run-
ning. A warning tone
also sounds.There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 160).
XDo not add brake fluid. Adding more will not remedy the mal-
function.
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS (Anti-lock Braking System) is deactivated due to a malfunc-
tion. Therefore, BAS (Brake Assist), COLLISION PREVENTION
ASSIST PLUS, ESP
®(Electronic Stability Program), PRE ‑SAFE®,
the HOLD function and hill start assist, for example, are also deac-
tivated.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic trans-
mission, will not be available.
Warning and indicator lamps243
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.The coolant level is too low.
If the coolant level is correct, the airflow to the engine radiator may
be blocked or the electric engine radiator fan may be malfunc-
tioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
XObserve the additional display messages in the multifunction
display.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 160).
XLeave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
XCheck the coolant level and add coolant, observing the warning
notes (
Ypage 279).
XIf you have to add coolant frequently, have the engine cooling
system checked.
XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
XDo not start the engine again until the coolant temperature is
below 248‡(120 †). Otherwise, the engine could be damaged.
XDrive to the nearest qualified specialist workshop.
XAvoid subjecting the engine to heavy loads, e.g. driving in moun-
tainous terrain, and stop-and-go traffic.
?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning. A warning tone
also sounds.The coolant temperature has exceeded 248 ‡ (120 †). The air-
flow to the engine radiator may be blocked or the coolant level may
be too low.
GWARNING
The engine is not being cooled sufficiently and may be damaged.
Do not drive when your engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catch fire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is a risk of injury.
XObserve the additional display messages in the multifunction
display.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 160).
250Warning and indicator lamps
On-board computer and displays

Tires
ProblemPossible causes/consequences andMSolutions
h
The yellow combination
low tire pressure tell-
tale/TPMS malfunction
telltale for the TPMS
(pressure loss or mal-
function) is lit.The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
GWARNING
Tire pressures that are too low pose the following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 160).
XObserve the additional display messages in the multifunction
display.
XCheck the tires and, if necessary, follow the instructions for a
flat tire (
Ypage 291).
XCheck the tire pressure (Ypage 316).
XIf necessary, correct the tire pressure.
h
The yellow combination
low tire pressure tell-
tale/TPMS malfunctiontelltale for the TPMS
(pressure loss or mal-
function) flashes for
approximately one
minute and then
remains lit.The tire pressure monitor is faulty.
GWARNING
The system is possibly unable to recognize or register low tire
pressure.
There is a risk of an accident.
XObserve the additional display messages in the multifunction
display.
XVisit a qualified specialist workshop.
252Warning and indicator lamps
On-board computer and displays