2016 MERCEDES-BENZ GLC-Class engine

Display messagesPossible causes/consequences andMSolutions
#
Check Brake Pad
Wear
The brak epads/lining shav ereached their wear limit.
US Aonly: th e$ red brak esystem warnin glamp is lit while th e
engin eis running .
XVisitaqualified specialist workshop .
G
Inoperative
Oneor mor emain features of th embrace system are malfunc -
tioning.
XVisit aqualified specialist workshop .
Collision Preven‐
tionAssist Plu s
Currently Unavail‐
ableSee Opera‐
tor's Manual
COLLISION PREVENTION ASSIST PLU Sis temporarily no topera-
tional.
Possibl ecauses are:
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 .
Rthesystem is outside th eoperating temperature range.
Rth eon-boar dvoltag eis to olow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
COLLISION PREVENTION ASSIST PLU Sis 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 172).
XRestart th eengine.
Collision Preven ‐
tionAssist Plu s
Inoperative
COLLISION PREVENTION ASSIST PLU Sis temporarily inoperative
due to amalfunction .Adaptive Brake Assis tmay also hav efailed.
XVisit aqualified specialist workshop immediately.
PRE-SAFE Inopera‐
tiv eSee Opera‐
tor's Manual
Importan tfunction sof PRE-SAF E®havefailed. Al lother occupant
safet ysystems ,e.g. air bags ,remain available.
XVisit aqualified specialist workshop immediately.
Display messages26 5
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
PRE-SAFEFunctions
Currently Limited
SeeOperator'sMan‐
ual
PRE ‑S AF E®PLU Sor PRE ‑SAFE®Brake is temporarily inoperative.
Possibl ecauses are:
Rfunction is impaire ddue to heav yrain or snow.
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 .
Rthesystem is outside th eoperating temperature range.
Rth eon-boar dvoltag eis to olow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
PRE ‑S AF E
®PLU Sand PRE ‑S AF E®Brake are 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 172).
XRestart th eengine.
PRE-SAFEFunctions
Limite dSee Opera‐
tor's Manual
PRE ‑S AF E®PLU Sor PRE‑SAFE®Brake is unavailable due to amal-
function .BA SPLU Swit hCross-Traffic Assis tmay also hav efailed.
XVisit aqualified specialist workshop immediately.
266Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Radar Sensors
Dirty See Opera‐
tor's Manual
At leaston eof th efollowing drivin gsystems or drivin gsafet ysys-
tems is temporarily restricted or inoperative:
RPRE-SAF E®PLUS
RPRE-SAF E®Brake
RCOLLISION PREVENTION ASSIST PLU S
RActive LaneKeepin gAssis t
RActive Blind Spot Assis t
RDISTRONIC PLUSwit hSteerin gAssis tand Stop&Go Pilo t
If th erada rsensor system in fron tis dirty, Active Blind Spot Assis t
will no tperform acourse-correcting brak eapplication .
Possibl ecauses are:
Rth esensor sin th eradiato rtrim and/o rin th ebumpers are dirty
Rth efunction of th edrivin gsystem or drivin gsafet ysystem is
impaire ddue to heav yrain or snow
A warnin gtone also sounds.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears. Al ldrivin gsystems or drivin gsafet ysystems are
operative 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 172).
XSwitchof fth eengine.
XClean th esensor sin th efollowing location s (Ypage 348):
Rin theradiato rtrim
Rin th efron tbumper
Rin th erear bumper, particularl yin th emiddle of th erear
bumper
XRestart th eengine.
The display message disappears.
Display messages26 7
On-board computer and displays
Z

Engine
Display messagesPossible causes/consequences andMSolutions
+
Check Coolant
Level See Opera‐
tor's Manual
The coolant level is too low.
!Avoid making long journeys with too little coolant in the engine
cooling system. The engine will otherwise be damaged.
XAdd coolant, observing the warning notes before doing so
(
Ypage 341).
If you have to add coolant frequently:
XContact a qualified specialist workshop and have the engine
cooling system checked.
?The fan motor is faulty.
XAt coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in
mountainous terrain and stop-start traffic.
?
Coolant Too Hot
Stop Vehicle Turn
Engine Off
The coolant is too hot.
A warning tone also sounds.
GWARNING
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.
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 172).
XWait until the engine has cooled down.
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 display message goes out
and the coolant temperature is below 248 ‡ (120 †). Other-
wise, the engine could be damaged.
XPay attention to the coolant temperature display.
If the temperature increases again:
XVisit a qualified specialist workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 248 ‡ (120†) .
276Displa y messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
#
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 172).
XConsult aqualified specialist workshop .
#
StopVehicl eSee
Operator' sManual
The battery is no longer bein gcharged and th ebattery charg elevel
is to olow.
A warnin gtone also sounds.
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 172).
XObserv eth einstruction sin th e# SeeOperator' sManual
display message .
XConsultaqualified specialist workshop .
#
StopVehicl eLeave
Engine Runnin g
The battery charg elevel is to olow.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions. Do no tcontinue drivin g
under any circumstances.
XLeav eth eengin erunning .
XWait until th edisplay message disappear sbefore pullin gaway.
#
Start Engine See
Operator' sManual
The engin eis switched of fand th ebattery charg elevel is to olow.
XSwitc hof felectrica lconsumer sthat you do no tneed, suc has
th erear window defroste rand interio rlighting .
XLeaveth eengin erunning fo r afew minute sor drive alon gdis-
tance .
The battery is bein gcharged.
Display messages27 7
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
4
Check Engine Oil
At NextRefueling
The engin eoil level has dropped to th eminimum level.
A warnin gtone also sounds.
!Avoid lon gjourneys wit hto olittl eengin eoil. The engin ewill
otherwise be damaged.
XChec kth eoil level when next refueling, at th elatest
(
Ypage 339).
XIf necessary, add engin eoil (Ypage 340).
If th eengin eoil need stopping up more often:
XContac t aqualified specialist workshop and hav eth eengin e
checked.
Information on approve dengin eoils can be obtained from aquali-
fie dspecialist workshop or on th eInternet at http:/ /
bevo.mercedes-benz.co m.
8
Fuel Level Low
The fuel level has dropped into the reserve range.
XRefuel at the nearest gas station.
CThere is only a very small amount of fuel in the fuel tank.
XRefuel at the nearest gas station without fail.
8
Gas Cap Loose
The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
If the fuel filler cap is not correctly closed:
XClose the fuel filler cap.
If the fuel filler cap is correctly closed:
XVisit a qualified specialist workshop.
278Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
LaneKeepin g
Assist Inopera‐
tiveorActive
Lan eKeepin g
Assist Inoperative
LaneKeepin gAssis tor Active Lan eKeepin gAssis tis defective.
XVisit aqualified specialist workshop .
Blind SpotAssist
Currently Unavail‐
abl eSee Opera‐
tor's Manualor
Active Blind Spo t
Assist Currently
Unavailable See
Operator'sManual
Blind Spot Assis tor Active Blind Spot Assis tis temporarily inop-
erative .
Possibl ecauses are:
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 .
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Blind Spot Assis tor Active 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 172).
XRestart th eengine.
Blind Spo tAssist
Inoperativeor
Active Blind Spo t
Assist Inoperative
Blind Spot Assistor Active Blind Spot Assis tis defective.
XVisit aqualified specialist workshop .
ParkAssist Can ‐
celed
The driver's doo ris open .
XRepeatth eparkin ggap measuremen tand parkin gprocess wit h
th edriver's doo rclosed .
You touched th emultifunction steerin gwhee lwhile steerin ginter-
vention was active .
XWhilesteerin gintervention is active ,mak esur ethat th emulti-
function steerin gwhee lis no ttouched unintentionally.
The vehicl ehas started to skid and ES P®has intervened.
XUse Active Parking Assistagain later (Ypage 201).
Display messages281
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
ParkAssistInoper ‐
ative
PARKTRONI Cis malfunctionin gor faulty.
XFollow th einstruction sand helpful hints in th e"Problems wit h
PARKTRONIC" section (
Ypage 201).
If th emultifunction display still shows th edisplay message :
XVisitaqualified specialist workshop .
Active Parking Assistis unavailable or faulty.
XSwitc hof fth eignition and restar tth eengine.
If Active Parking Assis tcontinues to be unavailable (the jsymbol
does no tappea rin th emultifunction display):
XVisit aqualified specialist workshop .
ParkAssist
Switched Off
The vehicl eis parked. Awarnin gtone also sounds.
The display message disappear sautomatically.
Ã
Inoperative
DS R(Downhill Speed Regulation )is deactivated due to amalfunc -
tion .
XHaveDS Rchecke dat aqualified specialist workshop .
TrafficSig n
Assist Currently
Unavailable See
Operator' sManual
Traffic Sig nAssis tis 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.
XClean th ewindshield.
If th esystem detects that th ecamera is full yoperational, th edis-
play message disappears.
Traffic Sig nAssis tis operational again .
TrafficSig n
Assist Inoperative
Traffic Sig nAssis tis faulty.
XVisit aqualified specialist workshop .
ë
Off
The HOLD function is deactivated. The vehicl eis skidding.
A warnin gtone also sounds.
XReactivat eth eHOLD function later (Ypage 194).
The HOLD function is deactivated. Whe nth ebrak epedal is firmly
depressed, an activation condition is no tfulfilled .
A warnin gtone also sounds.
XChec kth eactivation condition sfo rth eHOLD function
(
Ypage 194).
282Display messages
On-board computer and displays