2016 MERCEDES-BENZ METRIS start stop button

Display messagesPossible causes/consequences andMSolutions
Collision Preven‐tionAssist Cur ‐rentlyUnavail.SeeOper. Manual
COLLISION PREVENTION ASSIST PLU Sistemporarily inoperative.
Possibl ecauses:
RThe sensor sinthefron tbumper are dirty.
RThe function is impaire ddue to heav yrain or snow.
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.
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout and COLLISION PREVENTION ASSIST is operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicle, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XSwitc hoff th eengine.
XClean th esensor sinthefron tbumper (Ypage 257).
XRestart th eengine.
Lan eKeepin gAssistInoperativeLaneKeepin gAssistisf aulty.
XVisit aqualified specialist workshop .
LaneKeepin gAssistCurrently Unavail.See Oper. Manual
LaneKeepin gAssistisd eactivated and temporarily inoperative. Pos -
sibl ecauses:
RThe windshield is dirty in th ecamera' sfield of vision .
RVisibilityisimpaire ddue to heav yrain ,sno worf og.
RThere are no lan emarking sfor an extended period of time.
RThe lan emarking sare wor naway, dark or covered, e.g. by dir tor
snow.
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout and Lan eKeepin gAssistiso perational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicle, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XClean th ewindshield.
Cruise Contro lLDC_Spd_DsrspeedUnit
Aconditi on for activating cruise control has no tbeen met .
You hav etried to store aspeed belo w20m ph(30 km/ h)for example.
XIf conditions permit, drive faster than 20 mph (30 km/h )and store
the speed.
XCheck the activation conditions for cruis econtrol (Ypag e140).
214Display messages (vehiclesw iths teering wheel buttons)
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Blind SpotAssistInoperativeBlind Spot Assis tisfaulty.
XVisit aqualified specialist workshop .
Blind SpotAssistCurrently Unavail.See Operator' sMan‐ual
Blind Spot Assis tistemporarily inoperative. Possibl ecauses:
RYou hav eattached atrailer .
RThe sensor sintherear bumper are dirty.
RThe function is impaire ddue to heav yrain or snow.
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.
Once th ecauses listed abov enolonger apply, th edisplay message
goe sout and Blind Spot Assis tisoperational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicle, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XSwitc hoff th eengine.
XClean th esensor sintherear bumper (Ypage 257).
XRestart theengine.
Display message s(vehicles wit hsteering whee lbuttons)21 5
On-board computera nd displays
Z

Tires
Display messagesPossible causes/consequencesand MSolutions
AdjustTirePressureThe tire pressure is too lo winatleastone of the tires, or the tire
pressure differenc ebetween the wheels is too great.
XCheck the tire pressure at the next opportunity (Ypage 274).
XIf necessary,c orrect the tire pressure.
XRestart the tire pressure monitor (Ypage 277).
Check TiresAn additional warning tone sounds.
The tire pressure in one or mor etiresh asdropped significantly. The
displa yshows the whee lposit ion.
GWARNING
Underinflated tire sposet he following risks:
RThe tire smayburst, especially as the load and vehicl espeed
increase.
RThe tire smaywear excessivel yand/or unevenly, which mayg reatly
impai rtire traction.
RThe handling as well as steerin gand braking characteristics mayb e
severely affected.
There is ariskofana ccident.
XStop the vehicl ewithou tmaking any sudden steerin gorbraking
maneuvers. Pa yattentio ntothe trafficc onditions whil edoing so.
XSecure the vehicl etoprevent it fromr olling away (Ypage 132).
XCheck the tiresand,ifn ecessary,c hange the whee l(Ypage 286).
XCheck the tire pressure (Ypage 274).
XIf necessary,correct the tire pressure.
WarningTireM al‐functionThe tire pressure in one or mor etire sh asdropped suddenly. The dis-
play shows the whee lposit ion.
GWARNING
Driving with aflatt ire poses ariskoft he following hazards:
RAflatt ire affects the ability to stee rorbrake the vehicle.
RYouc ould thenl osec ontro lofthe vehicle.
RContinued drivin gwithaf latt ire will cause excessive heat build-up
and possibl yafire.
There is ariskofana ccident.
XStop the vehicl ewithou tmaking any sudden steerin gorbraking
maneuvers. Pa yattentio ntothe trafficc onditions whil edoing so.
XSecure the vehicl etoprevent it fromr olling away (Ypage 132).
XCheck the tiresand,ifn ecessary,c hange the whee l(Ypage 286).
TirePressure Moni‐tor CurrentlyUnavailable
Due to asource of radi ointerference, no signals can be receive dfrom
the whee lsensors. The tire pressure monitor is temporaril ymalfunc-
tioning.
The tire pressure monitor restarts automaticall yassoona sthe prob-
le mh asbeen solved.
216Displa ymessage s(vehicles wit hsteering whee lbuttons)
On-board computera nd displays

Display messagesPossible causes/consequences andMSolutions
Wheel Sensor(s)MissingThere is no signal from th etirep ressur esensor of on eorseveral
wheels. The pressur eoftheaffecte dtireisn otshown in th edisplay.
XHav ethe fault ytirep ressur esensor replace dataqualified special -
ist workshop .
TirePressure Moni‐tor Inoperative NoWheel Sensor s
The wheels installed do no thaves uitable tire pressur esensors. The
tire pressur emonitor is deactivated.
XInstall wheels wit hsuitable tire pressur esensors.
The tire pressur emonitor is activated automatically after drivin gfor
af ew minutes.
Tir ePress.Monito rInoperativeThe tire pressur emonitor is malfunctioning .
XVisitaqualified specialist workshop .
Vehicle
Display messagesPossible causes/consequences and MSolutions
Shiftto'P'or'N'to Start EngineYou haveattempte dtostart th eenginew itht he transmission in posi-
tion Ror D.
XShift th etransmission to position Por N.
Auxiliary Batter yMalfunctionThe auxiliary battery for th etransmission is no longer bein gcharged.
XVisit aqualified specialist workshop .
Apply Brake toShift from'P'You hav eattempte dtomovet he transmission selector lever to posi-
tion D,Ror Nwithout depressing th ebrak epedal .
XDepress th ebrak epedal .
RiskofR olling:TransmissionNotinP
An additional warning tone sounds. The driver's door is open and th e
transmission is in position R,N or D.
XShift th etransmission to position P.
XSecurethe vehicl etopreventitfromr ollin gaway (Ypage 132).
Servic eRequiredDoNot Shift GearsVisit Dealer
An additional warning tone sounds. You canno tchang et he transmis -
sion position due to amalfunction .
If transmission position Dis selected:
XDrive to aqualified specialist workshop without shifting th etrans -
mission from position D.
If transmission position R,N or Pis selected:
XConsult aqualified specialist workshop .
OnlyShift to 'P'whenVehicl eisSta‐tionar y
The vehicl eisstill moving .
XPull overand stop th evehicle, payin gattention to roa dand traffic
conditions.
XShift th etransmission to position P.
Display messages(vehicles wit hsteering whee lbuttons)21 7
On-board computera nd displays
Z

Engine
Warning/
indicator
lampNSignaltype
Possible causes/consequences and M
Solutions
;NThe yellow CheckE nginew arning lamp lightsupw hile theengine is running.
Therem ay beamalfunction, for example:
Rin th eengine management
Rin th etransmission management
Rin th efuel injection system
Rin th eexhaust system
Rin th eignition system (for vehicle swithagasoline engine)
Rin th efuel system
The emission limit values may be exceeded and th eengine may be runnin gin
emergency mode.
XHav ethe vehicle checked as soon as possible at aqualified specialist workshop.
æNThe yellow reservef uel warning lamp is on while th eengine is running.
The fuel leve lhas dropped to th ereserver ange.
XRefuel at th enearest gas station.
?NThe red coolant warning lamp comes on while th eengine is running.
On vehicle swithout steering wheel buttons, th ecoolant temperatur egage is at the
start of th ebar display (
Ypage 172).
On vehicle swith steering wheel buttons ,the coolant temperatur egage is at the
start of th escale in th einstrumentc luster(
Ypage 37).
The temperatur esensor for th ecoolant temperatur egage is faulty.
The coolant temperatur eisnolonger beingm onitored. Thereisar isk of engine
damag eifthecoolant temperatur eistoohigh.
XStop th evehicle immediately, payinga ttention to road and traffic conditions,
and switch off th eengine .Don otcontinue driving unde rany circumstances.
XSecure th evehicle to prevent it from rolling away (Ypage 132).
XConsult aqualified specialist workshop.
Indicator and warning lamps in th einstrumen tcluster223
On-boardc omputer and displays
Z

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
?NThe red coolant warning lamp comes on while the engine is running.
The coolant leve listoo low.
If the coolant leve liscorrect, the airflow to the engine radiator may be blocked or
the electric engine radiator fan may be malfunctioning.
The coolant is too hot and the engine is no longer being cooleds ufficiently.
XObserve the display messages.
XStop the vehicleimmediately, paying attention to road and traffic conditions,
and switch off the engine.
XSecure the vehicletop revent it from rolling awa y(Ypage132).
XExit the vehiclea nd keepasafe distance from the vehicleu ntil the engine has
cooledd own.
XCheck the coolant leve land add coolant, observing the warning notes
(Ypag e244).
XIf you have to add coolant more frequently, have the engine cooling system
checked.
XMake sure that the air supply to the radiator is not obstructed ,byfrozen slush
for example.
XCheck the coolant temperature:
Rusing the display in the on-board computer on vehicles without steering wheel
buttons (Ypag e172)
Rusing the analog display in the instrument cluster on vehicles with steering
whee lbuttons (Ypag e37)
XDo not start the engine again until the coolant temperature is below the maxi-
mum valu especified below. The engine coul dotherwise be damaged.
XDrive to the neares tqualified specialist workshop.
Avoid heavy loads on the engine, e.g. driving in mountainous terrain, and stop-
and-go traffic.
Under normal operating conditions and with the specified coolant level, the cool-
ant temperature gage may rise to 248 ‡(120 †).
?NThe red coolant warning lamp comes on while the engine is running. An addi-
tional warning tone sounds.
The coolant temperature has exceededt he maximumvaluespecified below. The
airflow to the engine radiator may be blocked or the coolant leve lmay be too low.
GWARNING
The engine is not being cooleda dequately and couldbecome damaged.
Never drive with an overheated engine. Otherwise, fluids which may have leaked
into the engine compartment coul dcatch fire.
In addition, steam from an overheated engine can caus eserious burns, which can
occur just by opening the hood.
There is arisk of injury.
XObserve the display messages.
XStop the vehiclei mmediately, paying attention to road and traffic conditions,
and switch off the engine.
XSecure the vehicletop revent it from rolling awa y(Ypage 132).
224Indicator and warning lamps in the instrument cluster
On-board computer and displays