2016 MERCEDES-BENZ METRIS ECU

Display messagesPossible causes/consequences andMSolutions
Check CoolantLevel
+
The coolan tlevel is to olow.
!Avoid making lon gjou rneys wit htoo littl ecoolan tint heengin e
coolin gsystem. The engin ewill otherwise be damaged.
XAddc oolant, making sur etoobservethe warning note s
(Ypage 244).
XHav ethe engin ecoolings ystem checke dataqualified specialist
workshop if th ecoolan tneeds to be refilled mor eoften than usual.
4
Check Engine OilLevel
An additional warning tone sounds. The engin eoil level has dropped to
th em inimum level.
XChec kthe oil level at th elatest when next refuelin g(Ypage 242).
XIf necessary, add engineoil(Ypage 243).
XHav ethe engin echecked ataq ualified specialist workshop if you
need to add engin eoil mor eoften than usual.
!Avoid lon gjou rneys wit htoo littl eengineo il. The engin ewill oth-
erwise be damaged.
Manually Check OilLevelReminder to chec kthe oil level.
XChec kthe oil level at th elatest when next refuelin g(Ypage 242).
XIf necessary, add engineoil(Ypage 243).
!Avoid lon gjou rneys wit htoo littl eengineo il. The engin ewill oth-
erwise be damaged.
4
Sto pVehicl eTurnEng .Off
The oil level is to olow. There is ariskofe ngined amage.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions, and switch off th eengine.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XChec kthe oil level (Ypage 242).
XIf necessary, add engin eoil(Ypage 243).
æ
Reserv eFuel
The fuel level has dropped to th ereserv erange.
XRefue lattheneares tgas station .
ÏThere is ver ylittl efuel in th efuel tank.
XRefue lattheneares tgas station without fail .
Driving systems
Display messagesPossible causes/consequences and MSolutions
120 km/h!Only for certain countries: themaximum speed has been exceeded .
XDrive moreslowly.
Maximu mSpeed 120km/hOnly for certain countries: th emaximum speed has been exceeded .
XDrive moreslowly.
198Display message s(vehicles withou tsteering wheelbuttons)
On-board computera nd displays

Display messagesPossible causes/consequences andMSolutions
À
Attent.AsstInoper ‐ative
ATTENTION ASSIST has failed.
XVisitaqualified specialist workshop .
À
Attent.Asst: Tak eBreak!
Based on certain criteria, ATTENTION ASSIST has detecte dfatigue or
al ack of concentration on th epart of th edriver .Ana dditional warning
tone sounds.
XIf necessary, tak eabreak.
During lon gjou rneys, tak eregular breaks in goo dtimesot hatyou get
enough rest.
Cruise Contro l---mphAconditi 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).
Tires
Display messagesPossiblec auses/consequence sand MSolutions
Correct Tire Pres‐sureThe tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
XCheck the tire pressure at the next opportunity (Ypag e274).
XIf necessary, correct the tire pressure.
XRestart the tire pressure monitor (Ypag e277).
CheckTirePressureSoonAn additiona lwarning tone sounds.
The tire pressure in one or more tires has dropped significantly.
GWARNING
Tire pressure that are too low pose the following hazards:
RThe tires may burst, especially as the loa dand vehicl espeed
increase.
RThe tires may wea rexcessively and/or unevenly, which may greatly
impair tire traction.
RThe handling as wel lassteering and braking characteristics may be
severely affected.
There is arisk of an accident.
XStop the vehicl ewithout making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions while doing so.
XSecure the vehicl etoprevent it from rolling away (Ypage132).
XCheck the tires and, if necessary, change the whee l(Ypage286).
XCheck the tire pressure (Ypag e274).
XIf necessary, correct the tire pressure.
Display messages (vehiclesw ithout steering wheel buttons)199
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Caution! TireMal‐func.
The tire pressur einoneor mor etires has dropped suddenly.
GWARNIN G
Drivin gwithaf lat tire poses ariskoft hefollowin ghazards :
RAflat tire affects th eabilit ytos teer or brak ethe vehicle.
RYou could then lose control of th evehicle.
RContinue ddrivin 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 swhile doin gso.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XChec kthe tires and ,ifneces sary, chang ethe whee l(Ypage 286).
TirePress.Monito rCurrently Unavail.Due toasource of radi ointerference, no signals can be received from
th ew hee lsensors. The tire pressur emonitor is temporarily malfunc -
tioning .
The tire pressur emonitor restarts automatically as soo nastheprob-
lem has been solved.
Tir ePress.Monito rInoperativeThe tire pressur emonitor is malfunctioning and switched off .Either
th ei nstalled wheels do no thaves uitable tire pressur esensor sorthe
system is malfunctioning ,e.g.b ecause atirep ressur esensor is faulty.
XInstall wheels wit hsuitable tire pressur esensors.
The tire pressur emonitor is activated automatically after drivin gfor
af ew minutes.
or
XVisit aqualified specialist workshop .
Vehicle
Display messagesPossible causes/consequences and MSolutions
ÒThe tailgateisopen.
XClos ethe tailgate.
ÑThe rear door is open .
XClosethe rear door(s).
200Display message s(vehicles withou tsteering wheelbuttons)
On-board computera nd displays

Display messagesPossible causes/consequences andMSolutions
ÓAn additional warning tone sounds. The hoo disopen.
GWARNIN G
The open hoo dmay then bloc kyour vie wwhen th evehicl eisinm otion.
There is ariskofana ccident.
XStop thevehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XClosethe hood.
0An additional warning tone sounds while th evehicl eisinm otion.The
display shows th eopen door(s).
XClos eall doors.
Ð
Pwr .Steering Mal ‐
funct.+
An additional warning tone sounds. The steering powe rassistanc e
could be malfunctioning .You may need to steer mor eforcefully.
XCarefully continu etoaqualified specialist workshop and hav ethe
steering checke dimmediately.
Â
Obtain aNew Key
The ke yneeds to be replaced.
XVisit aqualified specialist workshop .
¥
Add Washer Fluid
The washer fluidlevel in th ewasher flui dreservoir has dropped belo w
th em inimum .
XAddw asher flui d(Ypage 246).
Displaymessages (vehicles withs teering wheel buttons)
Introd uction
Import ant safety notes
GWARNIN G
If th einstrumen tcluste rhas failed or malfunctioned, you may no trecogniz efunction restriction s
in systems relevan ttosafety. The operating safet yofyour vehicl emay be impaired. There is arisk
of an accident.
Drive on carefully. Hav ethe vehicl echecked ataq ualified specialist workshop immediately.
The on-boar dcom puter only shows message sorwarning sfromc ertai nsystems in th einstrumen t
cluste rdisplay. You should therefor emakes urey our vehicl eisoperating safely at all times .Ifthe
operating safet yofyour vehicl eisimpaired, stop th evehicl eass oonasp ossible, payin gattention
to roa dand traffic conditions. The nconsul taqualified specialist workshop .
Display message swithg raphic symbols are simplified in th eOperator' sManual and may differ from
th es ymbols in th edisplay. The display shows high-priorit ydisplay message sinred.Aw arning tone
sounds wit hcertai ndisplay messages.
Pleas erespon dinaccordanc ewitht he display message sand follow th eadditional note sinthis
Operator' sManual.
Display message s(vehicles wit hsteering whee lbuttons)20 1
On-board computera nd displays
Z

Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Disabled SeeOperator' sManual
The front-passenger air bag is deactivated during th ejou rney eve n
though th efront-pa ssenger seat is occupied by an adult or aperson
wit has tatur ec orre spondin gtothato fana dult.
If additional force sare applie dtotheseat or th eoccupant is no tsitting
on th eseat properly (
Ypage 51), theweigh tthe system detects may
be to olow.
GWARNIN G
The front-passenger fron tair bag will no tdeploy in th eevent of an
accident.
There is an increased ris kofinjury.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XSwitc hoff th eignition .
XThe fron tpassenger mus tget out of th evehicle.
XMak esuret hatthe front-passenger seat is unoccupied ,close th e
front-passenger door and switch on th eignition .
XObserv ethe PASSENGER AI RBAG OFFindicator lamp in th ecenter
console and th edisplay message sand chec kthe following:
Seat unoccupied and ignition switched on :
RThe PASSENGER AIRBAG OFFindicator lamp mus tligh tupc ontin-
uously. If th eindicator lamp is on ,the Occupant Classification Sys -
te m( OCS )has disabled th efront-pa ssenger air bag (
Ypage 51).
RThe display mus tnotsho wthe message sFrontPassengerAir ‐bag Enable dSee Operator' sManualorFront PassengerAirbag Disabled See Operator' sManual.
XWait for at least on eminute until th eneces sarysystem checks hav e
been completed.
XEnsur ethatthe display does no tsho we ither of th etwo display
message sabout th efront-pa ssenger fron tair bag.
If these condition sare met ,the front-passenger seat can be occupied
again .
If these condition sare no tmet,t he Occupant Classification Syste m
(OCS )ism alfunctioning .
XVisitaqualified specialist workshop immediately.
Further information on th eOccupant Classification Syste m(OCS )can
be found under "Occupant Classification Syste m(OCS)" (
Ypage 51).
204Display message s(vehicles wit hsteering whee lbuttons)
On-board computera nd displays

Display messagesPossible causes/consequences andMSolutions
FrontPassengerAir‐bag Enable dSeeOperator' sManual
The front-passenger fron tair bag is enabled during th ejou rney eve n
though th efront-pa ssenger seat :
Ris occupied by achild in achild restrain tsystem, or aperson of small
statur e
or
Ris no toccupied.
The system may detec tobjects or force stha tare addin gtotheweigh t
applie dtotheseat .
GWARNIN G
The front-passenger air bag may deploy unintentionally.
There is an increased ris kofinjury.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XSwitc hoff th eignition .
XOpenthe front-passenger door .
XRemove thechild and th echild restrain tsystem from th efront -
passenger seat .
XMakesuret here are no objects applyin gadditional weigh ttothe
seat .
The system may otherwise detec tthe additional weigh tand inter-
pre tthe seat occupant's weigh tasgreatertha nita ctually is.
XMakesuret hatthe front-passenger seat is unoccupied ,close th e
front-passenger door and switch on th eignition .
XObserv ethe PASSENGER AI RBAG OFFindicator lamp in th ecenter
console and th edisplay and chec kthe following:
Seat unoccupied and ignition switched on :
RThe PASSENGER AIRBAG OFFindicator lamp mus tligh tupc ontin-
uously. If th eindicator lamp is on ,the Occupant Classification Sys -
te m( OCS )has disabled th efront-pa ssenger air bag (
Ypage 51).
RThe display mus tnotsho wthe message sFrontPassengerAir ‐bag Enable dSee Operator' sManualorFront PassengerAirbag Disabled See Operator' sManual.
XWait for at least on eminute until th eneces sarysystem checks hav e
been completed.
XEnsur ethatthe display does no tsho we ither of th etwo display
message sabout th efront-pa ssenger fron tair bag.
If these condition sare met ,the front-passenger seat can be occupied
again .Observ ethe note sont heOccupant Classification Syste m
(OCS )(
Ypage 51) .
If these condition sare no tmet,t he Occupant Classification Syste m
(OCS )ism alfunctioning .
XInstall thechild restrain tsystem on asuitable rear seat .
or
XSeat aperson of small statur eonasuitable rear seat .
Display message s(vehicles wit hsteering whee lbuttons)20 5
On-board computera nd displays
Z

Display messagesPossible causes/consequences andMSolutions
XVisitaqualified specialist workshop immediately.
Further information on th eOccupant Classification Syste m(OCS )can
be found under "Occupant Classification Syste m(OCS)" (
Ypage 51) .
#
CheckBrakePadWear
The brak epads/linings hav ereached their wear limit.
XVisit aqualified specialist workshop .
$(USA
only)
J(Canada
only)
Check Brake Fluid
Level
There is insufficien tbrak efluidint hebrak efluid reservoir .
GWARNING
Braking performance can be impaired.
There is ariskofana ccident.
XStop thevehicl eimmediately, payin gattention to roa dand traffic
conditions. Do no tcontinue drivingunder any circumstances.
XSecur ethe vehicl etopreventitfromr ollin gaway (Ypage 132).
XDo no tadd brak efluid .Addingm orew ill no tremedy th emalfunc -
tion .
XConsult aqualified specialist workshop immediately.
Tò
÷
Inoperative SeeOperator' sManual
EBDisu navailable due to amalfunction .ABS ,BAS ,hill start assist and
ES P®as well as it sdrivin gsafet ysystems ,for example, are therefor e
also unavailable .
ATTENTION ASSIST is deactivated and other drivin gsystems could be
automatically deactivated.
GWARNIN G
The brak esystem continues to function normally, but without th e
function slisted above. The wheels could therefor eloc kp rematurel yif
you brak ehard, for example.
This causes steerabilit yand braking to be greatl yimpaired. The brak -
ing distanc ecan increas einemergenc ybraking situations.
If ES P
®is no toperational, ES P®will notstabiliz ethe vehicle.
There is an increased ris kofskiddin gand accidents .
XDrive on withcare.
XVisit aqualified specialist workshop immediately.
206Display message s(vehicles wit hsteering whee lbuttons)
On-board computera nd displays

Engine
Display messagesPossible causes/consequences andMSolutions
#An additional warning tone sounds. The battery is no tbeingc harged.
Possible causes:
Rfault yalternator
Rtorn poly-V-belt
Ram alfunctio nintheelectronics
XStop th evehicle immediately, payinga ttention to road and traffic
conditions, and switch off th eengine.
!Do no tcontinue driving .The engine coul dotherwise overheat.
XSecure th evehicle to prevent it from rolling away (Ypage 132).
XConsult aqualified specialist workshop.
?
CoolantT oo Hot:StopVehicleT urnEngine Off
An additional warning tone sounds. The coolant is to ohot.
GWARNING
Never driv ewith an overheate dengine .Drivin gw hen th eengine is
overheate dcan caus efluids whichm ay have leaked int othe engine
compartmen ttocatch fire.
In addition,s team from an overheate dengine can caus eserious
burns, whichc an occur justbyopening th ehood.
Thereisar isk of injury.
XStop thevehicle immediately, payinga ttention to road and traffic
conditions, and switch off th eengine.
XSecure th evehicle to prevent it from rolling away (Ypage 132).
XWait until th eengine has cooled down.
XMakes ure that th eair supply to th eradiator is no tobstructed, by
frozen slush for example.
XDo no tstart th eengine again until th edisplay message goes out and
th ec oolant temperatur eisbelow th emaximum value specified. The
engine coul dotherwise be damaged.
XMonito rthe ? coolant temperatur egage in th einstrumen tclus-
ter.
XIf th etem peratur eincreases again,v isitaq ualified specialist work-
shop immediately.
Under normal operatin gconditionsa nd with thespecifie dcoolant
level, the ?gage may rise to 24 8‡(120† ).
Displa ymessages (vehicles with steerin gwheel buttons)211
On-boardc omputer and displays
Z