engine MERCEDES-BENZ METRIS 2021 MY21 Operator's Manual

Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
00AC
Coolant Too Hot: Stop
Vehicle Switc hEngine
Off *A
warning tone also sounds. The coolant is tooh ot. &
WARNING Risk of bu rnsw hen opening theh ood
If yo uo pen theh ood when thee ngine has overheated or when
th er eisaf ireint he engine compartment, thef ollowing situa‐
tions ma yoccur:
R Youc oul dc om eintoc ontact wi thhotg ases.
R Youc oul dc om eintoc ontact wi thother hot, escaping oper‐
ating fluids. #
Befor eopening theh ood, allo wthe ove rheated engine to
cool down. #
Inthee vent of afireint he engine compartment, keep the
hood closed and call thef ires ervice. &
WARNING Risk of scalding from ho tcoolant
If yo uo pen thec ap, youc oul dbes calded. #
Letthe mo torc ool down befor eopening thec ap. #
When opening thec ap, wear pr otectiv eglove sa nd saf ety
gl asses. #
Open thec ap slowl ytorelease pressure. #
Stop immediately in accordance wit hthe traf ficc onditions and
switc hoffthee ngine. #
Monitor thec oolant temp eratur edisplay 00AConthei nstrument
clus ter. #
Wait until thee ngine has cooled down. #
Ensur ethat thea ir supply tother adiator is no tobstructed. #
Avoiding high engine loads, driv eontothe neares tqualified spe‐
cialis tworks hop. In doing so, ensur ethat thec oolant temp era‐
tur ed ispla yremain sbelo wt he redm arking.
00AC *T
hefanm otorisd efective.
Ve hicles without steering-wheel buttons: #
Chec kthe coolant temp eratur e(/pag e142).
Ve hicles wit hsteering-wheel buttons: #
Chec kthe coolant temp eratur edisplay 00AConthei nstrument
clus ter.
If th ec oolant temp eratur eisbelowt he maximum value specified
belo w,youc an continue drivin gtothe neares tqualified specialist
wo rkshop.
Av oid high engine loads, e.g. driving on hill yroads or stop-and-go
driving.
During normal driving and if thec oolant le velisc orrect, thec oolant
te mp eratur edispla yisp ermitted torise toletter H. Displa
ymessages and warning and indicator lamps 253

Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
0091
Check Coolant Level *T
he coolant le velist oo lo w.
* NO
TEEngine damag eduetoinsuf ficient coolant #
Avoid long journe yswit hinsuf ficient coolant. #
Addc oolant ,following then otes on coolant (/ page180).
If yo uf requ ently nee dtoadd coolant: #
Have thee ngine cooling sy stem checkedataq ualified specialist
wo rkshop.
00BD
Check Coolant Level See
Oper. Manual *T
he coolant le velist oo lo w.
* NO
TEEngine damag eduetoinsuf ficient coolant #
Avoid long journe yswit hinsuf ficient coolant. #
Addc oolant ,following then otes on coolant (/ page180).
If yo uf requ ently nee dtoadd coolant: #
Have thee ngine cooling sy stem checkedataq ualified specialist
wo rkshop.
00B2
Check Engine Oil Level
or Check Engine Oil At
Next Refueling *A
warning tone also sounds. The oi llev el in your vehicle has fallen to
th em inimum.
* NO
TEEngine damag ecaused bydriving wit hinsuf ficient
engine oil #
Avoid long journe yswit hinsuf ficient engine oil. #
Che cktheo il le velw hen next refueling, at thel atest
(/ page179). #
If necessa ry,a dd engin eoil (/ page179).
If engine oil frequently needs tobe topped up: #
Have thee ngine checkedataq ualified specialis tworks hop.
ManuallyC heck Oil Level *R
eminder tocheckt he oil le vel.
* NO
TEEngine damag ecaused bydriving wit hinsuf ficient
engine oil #
Avoid long journe yswit hinsuf ficient engine oil. #
Che cktheo il le velw hen next refueling, at thel atest
(/ page179). #
If necessa ry,a dd engin eoil (/ page179). #
Toconfir mthe oil le velc heck: press and hol dthe 0078 button.
00B2 Manually Check Oil Level *R
eminder tocheckt he oil le vel. 254
Displa ymessages and warning and indicator lamps

Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
* NO
TEEngine damag ecaused bydriving wit hinsuf ficient
engine oil #
Avoid long journe yswit hinsuf ficient engine oil. #
Che cktheo il le velw hen next refueling, at thel atest
(/ page179). #
If necessa ry,a dd engin eoil (/ page179). #
Toconfir mthe oil le vel:press the0076 button.
00B2 StopV ehicle Turn Eng.
Off *T
he oil le velist oo lo w.Ther eisar isk of engin edamage. #
Stop immediately in accordance wit hthe traf ficc onditions and
switc hoffthee ngine. #
Secur ethe vehicle agains trolling away. #
Chec kthe oil le vel(/pag e179). #
If necessa ry,a dd engin eoil (/ page179).
00B2 Eng. Oil Level Low: Stop
Vehicl eSwitch Engine
Off *T
he oil le velist oo lo w.Ther eisar isk of engin edamage. #
Stop immediately in accordance wit hthe traf ficc onditions and
switc hoffthee ngine. #
Secur ethe vehicle agains trolling away. #
Chec kthe oil le vel(/pag e179). #
If necessa ry,a dd engin eoil (/ page179).
00D4 Fue lLevel Low *T
he fuel supply has dropped int othe reser verange. #
Refuel thev ehicle.
Ï *T
hereisv eryl ittle fuel in thef uel tank. #
It is absolutely essential torefuel at then eares tgas station. Ti
res Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
Please Correct Tire Pres-
sure *T
he tir epressur eist oo lo winatl eastone of thet ires, or thed iffe r‐
ence in tir epressu rebetween thei ndividual wheels is toog reat. #
Chec kthe tir epressur eatt he next opportunity . #
Correct thet irep ressur easn ecessar y. #
Restar tt he tir epressur emonitoring sy stem (/ page209).
Check Tires *A
warning tone also sounds.
The tire pressur einone or mor etires ha sdropped significantl y. Displ
aymessa gesa nd warning and indicator lamps 255

Displa
ymessages
Possible causes/consequences and 0050 0050Solutions &
WARNING Risk of accident du etodriving wit hthe hood
unloc ked
The hood ma yopen and bloc kyour vie w. #
Neverrelease theh ood when driving. #
Befor eevery trip, ensur ethat theh ood is loc ked. #
Stop thev ehicle immediately in accordance wit hthe traf ficc on‐
ditions. #
Secu rethev ehicle agains trolling away. #
Close theh ood.
003D
or
0051 *I
na ddit ion, awarning tone sounds du ring thet rip.
The displa yshows theo pen door or doors. #
Close all thed oors.
00B2
Check Washer Fluid *T
hewasher fluid le velint hewasher fluid reser voir has dropped
belo wthe minimum. #
Addw ashe rfluid (/ page181).
00CC
0091
Pwr .Steerin gMalfunct. *A
warning tone also sounds. The steering po werassi stanc ecould be
malfunctioning. Youm aynee dtos teer mor eforcefully. #
Carefully continue toaq ualified specialis tworks hop and ha ve
th es teering checkedi mmediatel y.
00CC Power Steering Malfunc-
tion See Oper. Manual *A
warning tone also sounds. The po werassi stanc efor thes teering
could be malfunctioning. Youm aynee dtos teer mor eforcefully. #
Carefully continue toaq ualified specialis tworks hop and ha ve
th es teering checkedi mmediatel y.
Phone No Service *Y
our vehicle is outside thet ransmission and receiver rang eoft he
mobile phone networ kprovide r.
Shif tto' P' or 'N' to Start
Engine *
Yo uh ave attem pted tostar tt he engine in transmission position 005E
or 005B. #
Shif tthe transmission toposition 005Dor005C.
Auxiliary Battery Mal-
function *T
he auxiliary batteryfor thet ransmission is no longer being
ch arge d. #
Consult aqualified specialis tworks hop. 258
Displa ymessages and warning and indicator lamps

Lights
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
0049
Check Left Low
Beam (exa mp le) *T
he cor responding light source is defective.
Ha ve defectiv eLED lights replaced at aqualified specialis twork‐
shop. #
Obser vethen otes on changing abulb (/ page80). #
Replace thef aulty bulb at thef ront (/ page81)or rear
(/ page83).
0049
Aut oLamp sIno perative *T
he light sensor is faulty .The automatic drivin glight saremalfunc‐
tioning. #
Swit chthel ight functions on/o ffmanually (/ page77). #
Consul taqualified specialis tworks hop.
0049
Auto Lamp Function
Inoperative *T
he light sensor is faulty .The automatic drivin glight saremalfunc‐
tioning. #
Swit chthel ight functions on/o ffmanually (/ page77). #
Consul taqualified specialis tworks hop.
0049
Malfunction See Opera-
tor’s Manual *T
heexterior lighting is malfunctioning. #
Consult aqualified specialis tworks hop.
*V ehicles wit htrailer hitch: afuse ma ybefaulty.
* NO
TEElectrica lfuses #
Obser vethei nformation in thes upplement. Youm ayoth‐
erwise failto recognize dangers. #
Che ckthef uses and replace an yblown fuses (see "Fuse assign‐
ment "supplement).
If th ed ispla ycontinues tosho wthe message: #
Consult aqualified specialis tworks hop. Indicator and
warning lamps Indicator and
warning lamps on thei nstru‐
ment clus ter Some sy
stems will per form aself-tes twhen the
ignition is switched on. Som eindicator and warn‐
ing lamps ma ybriefly light up or flash. This
behavior is non-c ritical. These indica tora nd warn‐
ing lamps indicat eamalfunction onl yiftheylight
up or flash af tert he engine has been star tedor
during ajourne y. 260
Displa ymessages and warning and indicator lamps

Saf
etys ystems Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions
0075
Re stra int sy stem warning
lamp *The
redw arning lam pfor ther estraint sy stem is on while thee ngine
is running.
The restra int sy stem is malfunctioning. &
WARNING Risk of inju rydue tomalfunctions in ther estraint
sy stem
Components in ther estraint sy stem ma ybeactivated unintention‐
ally or no tdeplo yasp lanned in an accident. #
Have ther estraint sy stem checkeda nd repaired immediately
at aq ualified specialis tworks hop. #
Paya ttention tothed ispla ymessages. #
Driv eonc arefull y. #
Have ther estraint sy stem and its components checkedbyaq uali‐
fi ed specialis tworks hop immediately.
Fu rther information on ther estraint sy stem and its components can
be found unde r"Occupan tsafet y".
0027 Brak esystemw arning
lamp
004D Brak esystemw arning
lamp
00DF AB Sw arning lamp *
0027 (USAonly) or 004D(Canada only): The AB Sand brak ewarning
lamps ar eonwhilethee ngine is running.
EBD is no tavailable due toam alfunction. As aresult, BAS, hil lstart
assi stand ESP ®
as well as their driving saf etys ystems ar enotavaila‐
ble.
AT TENTION ASSIS Thas been deactivated and additional driving sys‐
te ms ma yhave been switched of fautomaticall y. &
WARNING Risk of skidding if EBD, ABS and ESP ®
arem al‐
functioning
The wheels ma yblock during braking and ESP ®
does no tperform
an yv ehicle stabilization.
The steerability and braking characteristic sareheavil yimp aired
and theb raking dis tance ma yincrease .Inaddition, other driving
saf etys ystems ar eswitched off. #
Driv eonc arefull y. #
Have theb rake system checkedi mmediately at aqualified
specialis tworks hop. #
Switc hoffthee ngine, waitaw hile and restar tt he engine. #
Chec kwhether thed ispla ymessag ehas disappeared and ESP ®
is
operational.
If th ed ispla ymessag econtinues tobe displa yed: #
Driv eonc arefull y. #
Consult aqualified specialis tworks hop immediatel y. Displ
aymessa gesa nd warning and indicator lamps 261

Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions
0027
Brak esystemw arning
lamp
004D
Brak esystemw arning
lamp *
0027 (USAonly) or 004D(Canada only): The redb rake warning lamp
is on while thee ngine is running.
The reis insuf ficient brak efluid in theb rake fluid reser voir. &
WARNING Risk of an accident du etolowbrak efluid le vel
If th eb rake fluid le velist oo lo w,theb raking ef fect and theb rak‐
ing characteristic smaybe impaired. #
Pull overand stop thev ehicle safely as soon as possible,
paying attention toroad and traf ficc onditions. Do no tcon‐
tinue driving under an ycircums tances. #
Consult aqualified specialis tworks hop. #
Do no tadd brak efluid. #
Secur ethe vehicle agains trolling away.
00DF
ABS warning lamp *T
he yello wA BSwarning lam pisonw hilethee ngine is running.
ABS ha sbeens witched of fdue toam alfunction. As aresult, BAS, hill
st ar ta ssis tand ESP ®
as well as their driving saf etys ystems ha vealso
been swit ched off.
AT TENTION ASSIS Thas been deactivated and additional driving sys‐
te ms ma yhave been switched of fautomaticall y. &
WARNING Risk of skidding if ABS and ESP ®
are malfunction‐
ing
The wheels ma yblock during braking and ESP ®
does no tperform
an yv ehicle stabilization.
The steerability and braking characteristic sareheavil yimp aired
and theb raking dis tance ma yincrease. In addition, other driving
saf etys ystems ar eswitched off. #
Driv eonc arefull y. #
Have ABS and ESP ®
ch eckedi mmediately at aqualified spe‐
cialis tworks hop. #
Switc hoffthee ngine, waitaw hile and restar tt he engine. #
Chec kwhether thed ispla ymessag ehas disappeared and ESP ®
is
operational.
If th ed ispla ymessag econtinues tobe displa yed: #
Driv eonc arefull y. #
Consult aqualified specialis tworks hop immediatel y.
If th eA BS cont rolu nit is defective, other sy stems ma ybeavailable
onl yw ithr estrictions or ma ybeunavailable.
00E5
ESP ®
wa rning lamp *
The yello wE SP®
wa rning lam pflashes while thev ehicle is in motion.
ESP ®
or traction cont rolinter venes because ther eisar isk of skidding
or at leas tone wheel is spinning.
Cruise contro lhas been automaticall yswitched off. 262
Displa ymessages and warning and indicator lamps

Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions #
When pulling away,a ccelerat eonlyasm uchasisn ecessary. #
Dep ress thea ccelerator pedal less during your journe y. #
Adapty our driving styletos uitther oad and weather conditions. #
Do no tswit ch offE SP ®
.
In exc eptional cases, it ma ybebette rtos witchoff
ESP ®
(/ page111).
00E5 ESP ®
wa rning lamp *
The yello wE SP®
wa rning lam pisonw hilethee ngine is running.
ESP ®
,B AS, hil lstart assist, ESP ®
trailer stabilizatio nand Crosswind
Assis tare nota vailable due toam alfunction.
AT TENTION ASSIS Tisdeactivated and other driving sy stems could be
automaticall ydeactivated. &
WARNING Risk of skidding if ESP ®
is malfunctioning
If ESP ®
is malfunctioning ,ESP ®
canno tcarry out vehicle stabiliza‐
tion. In addition ,other driving saf etys ystems ar eswitched off. #
Driv eonc arefull y. #
Have ESP ®
ch eckedataq ualified specialis tworks hop. #
Switc hthe engine off, wait brief lyand star tt he engine again. #
Chec kwhether thed ispla ymessag ehas disappeared and ESP ®
is
operational.
If th ed ispla ymessag econtinues tobe shown: #
Driv eonc arefull y. #
Consult aqualified specialis tworks hop immediatel y.
00BB ESP ®
OFF warning lamp *
The yello wE SP®
OFF warning lam pisonw hilethee ngine is running.
ESP ®
ha sb eens witched off. ESP ®
traile rstabilizatio nand Crosswind
Assis thave been deactivated. &
WARNING Risk of skidding whe ndriving wi thESP ®
deacti va‐
ted
ESP ®
does no tactto stabiliz ethe vehicle. The availabilit yoffur‐
th er driving saf etys yst ems is also limited. #
Driv eonc arefull y. #
Deactivat eESP®
only forasl ong as thes ituation requires.
If ESP ®
canno tbeactivated, ESP ®
is malfunctioning. #
Have ESP ®
ch eckedi mmediately at aqualified specialist
wo rkshop. #
Switc hESP®
on again.
In exceptiona lcases, it ma ybebette rtos witchoff
ESP ®
(/ page111). Displa
ymessages and warning and indicator lamps 263

Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions #
Adapty our driving styletos uitther oad and weather conditions.
If ESP ®
canno tbeswitched on: #
Driv eonc arefull y. #
Have ESP ®
ch eckedataq ualified specialis tworks hop. Seat belt
Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions
00E9
Seat belt warning lamp *The
reds eat belt warning lam plight suporf lashes af tert he engine
has star ted. Aw arning tone ma yalsos ound.
Fo rc ertain countries only: The reds eat belt warning lam plight sup
fo ram aximu mofs ix seconds af tert he ignition has been switched on.
The seat belt warning lam premind sthe driver and co-driver tofast en
th eir seat belts. #
Fasten your seat belt (/ page27).
00E9
Sea tbelt warning lamp *The
redw arning lam pfor thes eat belt lights up af tert he engine
st arts as soon as thed rive r's or co-driver's door has been closed.
The driver's or front passenger's seat belt is no tfas tened. #
Fasten your seat belt (/ page27).
The warning lam pwill go out.
In vehicles wit hthe occupant classification sy stem (OCS), ther ea re
object sonthe co-driver's seat. #
Take theo bject soffthec o-driver's seat and stowthem in awell-
secured place.
The warning lam pwill go out.
00E9 Seat belt warning lamp *The
reds eat belt warning lam pflashes and an intermit tent wa rning
to ne sounds.
The driver' sorfront passenger' sseatb eltisn otfast ened. Youa re
drivin gatas peedgreater than 15 mp h(25 km/h) or ha vebrief ly
ex ceeded 15mp h(25 km/h). #
Fasten your seat belt (/ page27).
The warning lam pand thei ntermittent warning tone will go out.
In vehicles wit hautomatic co-driver airbag shutoff, ther ea reobjects
on thec o-driver's seat. Youa redrivin gatas peedgreater than
15 mp h(25 km/h) or ha vebriefly exceeded 15mp h(25 km/h). #
Take theo bject soffthef ront passenger seat and stowthem in a
we ll-secured place.
The warning lam pand thei ntermittent warning tone will go out. 264
Displa ymessa gesa nd warning and indicator lamps

Drivin
gsystems Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions
00BA
Wa rning lam pfor dis‐
ta nce warning function *The
redd ista nce warning lam plight supw hilethev ehicle is in motion.
The dis tance tothev ehicle in front is toos mall fort he selected
speed. #
Increase thed ista nce tothev ehicle in front.
00BA Wa rning lam pfor dis‐
ta nce warning function *The
redd ista nce warning lam plight supw hilethev ehicle is in motion.
Aw arning tone also sounds.
Yo ua reapproachin gavehicle or astationar yobstacle on your antici‐
pated routeate xcessiv espeed. #
Beready toappl ythe brakes immediatel y. #
Payc areful attention tothet raffic situation. If necessar y,apply
th eb rake sora void an obs tacle.
Yo uc an find fur ther information about thed ista nce warning function
in "Activ eBrake Assist" (/ page113). Ve
hicle Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions
00CC
Po we rsteering sy stem
wa rning lamp *The
redp owersteering sy stem warning lam pisonw hilethee ngine is
ru nning .Awarning tone also sounds.
The po werassi stanc efor thes teering ma ybemalfunctioning. Yo u
ma yneed touse mor eforce tosteer. #
Carefully driv eontoaqualified specialis tworks hop and ha vethe
st eering checkedi mmediatel y.
003E
Door indica torlamp *T
he yello w" door open" indicator lam pislit.
Ad oor is no tfull yc losed. #
Close all thed oors. Engine
Wa
rning/indicator
lamp Po
ssible causes/consequences and 0050 0050Solutions
00B9
Chec kEngine warning
lamp *The
yello wC heckEngine warning lam pisonw hilethee ngine is run‐
ning.
The rema ybeam alfunction in thef ollowing vehicle sy stems:
R Engine management
R Transmission management
R Injection
R Exhaus tsystem Displa
ymessages and warning and indicator lamps 265