2021 MERCEDES-BENZ METRIS warning light

#
Attach thec able tothet railer wit hcable ties
(onl yint he case of adap terc able). #
Mak esuret hat thec able is alw ayss lac kfor
ease of mo vement during cornering. #
Establish all electrical and other connections
to thet railer .Inthe process, attac hthe trail‐
er's break away cable tothee yeletont he ball
nec k. #
Chec kthat thet railer's lighting sy stem works
properly. #
Indicat einbothd irections and checkw hether
th ec orresponding tur nsignal light on the
traile risflashing.
At railer is de tected only if thee lectrical con‐
nection is es tablished cor rectl ya nd thel ight‐
ing sy stem is in working order .The function
of other sy stems also depends on this, e.g.
ESP ®
,P ARKTRONIC, ActiveP arking Assist,
Blin dSpotA ssis torL aneKeeping Assist.
Even if thet railer is connected cor rectly ,am es‐
sag em aynevertheless appear on them ultifunc‐
tion displa yinthefollowing cases:
R LED shave been ins talled in thet railer's light‐
ing sy stem.
R The cur rent ha sfallen belo wthe trailer light‐
ing sy stem's minimum cur rent (50 mA)
% Yo
uc an connec taccesso ries up toam axi‐
mum of 240Wtot he permanent po wersup‐
ply. #
Remo veobject sordevices that pr event the
traile rfromr olling, e.g. choc ks. #
Release thet railer's parking brake.
Obser vethem aximum permissible trailer dimen‐
sions (widt hand length).
Mos tstatesa nd all Canadian pr ovinces pre‐
scribe:
R Safetyc hains between thet ow ing vehicle and
th et railer .The chains shoul dberouted in a
criss-cross patter nunde rthe dr awbar .They
mus tbec onnected tothet railer hitc hand not
to theb umper or tothev ehicle's axle.
Lea vesuf ficient sla ckinthec hains. This also
allo wsfors har pcornering.
R Asepa rate brak esystemf or speci fict railers.
R Safetys hutof ffor braked trailers. De term ine
th es pecific requirements acco rding tothe
re leva nt la ws. If
th et railer becomes de tach ed from thet ow‐
ing vehicle, thes afet ys hutof fwill activat ethe
trailer brakes.
Un coupling atrailer &
WARNING Risk of being crushed and
becoming trapped whe nuncoupling a
trailer
Whe nuncoupling atrailer wi than engaged
ine rtia-activated brake, your han dmay
become trapped between thev ehicle and the
traile rdrawbar. #
Do no tuncouple trailer swithan
engaged overrun brake. *
NO
TEDama gewhen uncouplin gina
st at eofo verrun Uncou
pling in astate ofoverru nc an damage
th ev ehicle. #
Do no tuncouple trailer swithan
engaged overrun brake. #
Shif tthe transmission toposition 005D. #
Appl ythe vehicle's parking brake. #
Close all thed oors. #
Appl ythe trailer's parking brake. #
Further secur ethe trailer agains trolling away
wit haw heelchoc kors imilar object. #
Remo vethet railer cables and saf etyc hains. #
Uncouple thet railer. Information about
towing atrailer Operatin
gatrailer is subject toman ystatutory
re gulations suc hasspeedrestrictions.
Man ystatesa lso requ ireana uxiliaryseparate
functional brakin gsystem when towing aweight
th at exc eeds acertain limit .For your saf ety, it is
re commended touse aseparat efunctional brak‐
ing sy stem on an ytowe dvehicle.
Mak esuret hat your trailer combinatio nmeets
local regulations. This no tonlya pplies to your
plac eofr esidence, but also to your destination.
In fo rm atio nont his can be obtained from the
police and local authorities.
Compl ywitht he following when driving wit ha
trailer:
R Practice cornering, stopping and backing up
in at raffic-free location. In this wa y,yo uw ill Drivin
gand parking 13 3

ga
in driving experience and become accus‐
to med tothen ew handling characteristics.
R Befor edriving, checkt he following:
- that thet railer towh itch and ball coupling
ar es ecure
- that thes afet ys wit ch forb rake dt railer sis
functioning cor rectly
- that thes afet yc hains ar esecur eand
undamaged
- that thee lectrical connection saresecure
- that thel ights ar efunctioning cor rectly
- thew heels ford ama geand cor rect tire
pressur e(/ page 204)
R Adjus tthe outside mir rors so that youh ave a
clea rviewoft herear sectio nofthe trailer.
R Ifth et railer is equipped wit hanindividual
braking sy stem, checkb efor eeachj ourney
whe ther theb rake sa refunctioning cor rectl y.
R Ifth et railer has electronicall ycont rolled
brakes, pull away carefully wi th thevehicle/
trailer combination .Brake manually using the
brak econtroller and checkw hether the
brakes ar efunctioning cor rectl y.
R Secu rethel oad on thet railer in line wit hthe
re qu irements and rules forl oad-securing
me thods.
R When driving wit hatrailer ,chec katr egular
inter vals that thel oad is secur eand that the
light sand brakes ar efunctioning cor rectl y.
R Bea rinm indthat theh andling characteristics
ar em oreu nstable when towing atrailer than
when drivin gwithout atrailer .Avoid sudden
st eering mo vements.
R The vehicle/trailer combination is heavier,
accelerates mor eslowl y,has areduced
climbing ability and an increased braking dis‐
ta nce. It is mor esusceptible toside winds
and requ ires careful steering.
R If possible, do no tbrake suddenl y,but rath er
moderatel yatfirst so that thet railer can acti‐
va te its brakes. Then inc rease thep ressur eon
th eb rake pedal.
R Ifth ea utomatic transmission shifts between
ge arsonu phill or downhill gradients, restrict
th es hiftrange. Select shif trang e4,3,2or1.
Al owe rgear and reduced speed decrease the
ri sk of engine damage.
R When driving on adownhill gradient, shif ttoa
lo we rgear touse thee ngine' sbraking ef fect. Av
oid cons tant braking, as this could cause
th ev ehicle brakes and possibly also the
traile rbrake stoo verheat.
R Ifth ec oolant temp eratur eincreases signifi‐
cant lywhen thea ir-conditionin gsystemis
switched on, switc hthe air-conditioning sys‐
te mo ff.
Coolant heat can also be dissipated by
switching thea irflow and thet emperatur eof
th eh eater or air conditioning tothem aximum
le ve l. Open thew indo wsif necessar y.
R When overtak ing, pa yparticular attention to
th ei ncreased overtakin gdista nce of your
ve hicle/trailer combination.
Due tothel engt hofy ourvehicle/trailer com‐
bination youw illrequ ireal onger stre tchof
ro ad befor eswit ching bac ktothe original
lane. Pe
rm issible trailer loads and tongue weights We
ight information &
WARNING Risk of accident du etoan
unbraked trailer wit hanexcessiv egross
we ight
If yo up ull an unbraked trailer wit hagross
tr ailer weight (G TW)ofm oret han 1,653 lbs
(750 kg),th ev ehicle's brak esystem may
ove rheat.
This increases theb raking dis tance and may
eve ncause theb rake system tofail. #
Alwaysu seatrailer wit haseparate
braking sy stem if youa repullin gagross
trailer weight (G TW)ofm oret han
1, 653 lbs (750 kg). *
NO
TEDama getothed rive train, trans‐
mission or trailer towh itch due toexc ess
gross combination weight The permissible
grosscombination weight is
exc eeded.
The driv etrain, thet ransmission or thet railer
to wh itch ma ybed amaged. #
Compl ywitht he permissible gross com‐
bination weight. Fo
rv ehicles wit hapermissible gross weight of
6,6 14 lbs (3,00 0kg),thep ermissible gross com‐
bination weight is less than thes um of thep er‐
missible gross vehicle weight and thep ermissible 134
Driving and pa rking

Note
sont he instrument clu ster an don-
board co mputer &
WARNING Risk of accident du etoan
instrumen tclus term alfunction
If th ei nstrument clus terh as failed or mal‐
functioned, youm aynotn oticer estrictions to
saf ety-re leva nt sy stem functions.
The operating saf etyofy ourvehicle ma ybe
impaired. #
Driv eonc arefull y. #
Have thev ehicle checkedi mmediately
at aq ualified specialis tworks hop. If
yo ua reuncer tain rega rding theo perational
saf etyofy ourvehicle, par kthe vehicle safel yas
soon as possible. Infor maqualified specialist
wo rkshop.
The on-boar dcomputer will sho wonly messages
and warnings from cer tain sy stems on thed is‐
pla y.Yo us houl dtherefor emakes urey our vehicle
is operating safely at all times.
Yo uc an find an overvie woft he indicator and
wa rning lamps on thei nstrument clus terin" At a
gl ance". Overvie
wofthe instrument clu ster Instrument clu
ster (vehicles without steering
wheel buttons)
1 Speedome ter
2 Multifunction display
3 Tach ome ter
4 Setthe instrument lighting, chang evalues or
settings ,scroll thro ugh lists
5 Select sasubmenu or resets values
6 Selects them enu or display Instrument clus
ter( ve hicles wit hsteering wheel
buttons)
1 Speedome ter
2 Multifunction display
3 Tach ome ter
4 Coolan ttemperatur edisplay
5 Fuel le vel
Fu elfiller flap location 007F:the fuel filler
cap is on thel eft
6 Adjusts thei nstrument lighting
Speedome ter
Ve hicles wit hsteering wheel buttons:
In vehicles wit hActiv eDista nce Assi st
DISTRONIC, ther ea reilluminated segment son
th es peedome terd ial.
These segments sho wyou what speed rang eis
av ailable:
R Variable limiter activated (/ page115 )
The segments light up from thes tart of the
scale tothes elected limit speed.
R ActiveD ista nce Assi stDISTRONI Cswitched
on (/ page 116)
On eort wosegments light up in thes aved
speed range.
R ActiveD ista nce Assi stDISTRONI Cdetects a
ve hicle in front.
The segments light up from thes peed of the
ve hicle in front up tothes ave dspeed.
Yo uc an sho wthe speed as adigital speedome ter
on thed ispla yasw ell.
If yo uc hang eyour vehicle's wheel size, checki ts
assignmen ttothe wheel size group
(/ page218). If thea ssignmen tchanges with‐
out recoding thec ont rolu nit sint hevehicle, the
speedome terw illn ot displa ythe speed accu‐
ra tely.T he cur rent vehicle speed ma ythen be
higher than thes peed shown bythes peedome‐
te r.Driving and driving sa fety sy stems ma ythen
be operationall yimp aired or ma ydetect amal‐
function and switc hthemselves off. 13 6
Instrument clus tera nd on-boar dcomputer

1
Èand 0078buttons
2 Multifunction display
3 0074and 0075buttons
If yo ut urnt he keytop osition 0047inthei gnition
loc k,theo n-boar dcomputer will be activated.
If yo ur emo vethek ey,then quickl yre-inser tit
and tur nittop osition0047,the on-boar dcomputer
and instrument clus terw illn ot be activated.
Yo uc an control thed ispla ymessages and set‐
tings in theo n-boar dcomputer wit hbuttons 1
and 3onthei nstrument clus ter.
Button sonthe instrumen tclust er
È Press brief
ly:
R Selects them enu or display
R Inthe Settings menu:exits the
submenu without adopting thel ast
setting and returns tothem ain
menu
È Press and hold:
R Returns tothes tanda rddispla yor
th eD ista nce menu wi thout adopt‐
ing thel asts etting
0078 Press briefl
y:
R Selects asubmenu or function
R Confirms thes elected entry onthe
lis tort he displa y,or confirms the
setting 0078
Press and hold:
R Resets thet ripd ista nce and trip
computer values
R Inthem ain menu of theSettings
menu, resets tofactor ysettings
R Inthe Settings menu,resets values
and returns tothem ain menu
00740075 R
Sets thei nstrument lighting (no tin
the Settings menu)
R Scroll thro ugh lists
R Chan gevalues or settings Overvie
wand operation of theo n-boa rd
compu ter( ve hicles with steering-wheel but‐
to ns) &
WARNING Risk of distraction from infor‐
mation sy stems and communications
equipment
If yo uo perat einformation and communica‐
tio ne quipment integ ratedint hevehicle when
driving, youw ill be distracted from thet raffic
situation. This could also cause youtol ose
control of thev ehicle. #
Onlyoperat ethis equipment when the
traf fics ituation permits. #
Ifyo uc anno tbes ureoft his,stop the
ve hicle whils tpaying attention toroad
and traf ficc onditions and ope rate the
equipment wit hthe vehicle stationar y. Yo
um usto bse rvet he legal requirements fort he
countr yinwhich youa recur rentl yd riving when
ope rating theo n-boar dcomputer. 13 8
Instrument clus tera nd on-boar dcomputer

00C5
Re
ar wind owwiper (/ page86) Setting
thei nstrument lighting &
WARNING Risk of accident and inju ry
during inter vention bythes teering wheel
If yo ur eac hthrough thes teering wheel to
operat ethe adjustment knobs while driving,
yo uc oul dlose control of thev ehicle. #
Use thea djustmen tknobs onl ywhen
th ev ehicle is at astandstill. #
Do no treac hthrough thes teering wheel
while driving. Brightness cont
rol(ex ample: vehicle wit hsteer‐
ing-wheel buttons)
The displa yson thei nstrument clus tera re illumi‐
nated during thed ay.Ad imming functio nisnot
possible in da ylight.
In vehicles wit hsteering-wheel buttons, thel ight
sensor on thei nstrument clus tera utomatically
controls theb rightness of thed ispla ylighting.
When thel ight has been switched on, theb right‐
ness cont rolisi nfluenced bythea mbient light.
Yo uc an then adjus tthe brightness of thei nstru‐
ment lighting and thed ispla ylighting as well.
Ve hicles without steering-wheel but tons: #
Press the0074or0075 button on thei nstrument
clus ter.
% Ifthe Settings menu has been selected on
th eo n-boar dcomputer ,itwill notbep ossible
to adjus tthe displa ybrightness.
Ve hicles with steering-wheel but tons: #
Turn brightness control 1onthei nstrument
clus ter. Overvie
wofmenus on theo n-boa rdcom‐
pu ter
Ve hicles without steering wheel but tons
Press theÈbutton on thei nstrument clus terto
scroll thro ugh them enus.
Yo uw ill see theSettings menu onl yifthevehicle
is stationar y.
If yo us crol lfor wa rdsint heSettings menu using
the 0078button, thes ettings fort he pr evious sub‐
men uort he previous function will be copied over.
If yo up ress the Èbutton in asubmenu, thes ub‐
menu or function will be exited without thes et‐
ting being adop ted.
Yo uc an find fur ther operating information in
"Overvie wand operation of theo n-boar dcom‐
puter" (/ page137).
Depending on thev ehicle equipment, youc an call
up thef ollowing menus, displa ysor functions:
R Displa yshowing trip dis tance and total dis‐
ta nce (/ page 142)
R Trip computer displa y(/ pag e142)
R Displ ayshowing cur rent range
R Displa yshowing cur rent fue lconsu mption
(/ page 142)
R Digital speedome ter
R Displ ayshowing coolant temp erature
(/ page142)
R Displ ayshowing displa ymessages in them es‐
sag em emor y(/pag e235)
The following menus, displa ysand function swill
also be displa yedw hen thev ehicle is stationary:
R Displa yshowing next servic edue date
(/ page175)
R Electroni cchec kont he engine oil le vel
( / pag e178)
R Tire pressur emonitoring sy stem restart
(/ page209)
R The Settings menufor adjusting or activating
and deactivating driving and driver assis tance
sy stems as well as displa yoptions
(/ page143)
Ve hicles with steering wheel but tons
Use the0059 or0065 steering-wheel button to
sho wthe menu bar and scroll thro ugh them enus.
Use the0064 or0063 steering-wheel button to
scroll thro ugh their submenus and functions. Instrument clus
tera nd on-boar dcomputer 141

Installing
#
Turn me tal retainin gring 3sothat it is paral‐
lel tothel ong axis of tie-down eye2as illus‐
tra ted.
The locking pin can onl ybepushed down suf‐
fi ciently and allo wthe tie-down eyetobe
ins talled, mo vedorr emoved, if them etal
re tainin gring is parallel tothel ong axis of the
tie-down eye. #
Hold tie-down eye2between your fore finger
and middl efinger as illustrated, and place
yo ur thumb thro ugh me talr etainin gring 3
an dont he centra lpressur epoint. #
Use your thumb topush thel ocking pin down
as farasitw illg o. #
Push tie-down eye2near thel oad using the
notches on guid erail 1,a nd mo veit appr ox‐
imatel y0.5 in (1 2mm). #
Remo veyour thumb from thep ressur epoint
and slide tie-down eye2until it engages. #
Turn me tal retainin gring 3sothat it is per‐
pendicular tothel ong axis of tie-down eye
2 .
The locking pin cannot be pushed downfarif
th em etal retainin gring is perpendicula rto
th el ong axis of thet ie-down eye. This pre‐
ve nts thet ie-down eyef romb eing released
unin tentionally ,e.g. if thet ie-down eyeis
st epped on. #
Chec kthat tie-down eye2is seated cor‐
re ctly.
The tie-d owne yecann otbe mo ved.
Re moving #
Turn me tal retainin gring 3sothat it is paral‐
lel tothel ong axis of tie-down eye2. #
Grip tie-down eye2as described abo ve
unde rins talling and use your thumb topush
th el ocking pin down as farasitw illg o. #
Slide tie-down eye2and pull it up and out
th ro ugh then otch of guide rail1. Load securing aid
Re
moving/installin galoadp rote ction net &
WARNING Risk of inju ryor deat hdueto
object sbeing poorly secured
The load pr otection ne talone cann otrestra in
or secur eheavy objects, luggag eorheavy
loads. Yo
uc oul dbeh itby an unsecured load during
sudden changes in direction ,brakin gorint he
eve nt of an accident. #
Alwayss towo bjectsins uchaw aythat
th ey canno tbethrow na bout thev ehi‐
cle. #
Secur eobjects, luggag eorloads against
slipping or tipping over,e.g. byusin gtie
downs ,evenw heny ou ar eusingthe
load pr otection net. &
WARNING Risk of inju rydue tositting
behind apartitioning net
Ve hicle occupants can be pressed agains tthe
partitioning net. Ther eisarisk of injur y. #
Nevera llow vehicle occupants tosit
behind thep artitioning net. The load pr
otection ne tpartition sthe cargo com‐
partment. It pr otects vehicle occupants from light
objects and/or luggag eslipping or tipping over.
Yo uc an ins tallth el oad pr otection ne tatanangle
behind thef ront seats or behind thef irst ro wof
re ar seats. #
Obse rvet he no tesons ecuring loads
(/ page168). Up
per retainer 17 2
Transporting

#
Allow thee ngine tocool down and only
to uc hc omponent parts desc ribed in the
fo llowing. *
NO
TEDama getohood or windshield
wiper swhen opening theh ood If
th ew indshield wiper shaveb een folded
bac kfromt he windshield when theh ood is
opened, thew indshield wiper sorthe hood
ma ybed amaged. #
Ensur ethat thew indshield wiper shave
no tb eenf olded bac kfromt he wind‐
shield. Opening
theh ood #
Pull handle 1torelease theh ood. #
Reachi ntot he gapa nd push le ver2ofthe
hood catc htothe left. #
Liftthe hood and hold it in place. #
Pull suppor tstrut 4outofh older 5and
guid eitu pwards in thed irection of thea rrow. #
Lowe rthe hood in suc hawaythat support
st rut 4 slides int orecess 3and theh ood is
fi xe dinp lace.
Closing theh ood &
WARNING Risk offire due toflammable
materials in thee ngine compartmen tor
on thee xhau stsystem
Flammable materials ma yignite. #
Ensur ethat ther ea reno flammable
ex tern al materials in thee ngine com‐
partmen torontheexhaus tsyst em
af te rm aintenance workhas been car‐
ri ed out. *
NO
TEDama getotheh ood due topress‐
ing it closed manually Pushing
theh ood closed wit hyour hands
could dama geit. #
Toclos ethe hood, le titdropf romt he
specified height. #
Hold suppor tstrut 4and raise theh ood
slightl y. #
Guide suppor tstrut 4toholder 5and
apply gentle pressur etoengageit. #
Lowe rthe hood and le titfall from aheight of
appr oximately 12in (30 cm), applying alittle
fo rc easy ou letitgo. #
Ifth eh ood can be lif teds lightl ymore, open
th eh ood once again and allo wittodropm ore
fo rc efull ysot hat it engages cor rectl y. Maintenance and care
17 7

Only
checkt he coolant le vela nd/or fill th ec ool‐
ant if thev ehicle is stationar y,on aleve lsurface
and thee ngine has cooled down. The coolant
te mp eratur emustbeb elow1 22°F (50°C). &
WARNING Risk of bu rnsf romh otcom‐
ponent parts in thee ngine compartment
Cer tainc omponent pa rtsint he engine com‐
partment can be very hot, e.g. thee ngine, the
cooler and pa rtsoft heexhaus tsystem. #
Allowthe engine tocool down and only
to uc hc omponent parts desc ribed in the
fo llowing. #
Coolant con tains glyc ol and is therefor epoi‐
sonous. Obser vethei nformation under
"Operating fluids and capacities"
(/ page230).
* NO
TEPaint wo rkdamag eduetocoolant If coolant
getsonp ainted sur faces, thep aint‐
wo rkcan be damaged. #
Addc oolant carefully. #
Remo vespilledc oolant. Re
gular lych eckt he engine cooling sy stem and
th eh eating sy stem forl ea ks.Ift hereisal oss of
coolant ,have thec ause de term ined and rectified
in aq ualified specialis tworks hop without dela y. Example: cap and coolant
expansion reser voir
Checking thec oolant le vel #
Slowly tur ncap 1 of coolant expansion res‐
er vo ir2 half aturnc oun ter-clockwise and
allo woverpressur etoe scape. #
Turn cap 1further and remo veit. The coolan
tleve lisc orrect in thef ollowing cases:
R Uptomar kerb ar3 when thee ngine is cold
R Ifth ee ngine is warm,upto0 .6 in (1.5 cm)
ove rmarke rb ar3
Ad ding coolant
Only use coolant appr ovedfor Mercedes-Benz to
av oid damaging thee ngine cooling sy stem. #
Refe rtot he information on coolant
(/ page230). #
Refill th ec oolant up tomar kerb ar3 inthe
fi ller openin gofcoolantexpansio nreser voir
2. #
Replace cap 1and tighten in aclockwise
direction. #
Startt he engine. #
Setthe temp eratur einthevehicle interior to
th em aximum output on thec ont rolp anel of
th ec limat econt rol. #
Aftera pproxima tely five minutes, switc hoff
th ee ngine again and allo wittocool down. #
Che ckthec oolant le vela ga in and add coolant
if necessar y. Re
filling thew indshield washer sy stem &
WARNING Risk offire and injur yfrom
windshiel dwashe rconcentrate
Wi ndshield washer concentrat eishighlyflam‐
mable. #
Avoid fire ,o pen flames ,smokin gand
th ec reation of spar kswhen using wind‐
shield washer concentrate. &
WARNING Risk of bu rnsf romh otcom‐
ponent parts in thee ngine compartment
Cer tainc omponent pa rtsint he engine com‐
partment can be very hot, e.g. thee ngine, the
cooler and pa rtsoft heexhaus tsystem. #
Allowthe engine tocool down and only
to uc hc omponent parts desc ribed in the
fo llowing. *
NO
TEDama getothee xterio rlighting
due tounsuitable windshield washer fluid Uns
uitable windshield washer fluid ma ydam‐
ag et he plastic sur face of thee xterio rlighting. #
Onlyuse windshield washer fluids that
ar ea lso suitable foru se on plast ic sur‐ Maintenance and care
181