2021 MERCEDES-BENZ METRIS battery

er's door or
thed rive r's and co-d rive r's
door: pressthe0036 button asecon dtime. Re
moving and inse rting thee mer gency key %
The anti-thef
talarms ystem (A TA)ist riggered
when youu nlockand open thev ehicle using
th ee mer gency key( /pag e59). #
Toremo ve: sliderelease catch 1inthe
direction of thea rrow and at thes ame time,
re mo veemer gency key2from thek eycom‐
ple tely. #
Toinser t:push emer gency key2com‐
ple tely in tothek eyuntil it en gage sa nd
re lease cat ch1 is bac kinits basic position. Re
placing the keyb attery &
DANG ER Serious damag etohealth
caused byswallowing batteries
Batteries contain toxic and cor rosiv es ubs tan‐
ces. Swallowing batterie smaycause serious
damag etohealth.
Ther eisar isk offata linjur y. #
Keep batteries out of ther eac hofc hil‐
dren. #
If batteries ar eswallowe d, seek medical
attention immediately. +
ENVIRONMEN
TALN OTE Environmental
damag eduetoimproper disposal of bat‐
te ries Batteries contain pollutants. It is
illegal todispose of them wit hthe household
ru bbish. #
Dispose of batteries in an
environmen tallyr esponsibl emanner.
Ta ke dischar gedb atteries toaq ualified
specialis tworks hop or toac ollection
poin tfor used batteries. Re
quirements:
R Your equir eaCR2 0253Vc ell battery
Changin gthe battery
Mercedes-Benz recommends that youh ave the
batter ychanged at aqualified specialis twork‐
shop. #
Remo vethee mer gency key( /pag e43). #
Press eme rgency key2intot he opening in
th ek eyinthed irection of thea rrow until bat‐
te ry compa rtment co ver1opens. When
doing so, do no thold batter ycompartment
co ver 1shut. #
Tapt he keya gainst thep alm of your han dso
th at battery 3falls out of theb atter ycom‐
partment. #
Inser tthe ne wbatter yintot he batter ytray
wit hthe positiv epole facing up wards. Use a
lint-free clo thtodo so. #
Install batter ycompartment co ver1tothe
ke yc asing wit hthe front lugs firs ta nd push it
closed. #
Slide emergency key2bac kintot he key
( / pag e43). Openin
gand closing 43

Air-reci
rculation mod ewill automaticall yswit ch
on in thef ollowing cases:
R Athigh outside temp eratures
R While thev ehicle is driving thro ugh atunnel
(vehicles wit h3-zon eautomatic climat econ‐
trol and navigatio nonly)
Af tera pproxima tely 30 minutes, outside air will
auto matical lybe introduced again.
Air-recirculation mode will automaticall yswitch
of fint hefollowing cases:
R Aftera pproxima tely five minutes at outside
te mp eratures belo wapproximately 44°F
(7°C)
R Aftera pproxima tely five minutes when the
"Coolin gwitha ir dehumidification "function is
deactivated
R Aftera pproxima tely 30 minutes at outside
te mp eratures abo veappr oximatel y44°F
(7°C) and when the" Cooling wit hair dehu‐
midification "function is switched on Con
venience opening/closing &
WARNING Risk of becoming trapped dur‐
ing con venience opening
During con venience opening ,bod yp arts
could be dr awninorb ecome trapped
between thes ide windo wandthed oor frame. #
When opening, mak esuret hat nobody
to uches thes ide windo w. #
Release the0036 button immediatel yto
inter rupt theo pening procedur eif
somebody becomes trapped. #
Pre-entr yclimat econtrol and con veni‐
ence opening with thek ey: press and hold
the 0036 button on thek ey.
The side windo wsopen automatically and the
blo weroft he climat econt rols ystemisa ctiva‐
te d.
% At
higher interior temp eratures, theb lowe ris
also activated when adoor is opened .This
means that cooled air enter sthe vehicle inte‐
ri or sooner tocool thev ehicle mor erapidly. Switching
ther ear windo wheater on/off The
rear wind owheater consumes alot of elec‐
tricity .You should therefor eswitc hoffther ear windo
wheater as soon as ther ear windo wis
clear. #
Swit chon thei gnition. #
Press the006C button on thec ont rolp anel.
If th ei ndicator lam ponthe006C button
lights up, ther ear windo wheater is switched
on.
The rear wind owheater switches of fautomati‐
cally af teraf ewminutes. Switching
ther esidual heat utiliz ation on/off Onl
yvehicles wit h3-zone automatic climat econ‐
trol ha vether esidual heat function.
When thee ngine is switched off, it is possible to
mak euse of ther esidual heat of thee ngine to
heat or ventilat ethe vehicle interior fora pprox‐
ima tely 30 minutes. The heating or ventilation
time depends on thes etvehicle interior temp era‐
ture. #
Switc hoffthee ngine or remo vethek ey. #
Toswitc hon:press the004B button.
When residualh eat utilization is switched on,
th ei ndicator lam ponthe004B button will
light up.
The blo werw illr un at alow speed rega rdless
of thea irflow setting.
If th e" Residual heat" function is switched on
at high outside temp eratures, onl ythe sta‐
tionar yventilation will be switched on. The
blo werw illt hen runatm ediumspeed. #
Toswitc hoff:press the004B button again.
The indicator lam ponthe004B button will go
out.
Re sidualh eat utilization will switc hoffautomati‐
cally in thef ollowing cases:
R Afterar unnin gtime of appr oximately
30 minutes
R Ifth es tarter battery's conditio nofchargeis
to ol ow
R When thei gnition is switched on Operating air
vents Ad
justin gthe air vents &
WARNING Risk of bu rnsa nd frostbite
due tobeing tooc lose tothea irve nts
Ve ry hotorv eryc old ai rcan flow from thea ir
ve nts. Clima
tecontrol 95

R
Remain in thev ehicle if ther oad and traf fic
conditions permit youtodosou ntilavoice
connection is es tablished wit hthe emergency
call cen tero perator.
R Base dont he call, theo perator decides
whe ther it is necessar ytocallr escue teams
and/or thep olice tothea ccident site.
R In cer tain situations dat aisalso transmitted
in thev oice channel totheM ercedes-Benz
emer gency cal lcenter.
Thi sallow sm easu resf or rescue, reco very or
to wing toaM ercedes-Ben zCommercial Van
Center tobe initiated quickl y.
If th eM ercedes-Benz emer gency cal lsyst em can‐
no tc onnect totheM ercedes-Benz emer gency
cal lcenter ,the emergency call is automatically
sent tothep ublic emer gency service scallc enter.
If no connection can be mad etothe public emer‐
ge ncy services, acorresponding message
appears inthed ispla y.In this case youm ustd ial
th ee mer gency cal lnumber 11 2onyour mobile
phone.
Ending an unin tentional emer gency call #
Vehicles without steering wheel but tons:
press the0078button in thei nstrument clus ter. #
Vehicles with steering wheel but tons:
press the0076 button on thes teering wheel. #
Close theS OS button co ver Data trans
feroft he Mercedes-Ben zemer‐
ge ncy call sy stem In
thee vent of an au tomatic or manua lemer‐
ge ncy call, as well as fora 11 2 emer gency call,
da ta is transmitte dtothe Mercedes-Benz emer‐
ge ncy cal lcenter or thep ublic emer gency serv‐
ice scallc enter.
The following dat aistransmit ted:
R Vehicle's GPS position data
R (GPS position dat aontheroute(af ewhundred me ters befor ethe incident))
R Direction of tr avel
R Vehicle identification number
R Vehicle driv etype
R Number of persons on thef ront seats
R Whe ther thee mer gency cal lwas initia ted
manually or automatically
R Time of thea ccident
R Languag esetting Fo
ra ccident clarificatio npurposes ,the following
measures can be take nu ptoa nhour af tert he
emer gency cal lhas been initia ted:
R The cur rent vehicle position can be called up
R Avoice connection tothev ehicle occupants
can be es tablished Flat tire
Note
sonf lat tires &
WARNING Risk of accident du etoaflat
tire
Af lat tir eaffects thed riving characteristic sof
th ev ehicle. #
Do no tdrive wit haf lat tire. #
Replace thef lat tir ewitht he emer gency
spa rewheel or spar ewheel. Alterna‐
tivel y,consult aqualified specialist
wo rkshop. Yo
uw illfind astickerw itht he Mercedes-Benz
Service24h telephon enumbe ronthe B-pillar on
th ed rive r's side, fore xamp le.
Fo rv ehicles wit hasparew heel, information in
th ee vent of aflat tir ecan be found under
"Wheels and tires" (/ page216). Battery
Note
sont hestar terb attery Wo
rkon theb atter y,e.g. removing or ins talling,
requ ires specialis tknowledg eand theu se of spe‐
cial tools. Therefore, alw aysh ave workon the
batter ycarried out at aqualified specialis twork‐
shop. &
WARNING Risk of an accident du eto
wo rkcar ried out incor rectl yont he bat‐
te ry
Wo rkcar ried out incor rectly on theb attery
can, fore xamp le, lead toas hor tcircuit .This
can restrict functions releva nt fors afet ys ys‐
te ms and impairt he operating saf etyofy our
ve hicle. Breakdown assis
tance 18 9

Yo
uc oul dlose control of thev ehicle in the
fo llowing situations in particular:
R When braking
R Inthee vent of ab rupt steering maneuvers
and/or when thev ehicle's speed is not
adap tedtot heroad conditions #
Inthee vent of ashortcircui tora simi‐
la ri ncident, contact aqualified special‐
is tw orks hop immediately. #
Do no tdrive on. #
Alwaysh ave workon theb atter ycarried
out at aqualified specialis tworks hop. R
Further information on ABS (/ page111 )
R Further information on ESP ®
(/ page111 )
Fo rs afet yr easons, Mercedes-Benz recommends
th at youo nly use bat teries that ha vebeen tested
and appr oved fory our vehicle byMercedes-Benz.
These batteries pr ovide inc reased impact pr otec‐
tion toprev ent vehicle occupants from suf fering
aci db urns should theb atter ybed amaged in an
accident. &
WARNING Risk ofexplosion due toelec‐
tros tatic charge
Electros tatic charge can igni tetheh ighly
ex plosiv egas mixtur einthe batter y. #
Todischar geanye lectrostatic charge
th at ma yhave built up, touc ht he me tal
ve hicle body befor ehandling theb at‐
te ry. The highly
flammable gasm ixtur eisc reated while
th eb atter yisc harging and when jump-s tarting.
Mak esuret hat neither youn ortheb atter yis
electros tatically charge d.
Elect rostatic charge can occu rinthefollowing
cases ,for example:
R Youa rewe aring synthetic clo thing.
R Ther eisf riction between your clo thing and
th es eat.
R Youd ragorp ushtheb atter yacross acarpet
or other synthetic materials.
R Your ub theb atter ywithc loth sort owels. &
WARNING Danger of chemical burns
from theb atter yacid
Batter yacid is caustic. #
Avoid contact wit hthe skin, eyes or
clo thing. #
Do no tlean overthe batter y. #
Do no tinhal ebattery gases. #
Keep children away from theb atter y. #
Immedia tely rinse batter yacido ffthor‐
oughly wit hplenty of clean waterand
seek medica lattention immediately. +
ENVIRONMENTAL
NOTEEnvironmental
damag eduetoimproper disposal of bat‐
te ries Batteries contain pollutants. It is
illegal todispose of them wit hthe household
ru bbish. #
Dispose of batteries in an
environmen tallyr esponsibl emanner.
Ta ke dischar gedb atteries toaq ualified
specialis tworks hop or toac ollection
poin tfor used batteries. Obser
vethes afet yn otes and pr otectiv emeas‐
ures when handling batteries. Risk of
explosion Fire, open
flames and smokin gare
prohibited when handlin gthe batter y.
Av oid creating spar ks. Electrolyte
or batteryacid is cor ro‐
sive. Avoid contact wit hthe skin, eyes
and clo thing. Wear suitable pr otective
clo thing, in particular glove s, an apron
and asafet ym ask. Immedia tely rinse
electrolyt eacids plashes of fwith
clea nwater .Ifn ecessar y,seek medi‐
cal advice. We
areyep rotection. 19 0
Breakdown assis tance

Ke
ep children at asafed ista nce. Obser
vethese Operating Instructions.
Obser vethef ollowing no tes:
R Recharge theb atter ymoref requ entl yint he
fo llowing cases:
- Youp redominantl ydrive shor tdista nces.
- Youp redominantl ydrive at lo woutside
te mp eratures.
- Youl eave thev ehicle par kedf or alengt hy
period.
In order fort he batteries toachie vetheir max‐
imum possible service life, they mus talways
be suf ficiently charge d.
R Consult aqualified specialis tworks hop if you
wish tolea veyour vehicle par kedupf or a
long period of time.
R When youp arkt he vehicle, remo vethek eyif
yo udon otrequ irea nyelect rical consumers.
The vehicle will then use very little energy,
th us conservin gbatte ry powe r.
R Ifyo ur vehicle requ ires jump-s tarting, or if you
wish toprov ide jump-s tarting assis tance to
ano ther vehicle, only use thej ump-s tart con‐
nectio npoint in thee ngine compartment
(/ page191).
Installa tionlocations
Yo ur vehicle ma ybeequipped wit hthe following
th re eb atteries, depending on thee quipment ver‐
sion:
R Starterb atter yint he seat base of ther ight-
hand front seat
R Suppor tbatter yint he seat base of ther ight-
hand front seat
R Auxilia rybatter yinthe seat base of thel eft-
hand front seat St
arting assistanc eand chargin gthe 12 V
battery &
WARNING Risk ofexplosion from afro‐
zen battery
Ad ischar gedb atter ymayfreeze at temp era‐
tures slightl yabove or belo wfreezing point.
During startin gassis tance or batter ycharg‐
ing, batter ygas can be released. #
Alwaysa llowab atterytot hawb efore
ch argin gitorp erform ing startin gassis‐
ta nce. If
th ew arning/indicator lamps do no tlight up in
th ei nstrument clus teratt emperatures around or
belo wfreezing, it is highl yprobable that thed is‐
ch arge db atter yhas frozen.
In this case, obser vethef ollowing points:
R Do no tgivet he vehicle startin gassis tance or
ch arge theb attery
R The service lif eofabatterythat has been
th awe dmaybe reduced drastically
R The startin gbehavior ma ydeteriorate, partic‐
ularly at lo wtemperatures
R It is recommended that youh ave athawed
batter ychec kedataq ualified specialis twork‐
shop &
WARNING Risk ofexplosion during
ch argin gprocess and startin gassis tance
During thec harging process and starting
assis tance, theb atter ymayrelease an explo‐
siv eg as mixture. #
Avoid fire ,o pen flames ,creating spar ks
and smoking. #
Mak esuret her eiss ufficient ventilation. #
Do no tlea no verab atter y. &
WARNING Danger of chemical burns
from theb atter yacid
Batter yacid is caustic. #
Avoid contact wit hthe skin, eyes or
clo thing. #
Do no tlean overthe batter y. #
Do no tinhal ebattery gases. #
Keep children away from theb atter y. Breakdown assis
tance 191

Te
rm inal connection diagram #
Remo vethec ove rfromp ositiv eterminal 3
of thed onor batter y. #
Connec tthe positiv eterminal clam pofthe
jumper cable topositiv eterminal 3ofthe
donor batter y,and then topositiv eterminal
5 ofthej ump-s tart connection point. #
Connect then egativ eterminal clam pofthe
jumper cable tonegati ve terminal 2ofthe
donor batter y,and then toground cont act4
of your ow nv ehicle. #
Startt he engine of thed onor vehicle and run
it at idling speed. #
Inser tthe keyintot he ignition loc k,star tt he
engine and le titrunfors eve ralm inutes. #
Befor edisconnecting thej umper cables,
switc honane lectrical consumer in your own
ve hicle, e.g. ther ear windo wheater or the
lighting. #
Disconnect then egativ eterminal clam pof
th ej umper cable from ground contact 4and
th en from negativ eterminal 2ofthed onor
batter y. #
Disconnect thep ositiv eterminal clam pofthe
jumper cable from positiv eterminal 5on
th ej ump-s tart connection point, and then
from positiv eterminal 3ofthed onor bat‐
te ry.
Con tact pr otection co ver1is automatically
re turned forw ards toits original position by
th es pring forc ea nd thej ump-s tart connec‐
tion point is closed. #
Position thec ove ronp ositiveterminal 3of
th ed onor batter y. #
Have theb atter ychec kedataq ualified spe‐
cialis tworks hop. Charging
the12Vb attery
* NO
TEDama getothee lectronics caused
by non-app rove dc harging devices Charging an ins
talled batter ywithab attery
ch arge rw hichh as no tbeen appro vedby
Mercedes-Benzc an damagethe on-board
electronics. #
Onlyuseab atter ycharger whic hhas
been appro vedbyM ercedes-Benza nd
whic hpermits chargin gthe battery
when it is ins talled in thev ehicle. #
Onlycharg ethe batter yusing thej ump-
st ar tc onnectio npoint. Ab
atter ychar gers pecially adapte dfor
Mercedes-Ben zvehicles and tested and appr oved
fo rM ercedes-Benz is available as an accesso ry.
Fu rther information is available from any
Mercedes-Ben zCommercial VanC enter.Re ad the
operating instructions fory our charge rb efore
ch argin gthe batter y.
Re charge theb atter ymoref requ entl yify ou use
th ev ehicle mainl yfor shor ttrips and/or driv eat
lo wo utsid etemperatures. #
Connec tthe batter ychar gertot he positive
te rm inal and ground con tact in thes ame
order as when connectin gthe donor battery
in thej ump-s tarting procedure.
% If
ab atter yisn otins talled and no tinservice,
yo us houl dcharg eite very thre em onths. This
helps tocounteract self-discharging and pre‐
ve nt damag etothe batter y.
12 Vb atter ycare
* NO
TEBatter ydisch arging du etoleakage
cur rent Dirty batter
yclamp sand batter ysurfaces
cause lea kage cur rent. Thi scan lead tothe
batter ydischarging. #
Keep theb atter yterminals and battery
sur faces clea nand dr y. *
NO
TEDama getotheb atter yhousing
due toimproper cleaning If
yo uu se cleanin gagentsc ontainin gfuel,
th ese can damag ethe batter yhousing. #
Do no tuse cleaning agentsc ontaining
fuel. Breakdown assis
tance 19 3

*
NO
TEDama getotheb atter ythrough
self-discharging If dir
tenter sthe batter ycell, batter yself-dis‐
ch argin gwill accelerat eand theb atter ymay
be damaged. #
Onlyclean batteries when thec aps are
scr ewed on. Obser
vethef ollowing points on batter ycare: #
Regular lych eckt he batter yterminals and the
fast ening of then egativ ecable tothec hassis
to ensur ethat they aref irml yseated. #
Lightly grease theu ndersides of theb attery
te rm inal clamps wit hacid- resis tant grease. #
Only clean theb atter yhousing wit hcommer‐
cially available cleaning agents. Disconnecting and
removing the star terb at‐
te ry &
WARNING Risk ofexplosion from hydro‐
ge ng as igniting
The reisad anger of hydrogen gasigniting
when chargin gthe batter yifthereisas hort
circuit or spar ksstar ttof orm. #
Mak esuret hat thep ositiv eterminal of
th ec onnected batter ydoes no tcome
int oc ontact wit hvehicle parts. #
Neverp lace me talo bject sort ools on a
batter y. #
The described order of theb attery
clamps mus tbeobservedw hen con‐
necting and disconnecting theb atter y. #
When giving startin gassistance, alw ays
mak esuret hat youo nly connec tbattery
te rm inals wit hidentical polarity. #
During startin gassis tance, youm ust
obse rvet he described order forc on‐
necting and disconnecting thej umper
cable. #
Do no tconnect or disconnect theb at‐
te ry cla mp sw hile thee ngine is running. &
WARNING Danger of chemical burns
from theb atter yacid
Batter yacid is caustic. #
Avoid contact wit hthe skin, eyes or
clo thing. #
Do no tlean overthe batter y. #
Do no tinhal ebattery gases. #
Keep children away from theb atter y. #
Immedia tely rinse batter yacido ffthor‐
oughly wit hplenty of clean waterand
seek medica lattention immediately. *
NO
TEDama getoelectronic components
due towo rkcar ried out incor rectly on the
battery If
th es tarterb atter yisd isconnected before
th ek eyisremo vedf romt he ignition loc k,
electronic components or assemblies, such
as thea lternator ,can be damaged. #
Switc hoffthee ngine and remo vethe
ke yf romt he ignition loc k. #
Chec ktos eethat ther ea reno indicator
lamps lit in thei nstrument clus ter. #
Alwaysr emo vethen egativ eterminal
clam pfirst and then thep ositiv etermi‐
nal clamp. #
Do no tinter chang ethe batter yclamps. Alw
aysh ave workon theb atter ycarried out at a
qu alified specialis tworks hop.
If, in exceptional circums tances, youm ustd is‐
connec tthe batter yyourself, pa yattention tothe
fo llowing:
R Obser vethen otes on the12Vb attery
(/ page189).
R Secur ethe vehicle topreve nt it from rolling
aw ay.
R Forv ehicles wit hanautomatic transmission,
th et ransmission is loc kedinp osition 005Dafter
disconnecting theb atter y.Yo uc an then no
longer mo vethev ehicle.
R The batter yand thec over of thep ositiv eter‐
mina lclamp mus tbeinstalled securel yduring
operation. 194
Breakdown assis tance

Sea
tbase( example: right-han dfront seat)
The following description on connectin gand
ins talling theb atter yuses thee xamp le ofthe
st ar terb atter yint he seat base of ther ight-ha nd
front seat.
The auxiliar ybatter yisd isconnected and
re mo vedint he same wayast hestar terb atter y.
The auxiliar ybatter yislocated in thes eat base of
th el eft-hand front seat. #
Switc hoffall electrical consumers. #
Switc hoffthee ngine and remo vethek ey
from thei gnition loc k. #
Open thef ront right-han ddoor. #
Press bo thcatc hsprings 1down and
re mo vecover 2upwards from thes eat
base. #
Remo vecover 2bypulling upwards at an
angle from thes eat base. Open seat base (e
xamp le:right-han dfront seat) #
Remo vescr ews 5from holder 6. #
Remo veholder 6. #
Remo ve ve nt hose 4from thet op of theb at‐
te ry. #
Pull theb atter yout of thes eat base until the
negati ve terminal clam pcan be released and
re mo ved. #
Disconnect then egativ eterminal clam pfrom
negativ eterminal 3. #
Remo vethen egativ eterminal clam pinsucha
wa ythat theb atter yterminal clam pnolonger
to uches negativ eterminal 3. Example:
star terb attery #
Remo vetheb atter yfromt he seat base and
place it on thed oor sill as shown. If neces‐
sar y,hold theb atter ybyh andles 9. #
Remo vethep ositiv eterminal clam pcover
from positiv eterminal 7. #
Remo vepositiv eterminal clamp 8from pos‐
itiv eterminal 7. #
Remo vepositiv eterminal clamp 8in suc ha
wa ythat theb atter yclam pnol onger touches
positiv eterminal 7. #
Liftthe batter yout of thed oor sill byhandles
9. Connecting and installing
thes tar terb attery &
WARNING Risk ofexplosion from hydro‐
ge ng as igniting
The reisad anger of hydrogen gasigniting
when chargin gthe batter yifthereisas hort
circuit or spar ksstar ttof orm. #
Mak esuret hat thep ositiv eterminal of
th ec onnected batter ydoes no tcome
int oc ontact wit hvehicle parts. #
Neverp lace me talo bject sort ools on a
batter y. #
The described order of theb attery
clamps mus tbeobservedw hen con‐
necting and disconnecting theb atter y. #
When giving startin gassistance, alw ays
mak esuret hat youo nly connec tbattery
te rm inals wit hidentical polarity. #
During startin gassis tance, youm ust
obse rvet he described order forc on‐
necting and disconnecting thej umper
cable. Breakdown assis
tance 19 5