charging MERCEDES-BENZ METRIS 2021 MY21 Operator's Manual

The
releva nt pe rmitted values, whic hmustn otbe
exc eeded, can be found in thef ollowing places:
R Inyour vehicle documents
R Onthei dentification plat eofthe trailer hitch
R Onthet railer's identification plate
R Onthev ehicle identification plate
If th er ea rediscrepancies between thev alues, the
lo we stone shall appl y.
Befor edriving off, ensu rethef ollowing:
R The tir epressur eont herear axle of thet ow‐
ing vehicle has been se tfor them aximum
load.
R The headlamps ha vebeen se tcorrectly.
Va lues appr oved bythem anufacturer can be
fo und on thei dentification plates and in thes ec‐
tion fort he towing vehicle (/ page207).
If yo ur equir eexplanations rega rding thei nforma‐
tion in theO perator's Manual, contact a
Mercedes-Benz Commercial VanC enter.
Co mp ly wi th th emaximum permissible speed of
50 mph(80 km/h) or 62 mph(100k m/h), even
in countries in whic hhigher speeds ar epermit ted
fo rv ehicle/trailer combinations.
At tach onl yana pprove dtrailer hitc htoyourvehi‐
cle. Use onl yaball nec kthat has been appr oved
fo ry our vehicle. Further information about availa‐
bilit yand ins tallation ,including that of thet railer
electrics, is available from an yqualified specialist
wo rkshop.
% Yo
ur vehicle's bumper sarenots uitable for
ins talling de tach able trailer hit ches.
Do no tattac hanyrented traile rhitch es or any
ot her de tach able trailer hit ches totheb umpers.
Re duce ther isk of damag etothe ball nec k.Ifyou
do no tneed theb all nec k, removeit from theb all
nec km ount.
% During trailer operation,
remember that
PA RKTRONI Cisavailable onl ytoalimited
ex tent, if at all.
% The height of
theb all head will change
depending on thev ehicle's load. In this case,
use atrailer wit haheight-adjus table dr aw‐
bar. Coupling/uncoupling
atrailer Re
quirements:
R The ball nec kmustbee ngaged in asecurely
loc kedp osition.
Tr ailer swith7 -pin plugs can be connec tedtot he
ve hicle using thef ollowing adap ters:
R Adapterp lug
R Adapterc able
Coupling atrailer
* NO
TEDama getothes tarter batter ydue
to full discharge Charging
thet railer batter yusing thep ower
supply of thet railer can damag ethe star ter
batter y. #
Do no tuse thev ehicle's po wersupply
to charge thet railer batter y. #
Vehicles with automatic transmission:
shif tthe transmission toposition 005D. #
Appl ythe vehicle's parking brake. #
Close all thed oors. #
Position thet railer on alevel sur face behind
th ev ehicle.
% The height of
theb all head will change
depending on thev ehicle's load. In this case,
use atrailer wit haheight-adjus table dr aw‐
bar. #
Couple up thet railer. #
Toinstall an ada pter: open thec ove roft he
soc ket. #
Inse rtthep lug wit htab 1 intot he soc ket's
groo ve3 . #
Turn bayone tc oupling 2tother ight as far
as it will go. #
Letthe co vere ngage. 13 2
Driving and pa rking

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

Non-
operational times wit hthe
batter ydisconnec ted.......................... 176
Re gular maintenance work................. 176
Special service requirements.............. 176
ATA (Anti-Thef tAlarms ystem)
Ac tivating and deacti vating the
interior motion sensor.......................... 61
Fu nction............................................... 59
Interio rmotions ensor functio n............ 60
St opping thea larm............................... 60
Switching thet ow -awa ya larmon
and off................................................. .60
To w- aw ay alar mfunction...................... 60
At tachments............................................ .14
AT TENTION ASSI ST
Fu nction............................................. 127
Switching on/of f(ve hicle swith
st eering-wheel buttons)......................1 28
Switching on/of f(ve hicles without
st eering-wheel buttons)......................1 28
Sy stem limitations.............................. 127
Au dio sy stem (on-boa rdcompu ter)...... 147
Au thorized workshop
see Qualified specialis tworks hop
Au tomatic distanc econtrol
se eA ctiv eDista nce Assi stDISTRONIC
Au tomatic drivin glights .......................... 77
Au tomatic fron tpassen gerfront air‐
bag shu toff
Fu nctio noft he automatic front
passenger front airbag shutoff............. 30
PA SSENGER AIR BAGi ndicator lamp... .31
Au tomatic fron tpassen gerfront air‐
bag shu toff
see Automatic front passenger
front airbag shutoff
Au tomatic measures af terana cci‐
dent........................................................... 33
Au tomatic transmission
DIRECT SELEC Tleve r........................ .104
Engaging driv eposition...................... 105
Engaging neutral................................ 105
Engaging reve rseg ear....................... .105
Kickdown............................................ 106
Re stricting thes hiftrange................. .106
Selecting par kposition.......................1 05
Tr ansmission position displa y............. 104
Tr ansmission position s.......................104
Axl eload................................................ .226 B
Bac ksupport
see Lumbar suppor t(4-w ay)
Backin gupwarningdevice
No tes.................................................. 121
BA S(Brak eAssis tSystem).................... .111
Battery Care.................................................... 191
Charging............................................. 191
Chargin gavehicle batter y.................. 191
Connecting and ins talling thea uxil‐
iar yb attery.........................................1 95
Connecting and ins talling the
st ar terb attery.................................... 19 5
Disconnecting and removing the
auxiliar ybatte ry .................................. 194
Disconnecting and removing the
st ar terb attery.................................... 194
Jump-s tarting (vehicle)........................ 191
Ke y...................................................... .43
No tes( vehicle)................................... 189
Belt see Sea tbelt
Bel twarning
see Sea tbelt
Blind Spo tAssist
Fu nction............................................. 12 9
Switching on/of f................................ 12 9
Sy stem limitations.............................. 12 9
Blue tooth ®
audio
Information........................................ .163
Blue tooth ®
settings (multimedia
sy stem).................................................. .153
Bottle holder............................................. 75
Brake ABS (Anti-loc kBraking Sy stem)........... 111
Ac tivating/deactivating theH OLD
function.............................................. 121
Ac tiveB rake Assi st............................. 11 3
BA S(Brak eAssistSystem).................. 111
Braking wi thparkin gbrake :................1 00
Breaking-in no tes................................. 97
Downhil lgradien t............................... 100
Driving no tes................................ 98, 100
EBD (electroni cbrake forc ed istri‐
bution)................................................ 11 3
Heavy and light loads........................ .100
HOLD function................................... .121
Ne wb rake discs and brak epads/
linings................................................. 100 Index
271