2016 MERCEDES-BENZ METRIS jump start terminals

starter battery. The auxiliary battery is located in
the seat base of the left-hand front seat.
XSwitch off all electrical consumers.
XSwitch off the engine and remove the Smart-
Key from the ignition lock.
XOpen the front door on the right-hand side.
iTo disconnect or remove the additional bat-
tery, open the left-hand front door. The auxil-
iary battery is located in the seat base of the
left-hand front seat.
XPress both latching springs :down and
remove cover ;upwards from the seat base.
XRemove cover ;by pulling upwards at an
angle from the seat base.
Open seat base (example: right-hand front seat)
XRemove screws Afrom holder B.
XRemove holder B.
XRemove breather hose ?from the top of the
battery.
XPull the battery out of the seat base until the
negative clamp can be released and removed.
XDisconnect the negative clamp from negative
terminal =.
XRemove the negative clamp in such away that
the battery cable terminal no longer touches
negative terminal =.
Example: starter battery
XRemove the battery from the seat base and
place it on the door sill panel as shown. If
necessary, hold the battery by handles E.
XRemove the positive clamp cover from posi-
tive terminalC.
XLoosen positive clamp Don positive terminal
C.
XRemove positive clamp Din such away that
the battery cable terminal no longer touches
positive terminal C.
XLift the battery from the door sill panel by
handlesE.
Reconnecting and installing
GWARNING
During the charging process, abattery produ-
ces hydrogen gas. If ashort circuit occurs or
sparks are created, the hydrogen gas can
ignite. There is arisk of an explosion.
RMake sure that the positive terminal of a
connected battery does not come into con-
tact with vehicle parts.
RNever place metal objects or tools on abat-
tery.
RIt is important that you observe the descri-
bed order of the battery terminals when
connecting and disconnecting abattery.
RWhen jump-starting, make sure that the
battery poles with identical polarity are
connected.
Battery251
Maintenance and care
Z

RIt is particularly important to observe the
describedorder when connecting and dis-
connecting the jumper cables.
RNever connect or disconnect the battery
terminals whil ethe engine is running.
!Alway sconnect the battery in the order
describedb elow. Never mix up the terminal
clamp disconnection/connection order and
never mix up the terminal clamps. You may
otherwise damage the vehicle electronics.
Alway sobserve the prescribedp ositive ter-
minal installation positionw hen doing so.
Otherwise ,the positive clamp may come into
contact with vehicle parts. In this case there is
ar isk that the vehicle may short-circuit and
catch fire.
The following descriptiononc onnecting and
installing the battery is base dupon the example
of the starter battery in the seat base of the
right-hand front seat. The additional battery is
connected and installe dinthe same way as the
starter battery. The auxiliary battery is located in
the seat base of the left-hand front seat.
Example: starter battery
XPlace the battery on the door sill panel as
shown and secure with handles =if neces-
sary.
XConnect positive clamp ;to positive termi-
nal :.A lwaysobserve the positive terminal
installation positions hown when doing so.
The positive leadm ust be routed parallel to
the side of the battery housing in the connec-
tion area.
XPlace the positive clamp cover on positive
terminal :.
XFold both handles =down onto the battery.
XPush the battery into the seat base until the
negative terminal can be connected.
XConnect the negative clamp to negative ter-
minal ?.
XPush the battery into the seat base as far as it
wil lgo.
Open seat base with installe dbattery (example:
right-hand front seat)
XPush breather hose Aonto the battery con-
nection at the top.
XGuide holder Cover the lowers ide of the
battery housing and the threads for screws
B.
XScrew on holder Cwith screws B.
The battery is secured to prevent slipping.
Seat base (example: right-hand front seat)
XInsert cover Edown in front of the battery
compartment into the seat base and close it.
Latching springs Dof cover Eshould
engage audibly.
Carry out the following work after connecting
the battery:
XRese tthe side window (Ypage 81).
XRese tthe electric sliding doors (Ypage 77).
252Battery
Maintenancea nd care

Charging
GWARNING
Ad ischarged battery can freezeatt empera-
tures below freezing point. When jump-start-
ing th evehicle or chargin gthe battery, gases
can escape from th ebattery. Thereisar isko f
an explosion.
Allow th efroze nbattery to thaw out before
chargin gitorjump-starting.
If th eindicator/warning lamps do no tlight up in
th ei nstrumen tcluste rwhen temperatures are
low, it is probably because th edischarged bat-
tery has frozen.S hould this be th ecase, do not
jump-star tthe vehicle or charge th ebattery. The
servic elife of athawed battery may be shorter.
Start-up behavior may deteriorate, in particular
at low temperatures. Hav ethe thawed battery
checked at aqualified specialist workshop.
GWARNING
During chargin gand jump-starting, explosive
gases can escape from th ebattery. Thereisa
ris kofane xplosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilatio nwhile chargin gand jump-starting.
Do no tlean ove rabattery.
GWARNING
Battery acid is caustic .Thereisar iskofi njury.
Avoid contac twiths kin, eyes or clothing .Do
no tinhale any battery gases.Don otlean over
th eb attery. Keep childre naway from batter-
ies. Wash away battery acid immediately with
plenty of clean wate rand seek medical atten-
tion.
!Only charge th einstalled battery withab at-
tery charge rtha th as been tested and
approved by Mercedes-Benz. This device
allows th ebattery to be charge dwhen it is
installed in th evehicle .The vehicle's elec-
tronics system may otherwise be damaged.
!Only charge th ebattery usingt hejump-
starting connection point.
Ab attery charge runit specially adapted for
Mercedes-Ben zvehicle sand tested and approved by Mercedes-Ben
zisavailable as an
accessory. Only this device permits th echarging
of th ebattery in its installed position. Contac tan
authorized Mercedes-Ben zCommercial Van
Cente rfor informatio nand availability. Read the
operatin ginstructionsf or your charge rbefore
chargin gthe battery.
Recharge th ebattery mor efrequently if you use
th ev ehicle mainly for short trips and/or driv eat
low outside temperatures.
Only charge th einstalled battery withab attery
charge rtha th as been tested and approved by
Mercedes-Benz, usingt hejum p-st
artc on
nec-
tio np ointint heenginec ompartment.
XConnect th ebattery charge rtothepositive
terminal and ground terminal in th esame
order as when connecting th edonor battery in
th ej ump-startin gprocedure (
Ypage 262).
iRecharge uninstalled, out of servic ebatter-
ies every 3month s.This will counter self-dis-
charging and prevent battery damage.
Care
!
Dirt ybattery clamps and battery surfaces
cause leak currentsw hich lead to the batter-
ies discharging.
!Do not use cleaning agents containing fuel.
Cleaning agents containing fuel corrode the
battery housing.
!If dirt gets into the battery cell, battery self-
discharge will increase and the battery may
be damaged.
The following points on battery care must be
observed:
XRegularly check the battery terminals and the
fastening of the negative cable to the chassis
to ensure that they are firmly seated.
XAlways keep the battery terminals and battery
surfaces clean and dry.
XLightly grease the undersides of the battery
terminals with acid-resistant grease.
XOnly clean the battery casing with acommer-
cially availablec leaning product.
Battery253
Maintenance and care
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