GWarning!
The electrolyte, i.e. the battery fluid, is toxic
and caustic. Do not allow this fluid to come in
contact with eyes, skin or clothing, for
example in case of an accident.
In case it does, immediately flush affected
area with water and seek medical help
immediately.
For information on the location of the 12-volt
battery and the high-voltage battery, see
(Y page 13).
! Deep discharge caused by prolonged
periods of the vehicle not being used, can
damage the high-voltage battery.
During such periods, operate the vehicle
every 4 weeks for several minutes in order
to charge the high-voltage battery.
During the charging process, switch off
electrical consumers that are currently not
needed, e.g. climate control system or seat
heating.
If necessary, get a jump start.
GWarning!
Inhalation of exhaust gas is hazardous to your
health. All exhaust gas contains carbon
monoxide (CO), and inhaling it can cause
unconsciousness and lead to death. Do not
run the engine in confined areas (such as a
garage) which are not properly ventilated.
If you do not intend to operate your vehicle
for an extended period of time, contact an
authorized Mercedes-Benz Center about
steps you need to observe.
Removing/installing high-voltage
battery cover
XEngage the electronic parking brake.XShift the automatic transmission into park
position P.
XSwitch off the ignition.
The green or yellow READY indicator lamp
(Y page 16) in the instrument cluster goes
out.
XRemove the SmartKey from the starter
switch or remove the SmartKey with
KEYLESS-GO from the vehicle.
XObserve the safety notes on the danger of
electric shock in this manual.
XObserve the safety notes regarding the
hood in the Operator's manual.
XOpen the hood, see Operator's Manual.
Removing
XTurn locks 1 clockwise by 90°.XLift cover 2 as indicated by the arrows and
remove it forward as seen in driving
direction.
XStore cover 2 in the trunk for example.
Installing
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XPlace cover 1 onto the high-voltage
battery carefully.
XPush holder 2 onto pin 3.XTurn locks 4 counterclockwise by 90°.
The cover is locked.
Removing/installing jump start
contact cover
XRemove the high-voltage battery cover, see
(Y page 27).
Removing
XDisengage tabs :.XRemove cover ;.XStore cover 2 in the trunk for example.
Installing
XPosition cover ;.XPress down on cover ; until tabs 1
engage.
XInstall the high-voltage battery cover.! The cover must be positioned and
installed properly. Otherwise moisture
and/or dirt may impair fuse operation.
XClose the hood.
Charging the batteries
Charging the 12-volt battery
GWarning!
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during
charging and could cause an explosion that
may result in personal injury, paint damage or
corrosion.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available. It permits the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Center for
information and availability.
Charge battery in accordance with the
separate instructions for the accessory
battery charger.
XRemove the high-voltage battery cover
(Y page 27).
XRemove the jump start terminal cover
(Y page 28).
XFollow the instructions in the separate
operating instructions of the charge unit.
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