#
Start the engine of the donor vehicle and run it
at idling speed. #
Start theve hicle and let the engine runfo r a
while. #
Before disconnecting the jump leads, switch
on an electrical consumer in your ow nve hicle,
e.g. there ar wind owheater or the lighting. #
Disconnect the negative term inal clamp of the
jump lead from ea rth contact 4and then
from negative term inal 2ofthe donor bat-
te ry. #
Disconnect the positive term inal clamp of the
jump lead from positive term inal 5onthe
jump-start connection point, and then from
positive term inal 3ofthe donor batter y.
Contact pr otection co ver1 is automatically
re turned forw ards toits original position bythe
spring forc e and the jump-start connection
point is closed. #
Position the co ver on positive term inal 3of
th e donor batter y. #
Have the battery checked at a quali/ed spe-
cialist workshop.
Char
Char ging t
ging t he 12 V batt
he 12 V batt ery
ery
* NO
NOTE
TEDamage tothe electronics caused
by non-appro vedch arging devices Charging a /tted battery with a battery
charger
which has not been appr ovedby Mercedes-
Benz can damage the on-board electronics. #
Only use a battery charge r which has
been appr ovedby Mercedes-Benz and
which permits charging the battery when
it is /t tedintheve hicle. #
Only charge the battery using the jump-
start connection point. A battery
charge r specially adap tedfo r Mercedes-
Benz vehicles and tested and appro vedfor
Mercedes-Benz is available as an accessor y.
Fu rther information is available from any
Mercedes-Benz Se rvice Centre. Read the operat-
ing inst ructions foryo ur charge r before charging
th e batter y.
Re charge the battery more frequently if you use
th eve hicle mainly for short trips and/or drive at
low outside temp eratures. #
Connect the battery charge rto the positive ter-
minal and ear thcontact in the same order as when connecting
the donor battery in the
jump-starting procedu re.
% If a battery is not /tted and not in service, you
should charge itev ery thre e months. This
helps tocounteract self-discharging and pre-
ve nt damage tothe batter y.
12 V batt
12 V batt er
ery care
y care
* NO
NOTE
TEBattery dischar gedue toleakage
cur rents Dirty bat
tery term inal clamps and battery sur-
fa ces cause leakage cur rents. This can lead to
th e battery discharging. #
Keep the battery term inals and battery
sur faces clean and dr y. *
N
NO
OTE
TE Damage tothe battery housing due
to improper cleaning If
yo u use cleaning agents containing fuel,
th ese can damage the battery housing. #
Do not use cleaning agents containing
fuel. *
N NOOTE TE Damage tothe battery due toself-
dischar ge If dirt
gets into the battery cell, the self-dis-
ch arge ofthe battery is increased and the bat-
te ry can be damaged. #
Only clean the battery with the cell caps
scr ewe d in. Obser
vethefo llowing points on battery care: #
Regular lych eck the battery term inals and the
fa stening of the negative cable tothech assis
to ensure that they are /rmly seated. #
Lightly grease the undersides of the battery
te rm inal clamps with acid-resistant grease. #
Only clean the battery housing with commer-
cially available cleaning agents. Disconnecting and r
Disconnecting and r
emo
emoving t
ving t he st
he start
arter batt
er batt ery
ery &
W
WARNING
ARNING Risk ofexplosion due tohydro-
ge nga s igniting
If, when charging a batter y,there is a short cir-
cuit or spar ksstart toform ,th ere is a danger
of hydrogen gas igniting. 242
242
Breakdown assis
tance
