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#
Slide cover 1 of positive clamp 2 on the
jump-starting connection point in the direc‐
tion of the arrow.
#
Connect positive clamp 2 on your vehicle to
the positive pole of the donor battery using
the jumper cable/charging cable. Always
begin with positive clamp 2 on your own
vehicle first.
#
During starting assistance: start the
engine of the donor vehicle and run at idle
speed.
#
Connect the negative pole of the donor bat‐
tery and ground point 3 of your own vehicle
by using the jumper cable/charging cable.
Begin with the donor battery first.
#
During starting assistance: start the
engine of your own vehicle.
#
During the charging process: start the
charging process.
#
During starting assistance: let the engines
run for several minutes.
#
During starting assistance: before discon‐
necting the jumper cable, switch on an elec‐
trical consumer in your own vehicle, e.g. the
rear window heater or lighting.
When the starting assistance/charging process
is complete, perform the following steps:
#
First, remove the jumper cable/charging
cable from ground point 3 and the negative
pole of the donor battery, then from positive
clamp 2 and the positive pole of the donor
battery. Begin each time with the contacts
on your own vehicle first.
#
After removing the jumper cable/charging
cable, close cover 1 of positive clamp 2.
Further information can be obtained at a quali‐
fied specialist workshop.
Replacing the 12 V battery
#
Observe the notes on the 12 V battery
(/ page 372).
Mercedes-Benz recommends that you have the
12 V battery replaced at a qualified specialist
workshop, e.g. at an authorized Mercedes-Benz
Center.
Observe the following notes if you want to
replace the battery yourself:
R
Always replace a faulty battery with a battery
which meets the specific vehicle require‐
ments.
The vehicle is equipped with an AGM technol‐
ogy battery (Absorbent Glass Mat) or a lith‐
ium-ion battery. Full vehicle functionality is
Breakdown assistance
377
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