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338 Breakdown assistance
338
of the donor battery, then from positive con-
tact
1
and the positive terminal of the donor
battery. Begin each time with the contacts on
your own vehicle rst.
A er removing the jump lead/charging cable,
#
close cover
2
of positive contact 1.
Further information can be obtained at a quali ed
specialist workshop.
R R eplacing t
eplacing the 12 V batt
he 12 V battery
ery
Observe the notes on the 12 V battery
#
(
page 333).
/
Mercedes-Benz recommends that you have the
12 V battery replaced at a quali ed specialist
workshop, e.g. at a Mercedes-Benz Service
Centre.
Observe the following notes if you want to replace
the battery yourself:
Always replace a faulty battery with a battery
R
which meets the speci c 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
only guaranteed with an AGM battery or lith-
ium-ion battery. For safety reasons, Mercedes-
Benz recommends that you only use batteries
which have been tested and approved for your
vehicle by Mercedes-Benz.
Carry over detachable parts, such as vent
R
hoses, elbow ttings or terminal covers from
the battery being replaced.
Make sure that the vent hose is always con-
R
nected to the original opening on the side of
the battery.
Fit any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape.
Make sure that detachable parts are recon-
R
nected in the same way.
T T o o w w -st -star arting or to
ting or towing away
wing away
Ov Over ervie
view of t
w of the per
he permitt
mitted to
ed towing met
wing methods
* N N O O TE TE Damage from automatic braking
If one of the following functions is switched
on, the vehicle brakes automatically in certain
situations:
Active Brake Assist
R
Active Distance Assist DISTRONIC
R
HOLD function
R
Active Parking Assist
R
To avoid damage to the vehicle, deactivate
these systems in the following or similar situa-
tions:
during towing
#
in a car wash
#
Mercedes-Benz recommends transporting your
vehicle in the case of a breakdown, rather than
towing it away.
For towing, use a tow rope or tow bar with both
axles on the ground. Do not use tow bar systems.
hods
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