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322 Breakdown assistance
Replacing the 12 V battery
Observe the notes on the 12 V battery
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(
page 316).
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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:
Always replace a faulty battery with a battery
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that meets the specific vehicle requirements.
The vehicle is equipped with a battery using
AGM (Absorbent Glass Mat) technology or a
lithium-ion battery. Full vehicle functionality is
guaranteed only with an AGM battery or lith-
ium-ion battery. For safety reasons, Mercedes-
Benz recommends that you use only batteries
that have been tested and approved for your
vehicle by Mercedes-Benz.
Carry over detachable parts, such as vent
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hoses, elbow fitting or terminal covers from
the battery being replaced.
Make sure that the vent hose is always con-
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nected to the original opening on the side of
the battery.
Install any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape.
Make sure that detachable parts are recon-
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nected in the same way.
Tow starting or towing away
Permitted towing methods
* NOTE Damage from automatic braking
If one of the following functions is activated,
the vehicle will brake automatically in certain
situations:
Active Brake Assist
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Active Distance Assist DISTRONIC
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HOLD function
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Active Parking Assist
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To avoid damage to the vehicle, switch off
these systems, e.g. when towing or using a car
wash.
Mercedes-Benz recommends transporting your
vehicle in the case of a breakdown, rather than
towing it away.
For towing with both axles on the ground, use a
tow rope or tow rod. Do not use tow bar systems.
* NOTE Damage to the vehicle due to tow-
ing away incorrectly
Observe the instructions and notes on
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towing away.
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