Mercedes-Benz S-Class Coupe 2018, Operator'S Manual

Page: 354 / 502

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During the starting assistance proce‐
dure: start the engine of the donor vehicle
and run at idle speed.
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Connect the negative pole of the donor bat‐
tery and ground point 5 of your own vehicle
by using the jumper/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.
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During starting assistance: let the engines
run for several minutes.
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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:
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First, remove the jumper/charging cable
from ground point 5 and negative pole of
the donor battery, then from positive clamp
4 and positive pole of the donor battery.
Begin each time with the contacts on your
own vehicle first.
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After removing the jumper/charging cable,
close cover 3 of positive clamp 4 .
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Vehicles with ground point cover: replace
ground point cover 1 and turn screws 2
clockwise.
You can obtain further information on starting
assistance at any qualified specialist workshop.
Replacing the 12 V battery
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Observe the notes on the 12 V battery
(
→
page 347).
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 defective battery with a bat‐
tery which meets the specific vehicle require‐
ments.
R
Carry over detachable parts, such as vent
hoses, elbow fitting or terminal covers from
the battery being replaced.
R
Make sure that the vent hose is always con‐
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.
R
Make sure that detachable parts are recon‐
nected in the same way.
Tow starting or towing away
Permitted towing methods
Mercedes-Benz recommends transporting your
vehicle in the case of a breakdown, rather than
towing it away.
*
NOTE Damage to the vehicle due to tow‐
ing away incorrectly
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Observe the instructions and notes on
towing away.
352 Breakdown assistance