Mercedes-Benz S-Class Saloon 2021 Owner's Manual page 441

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438 Breakdown assistance
438
Observe the additional following points when
charging the battery:
Only use battery chargers tested and
R
approved for Mercedes-Benz.
Read the battery charger's operating instruc-
R
tions before charging the battery.
Observe the additional following points during
starting assistance:
Starting assistance may only be provided
R
using vehicles, batteries or other jump start
devices with a nominal voltage of 12 V.
The vehicles must not touch.
R
V V ehicles wit
ehicles with a pe
h a petr trol engine:
ol engine: jump-start the
R
vehicle only when the engine and exhaust sys-
tem are cold.
S S t t ar arting assist
ting assistance and c
ance and char
harging t
ging the 12 V batt
Pr Prepar
eparing f
ing for st
or star arting assist
ting assistance/t
ance/the c
pr process
ocess
Secure the vehicle by applying the electric
#
parking brake.
Shi the transmission to position j.
#
Switch o the vehicle and all electrical con-
#
sumers.
Open the bonnet.
#
he 12 V battery
ery
he char
harging
ging
Open cover 1.
#
Slide protective cover
#
3
on the jump-start connection point in the
direction of the arrow.
S S t t ar arting assist
#
#
2
of POSITIVE contact
#
ting assistance
ance
Connect the POSITIVE contacts of the vehi-
cles with the jump lead. Start with your own
vehicle rst.
Start the engine of the donor vehicle and run
it at idling speed.
Connect the negative terminal of the donor
battery to earth point of your vehicle
4
using

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S class 2021

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