Mercedes-Benz C-Class Saloon 2022 Owner's Manual page 413

410 Breakdown assistance
Switch off the vehicle and all electrical con-
#
sumers.
Open the bonnet.
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Example illustrations
Open cover 1 of the jump-starting connec-
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tion points.
2
Open cover of positive contact
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jump-starting connection points.
Starting assistance
Connect positive contact 3
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to the positive terminal of the donor battery
using the jump lead. Always begin with posi-
tive contact 3 on your own vehicle first.
Start the engine of the donor vehicle and run
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it at idling speed.
Connect the negative terminal of the donor
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battery to earth point
the jump lead. Begin with the donor battery
first.
Start the engine of your own vehicle.
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Let the engines run for several minutes.
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Before disconnecting the jump leads, switch
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on an electrical consumer in your own vehicle,
e.g. the rear window heater or the lighting.
When the starting assistance procedure is com-
plete:
First, remove the jump leads from earth point
#
3
of the
4
and the negative terminal of the donor bat-
tery, then from positive contact
positive terminal of the donor battery. Begin
each time with the contacts on your own vehi-
on your vehicle
cle first.
After removing the jump leads, close cover
#
of positive contact 3.
Close cover 1.
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4 of your vehicle using
3 and the
2