Mercedes-Benz C 300 2021, Operator'S Manual

Page: 348 / 502

Further information can be obtained at a quali‐
fied specialist workshop.
Charging
#
Connect positive contact 3 of the vehicle to
the positive terminal of the charger using the
charging cable. Always begin with positive
contact 3 of the vehicle.
#
Connect the negative terminal of the charger
and ground point 4 on the vehicle with the
charging cable. Start with the charger.
#
Start the charging process.
When the charging process is complete:
#
First, remove the charging cable from ground
point 4 and the negative terminal of the
charger, then from positive contact 3 and
the positive terminal of the charger. Begin
each time with the contacts of the vehicle.
#
After removing the charging cable, close
cover 2 of positive contact 3 .
#
Close cover 1 .
Further information can be obtained at a quali‐
fied specialist workshop.
Replacing the 12 V battery
#
Observe the notes on the 12 V battery
(
/
page 341).
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 faulty battery with a battery
which meets the specific 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.
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
*
NOTE Damage from automatic braking
If one of the following functions is switched
on, the vehicle brakes automatically in cer‐
tain situations:
R
Active Brake Assist
R
Active Distance Assist DISTRONIC
R
HOLD function
R
Active Parking Assist
346 Breakdown assistance