Mercedes-Benz GLC Series Operator's Manual page 308

306 Breakdown assistance
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
Vehicles with a gasoline engine: Jump
R
start the vehicle only when the engine and
exhaust system are cold.
Starting assistance and charging the 12 V
battery
Requirements:
The vehicle is secured with the electric park‐
R
ing brake.
Vehicles with automatic transmission:
R
The transmission is in position j.
The ignition and all electrical consumers are
R
switched off.
The hood is open.
R
Example: engine compartment
Slide cover 1 of positive clamp
#
jump-starting connection point in the direc‐
tion of the arrow.
Connect positive clamp 2 on your vehicle to
#
the positive pole of the donor battery using
the jumper cable/charging cable. Always
begin with positive clamp
vehicle first.
During starting assistance: start the
#
engine of the donor vehicle and run at idle
speed.
Connect the negative pole of the donor bat‐
#
tery and ground point
by using the jumper cable/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.
During starting assistance: let the engines
#
run for several minutes.
During starting assistance: before discon‐
#
2 on the
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, perform the following steps:
2 on your own
3 of your own vehicle