Mercedes-Benz V-Class 2021 Owner's Manual page 250

Avoid numerous and extended attempts
#
to start the engine.
Do not use a rapid charging device to start the
vehicle. If your vehicle's battery is discharged,
the engine can be jump-started from another
vehicle or from a donor battery using jump leads.
For this purpose, the vehicle has a jump-start
connection point in the engine compartment.
When jump-starting, observe the following points:
The battery is not accessible in all vehicles. If
R
the other vehicle's battery is not accessible,
starting assistance is to be provided using a
donor battery or a starting assistance device.
You may only jump-start the vehicle when the
R
engine and exhaust system are cold.
Do not start the engine if the battery is fro‐
R
zen. Let the battery thaw first.
Starting assistance may only be provided
R
using batteries with a nominal voltage of 12 V.
Only use jump leads that have a sufficient
R
cross-section and insulated terminal clamps.
If the battery is fully discharged, attach the
R
donor battery for a few minutes before
attempting to start. This charges the dis‐
charged battery a little.
Make sure that the two vehicles do not touch.
R
Jump leads and further information regarding
starting assistance can be obtained at any quali‐
fied specialist workshop.
Ensure the following before connecting the jump
lead:
The jump leads are not damaged.
R
Parts of the terminal clamps which are not
R
insulated do not come into contact with other
metal parts while the jump leads are connec‐
ted to the battery.
The jump leads do not touch moving parts
R
when the engine is started and while it is run‐
ning, such as the V-belt pulley or the fan.
Apply the parking brake.
#
Vehicles with automatic transmission:
#
shift the transmission to position j.
Vehicles with manual transmission: shift
#
to neutral.
Switch off all electrical consumers, e.g. audio
#
device, blower.
Breakdown assistance 247
Switch off the ignition immediately and
#
remove the key.
Open the bonnet (
/
#
Connecting and disconnecting the jump lead
Example: jump-start connection point
Push contact protection cover
#
jump-start connection point towards the rear
of the vehicle against the spring pressure as
far as it will go.
The jump-start connection point is visible.
Terminal connection diagram
Remove the cover from positive terminal
#
of the donor battery.
Connect the positive terminal clamp of the
#
jump lead to positive terminal
donor battery, and then to positive terminal
5 of the jump-start connection point.
Connect the negative terminal clamp of the
#
jump lead to negative terminal
page 230).
1 of the
3
3 of the
2 of the