Mercedes-Benz G-Class Owner's Manual page 166

Jump-starting
164
Particularly avoid fire, naked flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over a battery.
!
Avoid repeated and lengthy starting
attempts. Only use the jump-starting pro-
cedure for the battery in the engine com-
partment.
Do not use a rapid-charging device to start
the engine.
If starting the engine with the emergency
start facility is no longer possible, a jump-
start can be achieved by attaching the jump
leads to the jump-starting terminals.
Jump-starting is also possible from:
another vehicle
R
an external battery
R
If the vehicle is equipped with a jump-starting
socket, it is also possible for another vehicle
with a jump-starting socket and a special
jump lead to jump-start your vehicle.
Observe the following points:
X
You may only jump-start the vehicle when
the engine and catalytic converter are cold.
X
Do not start the engine if the battery is fro-
zen. Let the battery thaw first.
X
12 V on-board electrical system: jump-
starting may only be performed from bat-
teries with a nominal voltage of 12 V.
X
24 V on-board electrical system: jump-
starting may only be performed from bat-
teries with a nominal voltage of 24 V.
X
Only use jump leads that have a sufficient
cross-section and insulated terminal
clamps.
X
Make sure that the jump leads cannot
come into contact with parts, such as the
pulley or the fan. These parts move when
the engine is started and while it is running.
X
If the battery is fully discharged, leave the
battery that is being used to jump-start
connected for a few minutes before
attempting to start. This charges the empty
battery a little.
i Jump-starting cables and further informa-
tion regarding jump starting can be
obtained at any qualified specialist work-
shop.
X
Make sure that the two vehicles do not
touch.
X
Apply the parking brake.
X
Move the selector lever to P.
X
Switch off all electrical consumers (e.g.
radio, blower, etc.).
X
Y
Open the bonnet (
Jump-starting using the jump-starting
terminals
The jump-starting terminals are on the right-
hand side in the engine compartment when
viewed in the direction of travel.
Example: 24 V battery
X
Remove the cover from positive termi-
nal ? on your vehicle.
X
Connect positive terminal ? on your vehi-
cle to the positive terminal of the donor
battery using jump lead :, beginning with
your own battery.
X
Start the engine of the donor vehicle and
run it at idling speed.
X
Connect negative terminal = on your vehi-
cle to the negative terminal of the donor
battery using jump lead ;, connecting the
jump lead to the donor battery first.
page 140).