Mercedes-Benz 2009 R-Class, Operator'S Manual

Page: 383 / 412

Jump starting
381
If the battery is discharged, the engine can be
started with jumper cables and the battery of
another vehicle. Observe the following:
R
Jump starting should only be performed
when the engine and catalytic converter
18
are cold.
R
Do not start the engine if the battery is
frozen. Let the battery thaw out first.
R
Only jump start from batteries with the
same voltage rating (12 V). Jump starting
with a more powerful battery could damage
the vehicle’s electrical system, which will
not be covered by the Mercedes-Benz
Limited Warranty.
R
Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.
R
Always make sure the jumper cables are
not on or near pulleys, fans or other parts
that move when an engine is started or
running.
The jump-start contacts are located in the
engine compartment on the passenger side.
1
Negative terminal
2
Positive terminal
3
Positive terminal cover
X
Make sure the two vehicles do not touch.
X
Switch off all electrical consumers.
X
Engage the parking brake.
X
Make sure the automatic transmission is in
park position
P.
X
Open the hood.
X
Flip up cover
3
of positive terminal
2
in
direction of arrow.
X
Remove cover from negative terminal
1
.
1
Negative terminal
2
Positive terminal
4
Positive terminal of charged battery
5
Negative terminal of charged battery
!
Never invert the terminal connections!
X
Connect positive terminal
4
of the
charged battery with positive terminal
2
with a jumper cable. Clamp the cable to
positive terminal
4
of the charged battery
first.
X
Start engine of the vehicle with the charged
battery and run at idle speed.
X
Connect negative terminal
5
of the
charged battery with negative terminal
1
with a jumper cable. Clamp the cable to
18 Vehicles with gasoline engine only.
Practical hints
Z