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Emergencies
Starting
7. Start the engine of the vehicle with the
boosting battery and let it run at idling
speed.
8. Start the engine of the vehicle with the flat
battery and wait 2 or 3 minutes until the
engine is “running”.
Removing the jump leads
9. Before you remove the jump leads, switch
off the dipped beam headlights (if they
are switched on).
10.
Turn on the heater blower and heated rear
w
indo
w in the vehicle with the flat battery.
This helps minimise voltage peaks which
are generated when the leads are discon-
nected.
11.When the engine is running, disconnect
the leads in reverse order to the details
given above.
Connect the battery clamps so they have
good metal-to-metal contact with the battery
terminals.
If the engine fails to start, switch off the start-
er after about 10 seconds and try again after
about 1 minute.
WARNING
●
Please note the safety warnings referring to
working in the engine compartment
››› page 214.
●
The batt
ery providing assistance must have
the same voltage as the flat battery (12V) and
approximately the same capacity (see imprint
on battery). Failure to comply could result in
an explosion.
●
Never use jump leads when one of the bat-
teries is frozen. Danger of explosion! Even af-
ter the battery has thawed, battery acid could
leak and cause chemical burns. If a battery
freezes, it should be replaced.
●
Keep sparks, flames and lighted cigarettes
away from batteries, danger of explosion.
Failure to comply could result in an explo-
sion.
●
Observe the instructions provided by the
manufacturer of the jump leads.
●
Do not connect the negative cable from the
other vehicle directly to the negative terminal
of the flat battery. The gas emitted from the
battery could be ignited by sparks. Danger of
explosion.
●
Do not attach the negative cable from the
other vehicle to parts of the fuel system or to
the brake line.
●
The non-insulated parts of the battery
clamps must not be allowed to touch. The
jump lead attached to the positive battery
terminal must not touch metal parts of the ve-
hicle, this can cause a short circuit.
●
Position the leads in such a way that they
cannot come into contact with any moving
parts in the engine compartment.
●
Do not lean on the batteries. This could re-
sult in chemical burns.
Note
The vehicles must not touch each other, oth-
erwise electricity could flow as soon as the
positive terminals are connected.
Towing and tow starting
Introduction
When towing, always respect legal require-
ments.
For technical reasons, it is not possible to
tow a vehicle if the battery is flat.
If the vehicle comes with the Keyless Access
system, towing is only allowed with the igni-
tion on!
The vehicle battery drains if the vehicle is
towed with the engine switched off and the
ignition connected. Depending on the battery
charge status, the drop in voltage may be so
large, even after just a few minutes, that no
electrical device in the vehicle may work e.g.
the hazard warning lights. In vehicles with
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255
Technical specifications
AdviceOperationSafety
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