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Self-help
Start the engine of the vehicle with the
fl
at battery and wait for 2 or 3 minutes
until the engine is running.
Removing the jump leads
Before you remove the jump leads,
switch off the dipped beam headlights if
they are switched on.
Turn on the heater blower and heated
rear window in the vehicle with the flat
battery. This helps minimise voltage
peaks which are generated when the
leads are disconnected.
When the engine is running, disconnect
the leads in reverse order to the details
given above.
Make sure the battery clamps have sufficient
metal-to-metal contact with the battery ter-
minals.
If the engine fails to start after about 10 sec-
onds, switch off the starter and try again after
about 1 minute.
WARNING
●
Pl
ease note the safety warnings referring
to working in the engine compartment
›››
page 318.
●
The battery providing assistance must
have the same voltage as the flat battery
(12V) and approximately the same capaci-
8.
9.
10.
11.
ty (see imprint on battery). Failure to com-
ply coul
d result in an explosion.
●
Never use jump leads when one of the
batteries is frozen. Danger of explosion!
Even after 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 ciga-
rettes away from batteries, danger of ex-
plosion. Failure to comply could result in an
explosion.
●
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 emit-
ted from the battery could be ignited by
sparks. Danger of explosion.
●
Never attach the negative cable to fuel
system components or the brake lines in
the other vehicle.
●
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
vehicle, 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
result in chemical burns.
Note
The vehicles must not touch each other,
otherwise el
ectricity could flow as soon as
the positive terminals are connected.
Tow start and towing
Intr
oduction
Tow-starting means st
arting the engine of
the vehicle while another pulls it.
Towing means one vehicle pulling another
that is not roadworthy.
Always consider the legal provisions relating
to tow-starting and towing.
For technical reasons, towing a vehicle
with a discharged battery is not allowed.
The jump start should be used instead
›››
page 51.
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 the
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53
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