Self-help
When the engine is running, disconnect
the le
ads in r
everse 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 af-
ter about 1 minute.
WARNING
●
Please note the safety warnings referring
to working in the engine compartment
›››
page 319.
●
The battery 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
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
11.
terminal of the flat battery. The gas emitted
from the batt
ery 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 electricity could flow as soon as
the positive terminals are connected.
Tow start and towing
Introduction
Tow-starting me
ans 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 bat-
tery 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 vehi-
cles with the Keyless Access system, the
steering wheel could lock
›››
.
WARNING
A vehicle with no power should never be
towed.
●
During towing, never switch off the igni-
tion using the start button. Otherwise, the
electronic lock of the steering column
could suddenly become blocked and it
would be impossible to steer the vehicle.
This could cause an accident, serious injury
and loss of control of the vehicle.
»
53
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