CAUTION
It is important to ensure that the jack is correctly positioned against the bar of
the lower beam - otherwise there is a risk of damage to the vehicle.
Jump-starting
Introduction
This chapter contains information on the following subjects:
Jump-starting using the battery from another vehicle
WARNING
The following instructions must be followed at all times when working on
■
the engine compartment
» page
When handling the vehicle battery, the following warnings must be ob-
■
served
» page
84.
A discharged vehicle battery may already freeze at temperatures just be-
■
low 0 °C. If the battery is frozen, do not carry out a jump start with the bat-
tery of another vehicle – There is a risk of explosion and injury!
Never jump-start vehicle batteries with an electrolyte level that is too low
■
– There is a risk of an explosion and caustic burns!
Jump-starting using the battery from another vehicle
Fig. 86 Jump-starting: – flat battery, – battery providing current /
engine earthing point
94
Do-it-yourself
79.
Read and observe
If, because of a discharged battery, it is not possible to start the engine, the
battery of another vehicle can be used to start the engine. To do this, jump-
start cables are required which have a sufficiently large cross-section and in-
sulated terminal clamps.
The rated voltage of the two batteries must be 12 V. The capacity (Ah) of the
power-supplying battery must not be significantly lower than the capacity of
the discharged battery.
94
The jump-start cables must be attached in the following sequence.
›
Attach clamp
to the positive terminal of the discharged battery.
1
›
Attach clamp
to the positive terminal of the power-supplying battery.
2
›
Attach clamp
to the negative terminal of the power-supplying battery.
3
›
Attach the clamp
to the earthing point
4
firmly connected to the engine block or to the engine block itself.
Starting engine
›
Start the engine on the vehicle providing the power and allow it to idle.
›
Initiate the starting process in the vehicle with the discharged battery.
›
If the engine does not start within 10 s, then cancel the starting procedure
and repeat after half a minute.
›
Disconnect the jumper cables in reverse order to connecting.
WARNING
Never clamp the jump cable to the negative terminal of the discharged
■
battery - There is a risk of an explosion.
The non-insulated parts of the terminal clamps must never touch each
■
other – there is a risk of short circuit.
The jump-start cable connected to the positive terminal of the battery
■
must not come into contact with electrically conducting parts of the vehicle
– there is a risk of short circuit.
Position the jump cables so that they cannot be caught in rotating parts
■
in the engine compartment - There is a risk of injuries and the risk of vehi-
cle damage.
on page 94 first.
or to a solid metal component
A