Jump-starting
Introduction
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
282.
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 – risk of explosion!
Never jump-start vehicle batteries with an acid level that is too low – risk
■
of explosion and caustic burns!
Jump-starting using the battery from another vehicle
Fig. 340 Jump-starting: - discharged battery, - power-supplying
battery/ground point of the engine for the START-STOP system
Read and observe
on page 296 first.
If it is not possible to start the engine due to a discharged vehicle battery, the
battery of another vehicle can be used to start the engine. Only use jump-start
cables which have an adequately large cross-section and insulated terminal
clamps.
The rated voltage of the two batteries must be 12V. The capacity (Ah) of the
current-giving battery must not be significantly less than the capacity of the
discharged battery in your vehicle.
296
Do-it-yourself
276.
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 current-giving battery.
2
›
Attach clamp
to the negative terminal of the current-giving battery.
3
›
For vehicles with the START-STOP system, secure the clamp
ground point of the engine
» Fig.
A
›
For vehicles without the START-STOP system, secure the clamp
id metal part that is firmly attached to the engine block or secure to the en-
gine block directly.
Starting engine
›
Start the engine on the vehicle providing the power and allow it to idle.
›
Start the engine 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.
›
Remove the jump start cables in the reverse order as attachment.
WARNING
Never clamp the jump-start cable to the negative terminal of the dis-
■
charged battery - danger of explosion.
The non-insulated parts of the terminal clamps must never touch each
■
other – 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 vehi-
cle – risk of short circuit!
Route the jumper cables so that they cannot be caught in rotating parts in
■
the engine compartment - danger of injuries and the risk of vehicle dam-
age.
to the
4
340.
4
to a sol-