BMW 325XI Manuel D’Utilisation

147

When your battery is discharged you 
can use two jumper cables to start your 
vehicle with power from the battery in a 
second vehicle. You can also use the 
same method to help start another 
vehicle. Only use jumper cables with 
fully insulated handles on the terminal 
clamps.

Do not touch high-voltage wiring 
and cables on a running engine. 

Contact with components carrying high 
voltage can be harmful or fatal. Care-
fully observe the following instructions 
to avoid personal injury and/or damage 
to one or both vehicles.

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1. The battery in the support vehicle 

must also be rated at 12 volts. This 
information is provided on the battery 
label

2. Stop the engine of the support vehi-

cle and switch off all electrical com-
ponents in both vehicles – except for 
the hazard warning flashers of the 
support vehicle

3. Make absolutely certain that there is 

no contact between the bodywork of 
the two vehicles – short circuit haz-
ard

4. The auxiliary jump-starting terminal 

located in your BMW's engine com-
partment acts as the positive battery 
terminal. The cover of this auxiliary 
terminal is marked with a + sign. 
Remove by pulling the tab – see 
arrow 1.
Start by connecting the jumper cable 
from the positive terminal of the dis-
charged battery to the positive termi-
nal of the support battery

5. Then connect the negative terminals 

with the other jumper cable. First 
connect one end to the negative bat-
tery terminal or to a suitable grand on 

the support vehicle. Then connect 
the other end to the negative battery 
terminal or a suitable ground on the 
vehicle being started.
Your BMW is equipped with a special 
nut for this purpose – see arrow 2

Always adhere to this sequence 
when connecting jumper cables; 

failure to observe this procedure can 
lead to sparks at the battery terminals 
and pose an injury hazard.

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6. Start the engine of the support vehi-

cle and let it run for several minutes 
at a slightly elevated engine idle 
speed

7. Start the engine of the other vehicle 

as usual. If the first start attempt is 
not successful, wait a few minutes 
before another attempt in order to 
allow the discharged battery to 
recharge

8. Before disconnecting the jumper 

cables, let the engines run for a few 
minutes

9. Then disconnect the jumper cables 

in reverse sequence.

Depending on the cause of the fault, 
have the battery checked and 
recharged by your BMW center.

Online Edition for Part-No. 01 41 0 156 804 - © 09/02 BMW AG