Jump-starting – BMW 2006 bmw 325i User Manual

Page 173

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Overview

Do not use spray starter fluids.

If the battery is discharged, the engine
can be started with the use of two
jumper cables and the battery of
another vehicle. Use only jumper cables
with fully insulated grips on the terminal
clamps.

Do not touch the parts conducting
electrical current while the engine

is running. Failure to comply with this
creates a risk of fatal injury.

Carefully comply with the following
instructions to avoid personal injury or
damage to one or both vehicles:

1 Be sure that the battery on the

support vehicle is also rated at
12 volts, and that the capacities of
the two batteries (Ah) are roughly
comparable (printed on casing)

2 Leave the discharged battery

connected to the vehicle's electrical
system

3 Make sure that there is no contact

between the bodywork of the two
vehicles – this creates a risk of short
circuits

4 Start by connecting the jumper cable

from the positive terminal of the
support vehicle to the positive
terminal connector located in your

BMW's engine compartment. The
cover of the positive terminal
connector is marked with a "+" sign.
Refer to the illustration. Remove by
pulling the tab (arrow 1)

5 Then connect the negative terminals.

Attach the cable to either the support
vehicle's negative battery terminal (–),
or to a suitable ground on its engine
or bodywork. Then connect the other
end of the cable to a ground on the
engine or on the bodywork of the
vehicle that is to be started. There is
a special nut provided for this on the
BMW (arrow 2)

462us053

Follow the same sequence for
connecting the jumper cables

when helping other vehicles. If you do
not, there is the risk of injury if sparks
are generated at the battery.

6 Start the engine of the support

vehicle and let it run

7 Start the engine on the vehicle

needing the jump-start, and allow it
to run 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 from your BMW, turn on the
lighting, the rear window defroster
and set the blower to the highest
speed; allow the engine to run
approx. 10 seconds. This will prevent
a voltage surge from the voltage
regulator to the electrical accessories

9 Then disconnect the jumper cables in

reverse sequence.

Depending on the cause of the fault,
recharge the battery.

Jump-starting