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200n
Never 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. Always use jumper
cables with fully insulated handles on
the terminal clamps.
Do not touch high-voltage wiring
and cables on a running engine.
There is a risk of fatal injury if you do
this.<
Carefully comply with the following in-
structions to avoid personal injury and
damage to one or both vehicles:
1 Ensure that the battery on the sup-
port 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 electrical
system.
3 Make sure that there is no contact
between the bodywork of the two
vehicles – short circuit risk.
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 auxiliary terminal for
jump starting is marked with a "+"
sign (refer to the illustration). Pull up
to open the cover. The illustration
shows the external positive terminal
connector of the BMW 540i. For the
BMW 525i, BMW 530i refer to
"Engine compartment" on page 160.
390de648
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 body of the vehicle which is
to be started. There is a special nut
on the strut dome of your BMW; refer
to the arrow in the illustration.
Follow the same sequence for
connecting the jumper cables if
you assist in jump-starting another ve-
hicle. If you do not, there is a risk of in-
jury caused by spark generation at the
battery.<
390de146
Jump-starting
Online Edition for Part No. 01 41 0 155 420 - © 01/01 BMW Group
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