110
Do not use spray products sold as an
aid to starting.
If the car's own battery is flat, the
engine can be started by using two
jumper cables from another vehicle's
battery.
a
Touching electrically live compo-
nents while car's engine is running
can cause a potentially fatal acci-
dent.
c
Do not depart from the procedure
described below, or else personal
injury could result or one or both vehi-
cles be damaged.
1
Check that the other vehicle has a
12 Volt battery of approximately the
same capacity (65Amp/h). This
should be printed on the battery.
2
Do not disconnect the flat battery
from the car's electrical system.
3
The bodies of the two vehicles
must not touch, or a short circuit
could result.
4
First connect the positive terminal
of the other car's battery with one
of the jumper leads to the positive
pole in the BMW's engine com-
partment (this has a protective
cover which can be
removed by pulling the flap (BMW
850Ci, 850CSi) or by pulling the
two flaps at the side (BMW 840Ci -
see left picture, arrow 1).
Then connect up the batteries'
negative terminals. First attach the
jumper lead to the negative termi-
nal of the other vehicle's battery or
to the other car's engine or body
earth and then to the engine or
body earth (nut on spring strut
dome, see picture, arrow 2) of your
own car.
a
When connecting up jumper
leads, including when assisting other
vehicles, please work in the sequence
stated above in order to prevent
sparks occurring at the battery.
c
5
If the second vehicle's battery is
not well charged, run that vehicle's
engine. Start your own car's
engine in the usual way and leave
it running.
Before detaching the jumper
leads from your BMW, switch on
your car's lights, heated rear win-
dow and heater blower (at maxi-
mum speed) to ensure that the
voltage reaching the consumers
from the regulator is not too high.
Then disconnect the jumper leads
in the opposite order (negative
pole first, then positive pole).
Have the battery recharged (depend-
ing on the cause of the fault).
31
2de1
2
8
Starting with a flat battery
Online Edition for Part-No. 01 41 9 790 191 - © 12/98 BMW AG
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