BMW 645Ci Coupe 2005 - Manual (Page 188)

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Preparing
1. Check whether the battery of the other
vehicle has a voltage of 12 Volts and
approximately the same capacitance in Ah.
This information can be found on the bat-
tery.
2. Switch off the engine of the vehicle provid-
ing assistance.
3. Switch off all electrical accessories in both
vehicles.
There must not be any contact between
the bodies of the two vehicles, as other-
wise there is a danger of shorting. <
Connecting jumper cables
To avoid personal injury from sparks,
observe this sequence when connecting
jumper cables. <
In your BMW, the so-called jump-starting termi-
nal in the engine compartment serves as the
battery positive terminal, also refer to engine
compartment essentials on page
175 . The
symbol + is embossed on the cover.
1. Fold open the cover of the BMW jump-
starting terminal. To do so, pull the tab.
2. Attach one end of the jumper cable plus/+
to the positive terminal of the battery or a
jump-starting terminal of the vehicle provid-
ing assistance.
3. Attach the second end of the cable to the
positive terminal of the battery or to a jump-
starting terminal of the vehicle to be started.
Your BMW has a special nut as body ground or
negative pole.
4. Attach one end of the jumper cable minus/–
to the negative terminal of the battery or to
an engine or body ground of the vehicle
providing assistance.
5. Attach the second end of the cable to the
negative terminal of the battery or to the
engine or body ground of the vehicle to be
started.
Starting engine
1. Start the engine on the assisting vehicle
and allow it to run for several minutes at
increased speed.
2. Start the engine on the other vehicle in the
usual way.
If the first start attempt is not successful,
wait a few minutes before another attempt
in order to allow the discharged battery to
recharge.
3. Let the engines run for a few minutes.
4. Disconnect the jumper cables by reversing
the connection sequence
If required, have the battery inspected and
recharged at your BMW center.
Never use spray fluids to start the
engine.
<
Online Edition for Part-No. 01 41 0 158 445 - © 09/04 BMW AG