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Mutual aid
202
Preparations
1. Check whether the battery of the other
vehicle has a voltage of 12 Volt and approx.
the same capacity in Amp/h. This should be
printed on the battery.
2. Switch off the engine of the donor vehicle.
3. Switch off all consumers in both vehicles.
The bodies of the two vehicles must not
make contact, otherwise there is the risk
of a short-circuit.<
Connecting the jump leads
Connect the jump leads in the correct
order, so that no sparks which could
cause injury occur at the battery.<
Your BMW has a jump-starting connection in
the engine compartment which acts as the bat-
tery's positive terminal, see also Engine com-
partment overview on page 186. The cap is
marked with +.
1. Fold open the cover on the BMW's jump-
starting connection by pulling the tab.
2. Connect a terminal clamp on the positive/+
lead to the battery's positive terminal or to a
jump-starting connection on the donor
vehicle.
3. Connect the other terminal clamp to the
battery's positive terminal or to a jump-
starting connection on the vehicle to be
started.
4. Connect a terminal clamp on the negative/–
lead to the battery's negative terminal or to
the engine or body earth connection on the
donor vehicle.
Your BMW has a special nut to act as the
body earth or negative terminal.
5. Connect the second terminal clamp to the
battery's negative terminal or to a ground/
earth connection on the engine or body of
the vehicle to be started.
Starting the engine
1. Start the engine of the donor vehicle and
allow it to run for a few minutes at a slightly
increased idle speed.
2. Start the engine of the other vehicle in the
customary way.
If an initial attempt to start the engine fails,
wait several minutes until the flat battery
has been recharged to a slightly greater
degree.
3. Allow the engines to run for a few minutes.
4. Disconnect the jump leads in the opposite
order from that in which they were originally
attached.
Check the battery if necessary and have it
recharged.
Do not use the spray products sold as
starting aids.<
Tow-starting, towing away
Using towing eye
The screw-in towing eye must always be car-
ried on the car. It can be screwed into the front
or rear end of the BMW.
Saloon:
It is stored in the toolkit in the luggage compart-
ment lid, see page 192.
Online Edition for Part-No. 01 41 0 159 725 © 09/05 BMW AG