BMW 2007 550I Sedan - Manual (Page 248)

Giving and
receiv
ing
as
sistance
246
Jump starting
When your battery is discharged, you can use
two jumper cables to start your BMW with
power from the battery in a second vehicle. You
can also use the same method to help start
another vehicle. Use only jumper cables with
fully-insulated clamp handles.
To avoid the risk of potentially fatal injury,
always avoid all contact with electrical
components while the engine is running. Care-
fully adhere to the following sequence, both to
prevent damage to one or both vehicles, and to
guard against possible personal injuries.
<
Preparation
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 assisting vehi-
cle.
3. Switch off any electrical systems and com-
ponents in both vehicles.
There must not be any contact between
the bodies of the two vehicles, otherwise
there is a danger of shorting. <
Connecting jumper cables
To avoid personal injury from sparks, fol-
low this sequence when connecting
jumper cables. <
In your BMW, the so-called jump-starting termi-
nal in the engine compartment serves as a pos-
itive terminal for the battery, also refer to engine
compartment overview on page
229 . The cover
cap is marked with a +.
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 start-
ing-aid terminal of the vehicle to be started.
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 assisting
vehicle.
Your BMW has a special nut as body ground
or negative terminal.
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.
Online Edition for Part no. 01 41 0 013 308 02/07 BMW AG