Connecting Jumper Cables; Jump Starting - BMW X3 2005 Owner's Manual

First-aid kit*
Beneath the front passenger's seat.
To open: pull the handle and fold the cover
downward.
To close: fold the cover up.
Some of the articles in the first-aid kit may
be used within a limited time only. There-
fore, check the expiration dates of the contents
regularly and replace the contents in a timely
fashion as needed. You can find replacements
in any pharmacy. Always observe all legal regu-
lations requiring a first-aid kit to be carried in the
vehicle.<

Jump starting

When your battery is discharged, you can use
two jumper cables to start your vehicle 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 observe the following instructions to avoid
personal injury and/or damage to one or both
vehicles.<
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.
104
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2. Switch off the engine of the vehicle provid-
ing assistance.
3. Switch off any electrical systems and com-
ponents in both vehicles.
Ensure that no contact exists between
the bodywork on the two vehicles, other-
wise there is a danger of short

Connecting jumper cables

To avoid personal injury from sparks,
always follow this sequence when con-
necting jumper cables.<
On your BMW, the auxiliary terminal for jump
starting in the engine compartment serves as
the battery positive terminal, refer also to
engine compartment overview on page 89.
The symbol + is embossed on the cover.
1. Open the cover of the BMW auxiliary termi-
nal for jump starting, refer to arrow 1.
2. Connect one terminal clamp of the posi-
tive/+ jumper cable to the positive terminal
of the battery or an auxiliary terminal of the
vehicle providing starting assistance.
3. Connect the second terminal clamp of the
positive/+ jumper cable to the positive ter-
minal of the battery or to an auxiliary termi-
nal of the vehicle to be started.
Your BMW has a special nut that serves as the
body ground or negative terminal, refer to
arrow 2.
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.
circuits.<