BMW X3 2013 Owner's Manual page 188

Mobility
Preparation
1. Check whether the battery of the other ve‐
hicle has a voltage of 12 volts. This infor‐
mation can be found on the battery.
2. Switch off the engine of the assisting vehi‐
cle.
3. Switch off any electronic systems/power
consumers in both vehicles.
Bodywork contact between vehicles
Make sure that there is no contact be‐
tween the bodywork of the two vehicles; other‐
wise, there is the danger of short circuits.◀
Starting aid terminals
Connecting order
Connect the jumper cables in the correct
order; otherwise, there is the danger of injury
from sparking.◀
The so-called starting aid terminal in the en‐
gine compartment acts as the battery's posi‐
tive terminal.
The body ground or a special nut acts as the
battery negative terminal.
184
Breakdown assistance
Online Edition for Part no. 01 40 2 926 047 - XI/13
Online Edition for Part no. 01 40 2 911 041 - VI/13
Connecting the cables
1. Pull off the cap of the BMW starting aid ter‐
minal.
2. Attach one terminal clamp of the positive
jumper cable to the positive terminal of the
battery, or to the corresponding starting
aid terminal of the vehicle providing assis‐
tance.
3. Attach the terminal clamp on the other end
of the cable to the positive terminal of the
battery, or to the corresponding starting
aid terminal of the vehicle to be started.
4. Attach one terminal clamp of the negative
jumper cable to the negative terminal of
the battery, or to the corresponding engine
or body ground of assisting vehicle.
5. Attach the second terminal clamp to the
negative terminal of the battery, or to the
corresponding engine or body ground of
the vehicle to be started.
Starting the engine
Never use spray fluids to start the engine.
1. Start the engine of the assisting vehicle
and let it run for several minutes at an in‐
creased idle speed.
2. Start the engine of the vehicle being
started in the usual way.
If the first starting attempt is not success‐
ful, wait a few minutes before making an‐
other attempt in order to allow the dis‐
charged battery to recharge.
3. Let both engines run for several minutes.
4. Disconnect the jumper cables in the re‐
verse order.
Check the battery and recharge if necessary.