BMW ActiveHybrid 3 Owner's Manual page 196

Mobility
Do not touch live parts
To avoid the risk of potentially fatal injury,
always avoid all contact with electrical compo‐
nents while the engine is running.◀
Preparation
1. Check whether the battery of the other ve‐
hicle has a voltage of 12 volts. This informa‐
tion 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 engine
compartment acts as the battery's positive ter‐
minal.
Open the cover of the starting aid terminal.
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Breakdown assistance
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The body ground or a special nut acts as the
battery negative terminal.
Connecting the cables
Be careful not to swap over the positive
and negative connector terminals
Do not swap over the positive and negative ter‐
minals of the connectors, otherwise there is a
danger that components of the hybrid system or
the vehicle electronics may be irreparably dam‐
aged.
Take note of the label next to the positive ter‐
minal.◀
Before you begin, switch off all unnecessary
electronic systems/power consumers, such as
the radio, on the assisting and receiving vehi‐
cles.
1. Open the cover 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 assistance.
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