PreparationBodywork contact between vehicles
Make sure that there is no contact be‐
tween the bodywork of the two vehicles; other‐
wise, there is a danger of short circuits.◀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.
Starting aid terminals
Connecting order
Connect the jumper cables in the correct
order to prevent risk of injury from arcing.◀
The so-called starting aid terminal in the en‐
gine compartment acts as the battery's posi‐
tive terminal.
Open the cover of the starting aid terminal.
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
terminals of the connectors, otherwise there is
a danger that components of the hybrid sys‐
tem or the vehicle's electronics may be irrepar‐
ably damaged.
Take note of the label next to the positive ter‐
minal.◀
Before you begin, reel off all unnecessary elec‐
tronic systems/power consumers, such as the
radio, on the assisting and receiving vehicles.1.Open the cover of the BMW starting aid
terminal.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 that is to be
started in the usual way.
If the first starting attempt is not success‐
ful, wait a few minutes before making an‐Seite 224MobilityBreakdown assistance224
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