BMW X7 - Page 409

NOTICE
In the case of body contact between the two
vehicles, a short circuit can occur during jump-
starting. There is a risk of damage to property,
among other potential damage. Make sure that
no body contact occurs.
Preparation
1. Check whether the battery of the other vehi‐
cle has a voltage of 12 volts. The voltage in‐
formation can be found on the battery.
2. Switch off the engine of the assisting vehicle.
3. Switch off any electrical components in both
vehicles.
Starting aid terminals
The starting aid terminal in the engine compart‐
ment acts as the positive battery terminal.
A special connection on the body in the engine
compartment acts as the negative battery termi‐
nal.
Additional information:
Overview of engine compartment, refer to
page 388.
Open the cover of the positive battery terminal.
Connecting the cables
Before you begin, switch off all unnecessary
electronic systems/components, such as the
radio, on the assisting and receiving vehicles.
1.
Open the cover of the starting aid terminal.
2. Attach one terminal clamp of the positive
jumper cable to the positive battery terminal,
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 battery terminal, 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 battery terminal,
or to the corresponding engine or body
ground of assisting vehicle.
5. Attach the second terminal clamp to the neg‐
ative battery terminal, 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 increased
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 successful,
wait a few minutes before making another at‐
tempt in order to allow the discharged battery
to recharge.
3. Let both engines run for several minutes.
4. Disconnect the jumper cables in the reverse
order.
Check the battery and recharge, if needed.
Tow-starting and towing
Safety information
Warning
Due to system limits, individual functions can
malfunction during tow-starting/towing with the
Intelligent Safety systems activated. There is a
risk of accident. Switch all Intelligent Safety
systems off prior to tow-starting/towing.
Seite 409
Breakdown Assistance
MOBILITY
409
Online Edition for Part no. 01405A385B6 - VI/21