Battery – BMW ActiveHybrid 750Li 2011 User Manual
Page 241
Removing
1.
Attach the adapter to the wheel lug.
2.
Unscrew the lug bolt.
Remove the adapter after screwing the lug bolt
back on.
Battery
Note
Your vehicle's hybrid system is equipped with a
12 volt battery and a high-voltage battery. The
12 volt battery supplies the electricity to the ve‐
hicle electrical system. The high-voltage battery
supplies the electric motor.
Since the electric motor starts the combustion
engine, it is not possible to drive the vehicle
when the high-voltage battery is discharged.
Starting aid, refer to page 244,
the connections of the starting aid terminals.
Maintenance and repairs
Have maintenance and repair work per‐
formed only by a service center or a workshop
that works according to BMW specifications
with appropriately trained personnel. Other‐
wise, there is the risk of fatal injury from electric
shock due to the hybrid system's high volt‐
age.◀
Determining faulty batteries
▷
Discharged 12 volt battery: the ignition can‐
not be switched on.
▷
Discharged high voltage battery: the ignition
can be switched on. The combustion engine
cannot be started.
Starting aid is available via the starting aid ter‐
minal.
High-voltage battery
Maintenance
High-voltage battery maintenance
Have the maintenance of the high-voltage
battery performed only by a qualified workshop
that works according to BMW specifications
with appropriately trained personnel.◀
Have maintenance performed in the following
situations. Corresponding Check Control mes‐
sages will be displayed on the instrument panel
and the Control Display.
▷
The high-voltage battery has reached the
end of its service life due to a defect.
▷
The high-voltage battery has only limited
power available.
▷
The high-voltage battery's maximum state
of charge drops below a certain value.
Replacement
The high-voltage battery's function is geared
towards your vehicle's service life.
However, a defect in the high-voltage battery
can make a replacement necessary.
A Check Control message in the instrument
panel indicates that the high-voltage battery
must be replaced:
High-voltage battery replacement
Have the high-voltage battery replaced
only by a qualified workshop that works accord‐
ing to BMW specifications with appropriately
trained personnel.◀
Discharge of the high-voltage battery
Long vehicle immobilization periods can cause
the discharge of the high-voltage battery. Fol‐
low the notes on laying up the car out of use if
the vehicle is to be parked for a longer period of
time.
Jump starting
The vehicle can be started via the connections
of the
starting aid, refer to page 244
.
12 volt battery
Maintenance
Your service center will be glad to advise you on
questions regarding the battery.
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