On-demand control of ancillary units saves energy
Intelligent energy management in the new BMW 3-Series is further enhanced by the ancillary units, which consume significantly less energy compared with conventional systems. Examples include the on-demand coolant pump, the electronically controlled oil pump and the electromechanical steering system, which only consumes electric power when steering assistance is actually required. The special air conditioning compressor featured on many of the sports sedan models works on the same principle. As soon as the driver switches the air conditioning off, the belt drive to the compressor is disconnected by a magnetic clutch, to minimise power drain.
See also:
Using the door lock
General information
Locking from the outside
Do not lock the vehicle from the outside if
there are people in it, as the vehicle cannot be
unlocked from inside without special knowledge.◄
...
Controls
1 Change the entertainment source
2 CD/DVD drive
3 Eject CD/DVD
4 Change station/track
5 Programmable memory buttons
6 Volume, on/off ...
Removing: Electrical* head restraints
Note
Do not remove the rear head restraints.
To avoid damage, they can only be installed by
your service center.
Removing
Only remove the head restraint if no one will be
sitting in the seat ...