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:
Engine oil temperature
Cold engine: the pointer is at
the low temperature end.
Drive at moderate engine and
vehicle speeds.
Normal operating temperature:
the pointer is in the middle
or in the left hal ...
Roadside Assistance
At a glance
BMW Roadside Assistance can be contacted if
assistance is needed in the event of a breakdown.
Roadside Assistance can also be contacted via
a Check Control message.
Start Roadside A ...
The concept
The vehicle alarm system responds to:
Opening of a door, the hood or the trunk lid.
Movements in the vehicle: interior motion
sensor.
Changes in the vehicle tilt, e.g., during attempts
t ...
