The concept
The system does not measure the actual inflation pressure in the tires.
It detects a pressure loss in a tire by comparing the rotational speeds of the individual wheels while moving.
In the event of a pressure loss, the diameter and therefore the rotational speed of the corresponding wheel change. This is detected and reported as a flat tire.
See also:
For the 530i, 535i, 550i, 525d,
530d and 535d: check oil level
The concept
The oil level is monitored electronically and displayed
on the Control Display.
Requirements
▷ The engine must be running and warm after
the vehicle has been driven for at lea ...
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 ...
2009 BMW 535 Review by David Thomas
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