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:
Displays in the instrument cluster
The transmission position is
displayed,
e.g.: P. ...
Switch off the engine during longer stops
Switch off the engine during longer stops, e.g.,
at traffic lights, railroad crossings or in traffic
congestion.
Fuel savings are achieved after the vehicle is
switched off for only approx. 4 s ...
Low tire pressure message
The yellow warning lamp lights up. A
Check Control message is displayed.
There is a flat tire or a major loss in
tire inflation pressure.
The system was not reset after a wheel
change ...