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:

    Switching on automatically
    Select transmission position R with the engine running. ...

    Visual warning
    The approach of the vehicle to an object can be shown on the Control Display. When the distance to an object is small, a red bar is shown in front of the vehicle, as it is in the PDC display. ...

    Overview, instrument cluster
    Overview, instrument cluster 1 Messages, e.g. Check Control     Time     Date     External temperature     Selection lists  & ...