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:

    Active head restraint
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    Checking the pressure
    Only check the tire inflation pressure when the tires are cold. This means after a maximum of 1.25 miles/2 km driving or when the vehicle has been parked for at least 2 hours. When the tires a ...

    Video playback
    Country codesOnly DVDs with the code of the home region can be played back; also refer to the information on your DVD.   Starting playbackFor your own safety, the video image is only displayed ...