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:

    Operational readiness of airbag system
    Operational readiness of airbag system In the radio ready state and beyond the warning lamp comes on briefly to indicate that the entire airbag system and the belt tensioners are operational. ...

    Configuring the prewarning
    After the warning function is switched on, the following can be set via the iDrive: ▷ The prewarning can be switched on/off. ▷ The time of the prewarning can be set. These settings ha ...

    General information
    Overloading the vehicle To avoid exceeding the approved carrying capacity of the tires, never overload the vehicle. Overloading can lead to overheating and increases the rate at which damage de ...