See also:

Automatic deactivation during forward travel
The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...

Functional requirements
The system must have been initialized when the tire inflation pressure was correct; otherwise, reliable signaling of a flat tire is not ensured. Initialize the system after each correction of th ...

2011 BMW X3 Review by Mike Hanley
The BMW X3 may have been a pioneer among compact luxury crossovers, but a number of competitors — including the Audi Q5, Mercedes-Benz GLK-Class and Volvo XC60 — have entered the fray since its de ...