See also:

The concept
The vehicle alarm system responds to: Opening of a door, the hood or the trunk lid. Movements in the vehicle: interior motion sensor. Changes in the vehicle tilt, e.g., during attempts t ...

Wheels with electronics for TPM Tire Pressure Monitor
When mounting new tires or changing from summer to winter tires or vice versa, only use wheels with TPM electronics; otherwise, the Tire Pressure Monitor will not be able to detect a flat tire ...

Flat Tire Monitor FTM
The conceptThe system does not measure the actual inflation pressure in the tires. The system detects a pressure loss in a tire by comparing the rotational speeds of the individual wheels while mov ...