TIRE PRESSURE MONITORING SYSTEM HAVING A TEST FUNCTION FOR THE SENSOR MODULE

A device is described for detecting and wirelessly transmitting at least one measurement signal of the state of a vehicle tire of a vehicle (e.g., tire pressure and/or tire air temperature), which has at least one sensor module arranged in/on the vehicle tire and at least one sensor for detecting the measurement signal, and an energy store which supplies the sensor module with electrical energy, the sensor module having an apparatus for checking the functional capability of the sensor module, having at least one test routine and activating arrangement to activate the test routine, which includes: an apparatus which activates the start of the test routine as a function of the field strength of a magnetic field acting in the area of the sensor module, and/or an apparatus which has an electric circuit and which activates the start of the test routine as a function of a current flowing through the electric circuit, and/or c) an apparatus having an acceleration sensor which activates the start of the test routine as a function of the acceleration acting on the sensor module.