Tire Pressure Monitor Antenna: Description and Operation

4438 - RDK Digital Antennas







The tire pressure monitoring system includes 4 antennas which are installed inside the wheel housings behind the wheel arches. The antennas receive the radio signals from the wheel transmitters and process them in an internal electronics unit. The data is transferred to the RDK control module for further processing via normal cable LIN - bus (Local Interconnect Network).

The antennas receive all radio signals entering their reception and frequency area, i.e. each antenna also receives the radio signals of all wheel sensors within range. The radio signals are filtered and selected inside the control module in order to ensure that the correct data is processed. The digital antennas have an integrated self-diagnosis facility. This means that when a fault is identified, it is stored in the fault memory and displayed on the PIWIS Tester.