Tire Pressure Module: Description and Operation

Tire Pressure Monitoring Generation 2.5

Control unit







The TPM control unit with integrated antenna is fitted on the outside on the vehicle underbody. The control unit is water-tight. The underbody panelling serves as mechanical protection for the control unit. The location of the control unit on the outside of the vehicle ensures that wheel electronics reception is not subject to interference as a result of various conditions in the passenger or luggage compartment or due to metallized heat-insulating glass.







The control unit requests the four trigger transmitters to transmit in succession by means of a PWM signal. The 125 kHz signal is received by the respective wheel electronics units. The data protocol transmitted by the wheel electronics is received by the antenna integrated in the control unit.