Theory Of Operation
WARNING: This page is about a different car, the 2022 Chrysler Voyager and 2022 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
The Tire Pressure Monitoring (TPM) Sensor actively monitors the air pressure, air temperature inside the tire, and the internal battery status. Each sensor has a unique ID code. The TPM Sensor transmits the data at regular intervals via an encoded signal to a receiver circuit located in the Radio Frequency Hub Module (RF-Hub).
For vehicles equipped with a Remote Start system, the TPM signal is received by the Remote Start Antenna (RSA), then the RSA sends the signal to the RF-Hub.