If this fixed TPMS sensor ID unit is used to replace a Chrysler Crossfire sensor it will be NECESSARY to also use Chrysler Dealership diagnostic tool DRB III with a Crossfire-Sprinter Multiplexer cable and the Crossfire software card to get the vehicle into TPMS sensor relearn mode. Cloning previous sensor IDs into Schrader EZ-Sensors is the only way to avoid this.