"...activate the sensor. It is important therefore to have access to a Bartec Wheelrite TECH400 tool which is able to diagnose Subaru TPMS issues and also has an extra interface to the vehicle OBDII/CANbus to communicate with the vehicle Engine Control Unit (ECU) and download the TPMS data. The..."
Above comes from a website I got to when earching for TPMS programming. Looks like the TPM-sensor ID's are stored in ECU. Anyone know anything about this?