The Snap-on TPMS3 covers most passenger cars and light trucks with the ability to input the specific vehicle make, model and year to ensure proper signaling and detection. The TPMS3 triggers TPM sensors on the vehicle and verifies their proper operation. The TPMS3 also aids in relearning TPM systems. The sensor trigger feature is incorporated within the relearn procedures, allowing the user to quickly reset the TPM system. The TPMS3 has an OBDII connector which provides the ability to write the sensor IDs to the ECU on Asian vehicles.