2018 Bluetooth LAUNCH TS971 TPMS Activation Tool is much better than any of TS401,TP200 or EL-50448 in the hardware and software. What is LAUNCH TS971? LAUNCH TS 971 is an activation and diagnostic tool for the TPMS system. It uses high/low radio frequency to activate and read tire pressure sensor information and uses the OBD interface to reset the TPMS modules. Operation is needed when tire sensors are replaced and i TPMS DTCs need to be cleared. TS971-01 ...