The TS508WF displays on-tool MX-Sensor relearn procedures including OBDII and can do key fob signal tests. TS508WF TPMS programming tool can be likened to a signal transmitter. MaxiTPMS TS508WF. Comparing with TS501, TS508WF has added Quick & Advanced Modes for faster and smarter TPMS repairs, added Tire Type/Pressure Selection for added TPMS services.