For whatever reason, Toyota is one of the worst vehicles for TPMS. Usually the sensor ID must be written down and programmed into the cars computer with a high dollar scan tool. That's one thing Chrysler beat them at years ago with a self learning system, which should have been a requirement by all manufacturers. The TPMS law would have been a great idea if they had made it a simple system for ALL vehicles, with real time pressure readouts easily displayed, and programmed with a magnet like Chevy did clear back in 1997 on the Corvette. The newer vehicle using wheel speed to check for a low tire isn't bad either, since no sensor is even used. But, by the time you notice the light, that most people don't even know what it means, they have already crashed anyway.