TPMS sensors on different vehicles can be painful, it's good to keep in mind that each of these sensors often have a battery and those batteries can run out. If you pop down your local, good, tyre/tire shop they should have the appropriate testing equipment to determine which sensor is causing problems. Again if a sensor is replaced, it needs to be the exact specification for the vehicle, replacing with any TMPS sensor will not work - the vehicle will fail to see the sensor and the light will remain on. It sounds like you might have this issue. It's worth getting the tyres/tires checked by a competent garage.
disclaimer were based in the UK, hence tyre :-) and unfortunately can't help with a competent garage