This problem has been reoccurring for about two years now. I've had the Toyota dealership reset the Tire Pressure gauge several times, and finally paid for them to replace the sensor. Only to have it come back on the first "bump" my car hit...again.

The indicator light for the tire pressure has come on constantly since I bought the car. No matter if I just checked the pressure on all four tires, got new tires and even checked the pressure of the tire on the back of the car, it still doesn't stay off. It will go off for a day or two, and then it's on again, glowing brightly. I've asked at least five different places about it, and I've given up. The only thing I did hear was the spare tire has to be at fifty-some pounds.