I seem to recall this question coming up a year or so ago and one conclusion was that the sensors in the car are actually transceivers; they send a signal to the monitor in the tire and it's able to generate a response using the energy of the received signal. Of course, the other theory is that there is indeed a battery and it will die in 7 to 10 years. :Christian said:Not sure how they get power, couldn't see any way to change a battery when I looked at them.
Yeahhhh, you and John :lol: .psiclne said:hahaha hey dallace - this makes it look like im the one bringing the 2yr old threads back......