I was told that you can run a strong magnet around the valve stem and this will make the light go out. I tried it on my 04 and indeed the warning light went out. Not sure if this did not screw something up, but the light has not come on since. I check my tires for correct pressure with a gage at least every month and they don't leak. I think the car dealers have a computer for resetting them, but the magnet is free