Originally Posted by semtex

Don't bother, it isn't there. Trust me, I looked and looked, started cursing, and looked some more to no avail. The TPMS is good for one thing only -- warning you if the pressure is low. Want to make sure the pressures in all your tires are even? You'll need to get out of the car and use a pressure gauge. Of course, if you accidentally let out a bunch of nitrogen and need a fill, you'll have to take it back to the dealership or some other place with nitrogen. What a pain in the @ss. I don't suppose anyone makes a home-friendly nitrogen filling machine, do they? I have a portable air compressor, but it won't do me any good for nitrogen.