My '07 Edge did this as long as I owned it. About 30 miles into a road trip it would throw out a tire sensor fault. I always just lived with it, but it was aggravating. I traded it in yesteday on a 2010 Edge.... and 10 miles down the road I got a tire sensor fault. Woliver, I guess I gotcha beat there! I pulled over and of course the tires were all within spec. Its pretty aggrivating, I have to say. The price difference between my '07 and my '10 was considerable, it would be nice if I'd not paid all that money to have the exact same issue.