My neighbor has a 2006 Ridgeline and the nav has never really worked\nright. Dealer is stumped. Nav system and antenna have been replaced\nmore than once, no joy. They have had it in several times. The problem\nis the GPS mislocates the car by hundreds of feet to hundreds miles\nsometimes. The reliabilty is so bad you can't really trust the system\nat all. Any short drive will show a failure.\n\nAny ideas?