As a few posters have mentioned there is a bug that if you start a route while out of GPS range (for me in a parking garage) the nav sometimes cannot pick up your location properly once the GPS is subsequently aquired. It'll show the car moving backwards or between roads. A quick off on of the unit seems to reset it and sometimes it resolves on its own. Is there a TSB for this? We're due for our 10k service and amazingly to me this is all I have to talk to them about!