Same Problem on my 2011 Fusion. By any chance did you happen flip the mirror. I sit up pretty high and my mirror rides kinda low and I flipped it and NE became NW. It seems the N and S are correct but the East and West are backwards. My sensors for the compass are hidden in the rear view
Mirror and I flipped it back around and all the world was once again right. Just a thought.
--Wook