Coco777

Hi, I'm new on here. I recently purchased a 2006 E350 4matic. The navigation disc is in the navi player in the trunk of the car. I already disconnected the battery cables and let it reset for about 10 mins. On the dash of the car, it always shows that I'm going in the same direction (east). I think this is why the navi is not working. Anyone knows how to fix this issue?
Thanks