While driving home tonight, noticed that my GPS position didn't seem to be updating properly. I was on the highway when I noticed and at first, it seemed like my position was traveling at the right speed, but several hundred feet to the east of where I actually was (I was riding on a highway, driving almost exactly north). I tried resetting the screen by holding down the two scroll wheels and when everything came back up, my position was again in the wrong place, but now doesn't seem to move at all. The car is currently sitting in my garage but the position is reading as several hundred feet to the west and it doesn't seem to move at all currently if I drive around. I also tried resetting the other screen, but that didn't seem to fix anything either. Finally, I tried turning the car off by going into the controls menu and manually turning it off there. When I turned the car back on, still not working. Thoughts?