So at first I was backing into my garage, and when I would pull out I had to use the center screen to close the door. I pulled in a few times, and noticed that after I back out, it will automatically close the door, no action needed on my part other than pulling the car out of the garage. Why does this only work when backing out? How does it know when is the right time to close the door? If it was GPS based, wouldn't it work for both backing out, and pulling out?