I set up the Homelink about two months ago, no issues. Have both auto open and auto close turned on. Two days ago, auto close stopped working - auto open still works, and I can close "manually" no problem. I have changed nothing else - reverse out of the garage, the screen shows "auto close" but the distance countdown is no longer changing - so it never gets beyond 20 feet on the screen. It's like a sensor isn't recognizing that I'm actually backing out of the garage. Any suggestions on this one would be much appreciated!