Pad is just about 2 years old and stopped working this weekend. When I say "doesn't work", it lights up when you touch the keys, but I can't get it to lock/unlock the doors. Thank God I was at home with my spare key; I always lock my keys in it. Lights on indicates that the battery is working on these things should last at least 10 years is my guess. I do use it heavily (2-3 times a day). I have the manual that came with it and thought about doing a re-program. Anyone?