Had an interesting situation today with the battery going dead in my key fob. Had I not been reading this forum (I know, it's in the manual) I would have been SOL. Went grocery shopping and when I went to put groceries in trunk, wouldn't open. I attempted to open driver's side door to release trunk lock...nothing. Used the pull-out key in the fob, then plugged the fob in the receptacle in the arm rest and everything started up. This fob had been in use since new (purchased car 2/2010). Guess 4 yrs. is not bad on the battery. Anyway, a big thanks for having threads like this on the forum. I guess the alternative is RYFM.