I'm willing to bet this is a relatively unknown 'feature' in the car. Last summer I was returning to Phoenix from central IL, and pulled into my hotel to check in, all I took with me were my wallet and key fob. The actual key was 1,000 miles away in AZ. Came right back out and the car wouldn't let me in or recognize the fob in any way. Triple-A got me into the car but it still wouldn't recognize the fob, so it wouldn't start, naturally. The Triple-A guy actually went back to his shop and checked on the car and returned to the hotel with an idea. We "broke into" the car again and put the fob in the carpeted pocket in the glove box and it came back to life and has worked well ever since...except for the issues you all have mentioned here, where it regularly says "No Fob Detected." I have a big blister pack of Eveready batteries and always keep a new one in my fobs, too. They're just wonky, I think.When I purchased my 2006 XLR-V one of the key fobs refused to work even when I installed a new battery in it. I finally had to resort to reprogramming it. There is a pocket on the left in the glovebox where you insert the fob with the buttons facing to the right. The owner’s manual has a procedure for programming a fob and it reprogrammed it as fob number three. It works perfectly now.