When I bought my '05 coupe last year in June, I received two fobs. I took the one in nicer shape to be my everyday and kept the spare in the house. Sometime between June and November when I put it away I had to put new batteries in my daily fob.
Yesterday, after the car being in storage for 4 months I went to use the daily fob and it was dead. The spare - with the old (original?) batteries is still working. What's up with that?