I thought the same about the fob but the night when I got home I was in the garage with the door open and had put the keys on my toolbox while having a smoke. I then went to bed. If it was the fob I would have seen the lights blink and the beep. The next day I got out, locked it and walked to the office. I never sat down within fob range. It seemed very peculiar to have it happen twice in the rain. If it was a user fob error I will eat my shirt.