I just happened to notice my right side pedal door was gone one day. Had never touched it before as it is the non meter side of the XC100's. Garmin sent out a new one. Yesterday was at the trail head with a friend I had recommended the pedals to....she said hey, for some reason my pedals aren't connecting lately, can you take a look? I walk over, her battery side door is gone and of course the batteries as well.....and we had just completed a very wet ride....port full of water and dirt. These were new pedals and she had never touched the doors.