Originally Posted by pizzaguy

Make sure you dig in there and see if there is any water in the cavities and pits in the trunk and wheel wells. If you find no water, we can almost assume this is yet another electrical glitch that you may never see again.
The top can do similar stuff, where a re-sync or battery disconnect clears it. In these cases, most people run to a dealer and spend $$$$, when it really is not necessary.

If you find water, it is a totally other story, but it is important to GET IN THERE and LOOK, because if there is water in there, then more water is gonna get in there and things are gonna get worse; if there is water, you've got to STOP it from getting in.

Tearing the trim out is NOT a hard thing to do, the plastic rivets are easy to yank out of you know how (large dikes or the tool the auto parts store sells makes it easy).