So did you EVER pull all the trim out of the trunk and look for water intrusion or signs of water damage? "Letting the car air out" is not answer, the problem is not getting it to dry out, the ANSWER is to get in there and see what you have. IF you have water damage, we can go from there - it will not be an easy or quick fix, but this can be resolved.

Yea, go ahead, take it to a stupid-assed dealer. Remember to leave a blank check with ********, it wont get the car fixed, but they will insist on being paid anyway.