Both mine and my wifes F3L seem to keep having the message that the rear lid is open. I studied it the other day and just figured the post on the lid is just a hair short. I put a piece of electrical tape on it and have not had it come up again. Did it to my wifes f3 and hers has also stopped. Just the thickness of the electrical tape did the trick. Knock on wood. Im trying to think of something that would do the same thing that would look a little better. Any suggestions?