Took mine in 11/2009 had oil change computer update, & Spoiler nuts checked.
Well yesterday while open trunk and guess what I hear; a nut rolling around in my Trunk.
So not sure how dealer fixed it. but I know what I will be doing now.
That tubing and magnet trick Thanks.

And put some Locktite on. Whitch it should since I had the 2010 serviced and requested this to be checked back in Nov of last year.