want to find out any had had experience with rattle or thumping noise from the rear seat head rest or rear deck? what might be the cause or fix for it?
i got an 08 TL-S in june and had had the noise since then. don't really want to take to the dealer yet, they will probably end up not fixing the problem and making it worst by loosening more stuff. most of the time, dealers are good at bs-ing and gouging money from car owners.

 

Maybe this can help?

http://www.in.honda.com/Rjanisis/pubs/SB/B04-043.PDF