Ive cut and pasted a section from a post on TSX.COM, sounds very similar to the issue some of us are having..... and a possible solution...
Just wanted to share how Lindsay Acura (Columbus OH) fixed my rear deck creak. First the problem: Very noticeable creak/rattle every time I took a turn at low speeds (traffic light/parking lot speeds, 10-25mph). Very irritating to say the least.
The spot the creak was coming from seemed to come from the metal frame behind the rear seats. Seats were removed and EPT tape placed under the rear shelf - no luck. Rear interior trim panels, rear shelf, rear windshield and even the trunk lid and hinges removed - no luck. They contacted Acura and apparently there have been reports of this problem from a number of dealers and no one has been able to figure it out.
Rear speakers and seatbelt assemblies were removed - no luck.
Eventually (this was after they had the car over a week and a half), with all those parts out, they narrowed it down to a spot weld on the frame behind the left rear seat. They massaged the metal in that spot and finally, finally got rid of the problem!
