So I officially got tired of the Japanese rattles in my car today and went out and picked up some Dynamat. Hope I won't regret this as it's a lease. Anyway doing the doors was fine and it solved all of the problems in the front. However I still have the rattles from the bose sub in the deck/shelf. Does anyone know how to get in there on the sedan? The DIY for the coupe isn't going to help. Thanks guys!

 

Its a pain. The entire back seat must come out and then there are like a million little clips and screws to remove along with a few panels before the deck can be removed.

 

with all that crap holding it in place, you would think it wouldn't rattle. my rear deck rattle is driving me insane.

 

It might be from below the parcel shelf. I just had mine off and the only thing that might rattle top side is the grill against the speaker or the 3rd brake light. Underneath is a lot more wires and things that can rattle. You can access them by taking the top of the trunk liner off. The wire that goes to the 3rd brake light might rattle as is passes through a hole in the parcel shelf. You can plug the hole from the trunk. Might work and it is lots easier than taking the interior out.

 

might have to give it a try

 

I had a rattle in mine after I put a sub in the shelf. Yesterday I took it off and found the rattling offender. I put Dynamat over the whole thing just in case. Infiniti must have knownit rattled because they had a small piece of padding on it. It is on the rear/passenger side of the speaker, a few inches from the speaker. A cable runs across the shelf and a clip goes through the shelf to anchor it. You should be able to see andfeel it from the trunk side. If you put some dynamat over it from the bottom or do anything else to tighten it it should stop it. It should be much easier than taking the seats, center armreast, 4 pieces of trim and the parsel shelf to get at it from the top.

 

I deadened what I could in the trunk, but still have horrendous rattle coming from the rear shelf, so it sounds like I have to take the seats out.