Rattle gone with seat down

[JoelF]

I have been chasing a rattle for weeks and I figured out that when the rear passenger side seat is down the rattle is gone. For the life of me I can't figure out why. I have spent hours raising, lowering, pounding, spraying WD40 and I can't find the rattle when the seat is up. Any ideas???? Thanks

[rayxi]

It might be the center seat belt retraction/lock mechanism. I'm not sure if there is anything you can do about it though. Try buckling up the center seat belt and yank hard/quick on it until it locks. Drive around with it that way to see if the rattle is still there.

[dkl]

It can also be the center arm rest. To verify, try lowering the center armrest, the noise should go away.

[Tim]

I just found my rattle - the rear seat cushion was not properly fastened down.