I went on a 15 mile round trip drive yesterday, and my 2001 2.5 developed a rattle from the rear. There had never been a rattle before. Started small, like something in the trunk. Got worse as I neared home. I thought the trunk lid might be unlatched. It occurs when the road is bumpy.

Drove car today, and it rattles like a loose shock, when I go over bumps. I put the top down, and the rattle went away. Amazing. The top does not apear to be loose. I recall the weak rear shock mounts, and thought that a likely candidate, but why would the noise go away with the top down? And it's not that the rattle is masked by road noise with the top down. It's VERY noticeable with the top up, and not discernable with the top down.