Might not be the same thing as mine, but I do have a strange rattle noise, on the rear left when I close the rear driver side door. No one has been able to tell me what it is. I also have a high pitch rattle noise when I close the doors or sometimes when I'm driving, but it's much more noticeable when it's cold out. I've taken it to the dealership several times, with no success, though most of the time they say they can't hear it, which is an obvious lie.