Have to say this is turning out to be a bigger deal for Ford edge. I purchased a 2010 Edge 7 months ago, just recently started hearing the same issues with a rattling noise. Not a big deal until a few days ago it started getting louder and I also had the clunking noise whenever I went over speed bumps. Your normal wear and tear, I thought. It actually is the top strut support that's part of the metal frame of the car. The welding points are separating from the frame. That is the rattling noise you get initially, and it grows. Hard to tell when is minor and the car is just not moving.

You can actually see the problem now in my Ford Edge, my welding points in the frame have separated. I just started complaining to Ford and so far no one has taking responsibility. If more people are getting the same problem in their Ford Edge, you should ask to check the welding points holding the metal that support the struts. you will only be able to see it if pressure is put on the strut. Wt least until it completely separates and bends like my situation.