I noticed this problem over the weekend and I need to take some pictures (I don't know how to post pics on here but I will figure it out). The top layer of the plastic/metal housing under the spoiler is starting to peel and it is concerning me. It is tough to describe the location so I will have to take pictures. I had the car almost 4 years and drive it everyday. I keep it in a garage and have 50K miles. I think the sun or water caused this problem.