I've had my 08 Fusion for 3 months and I love it. A few days ago the rear speakers started to make popping sounds when the brakes were applied. I took it to the dealer and got it back yesterday. They said there was a problem with a ground wire and they fixed it. When I picked it up it seemed to be fine. But today they started making the same noise only not as loud. When I called the dealership they said they fixed it according to the Ford regulations but it could be something else. Has anyone else had this problem.