THERE IS A CONSTANT SWINGING NOUSE IN THE WALL BEHIND THE SEATS WHICH IS CONSISTANT TO THE PROBLEMS A LOT OF OWNERS ARE HAVING. I HAVE THE SAME PROBLEM WITH MY MERCEDES AND THE NOISE JUST SEEMS TO BE SOMETHING IS FREE SWINGING INSIDE THE TANK OR AROUND IT WHICH IS VERY IRRITATING FOR SUCH A LUXURY VEHICLE. PLEASE GIVE ME A SOLUTION TO THIS PROBLEM THAT SEEMS TO BE COMMON WHEN THE VEHICLE IS DRIVEN OR STOPPING.