As soon as I purchased my '04 XF coupe I realized this problem of the center console lid hitting the rear firewall. The sound of it hitting was what bothered me along with the marks that would result from this happening over and over. I had some small ( a little larger than a pencil eraser) black foam rubber bumpers that I think came from some electronic equipment (provided so it would scratch furniture?). Anyway, I peeled off the paper backing and stuck it on right where the lid hit the rear wall. You can probably pick up a pack of these at a hardware, Radio Shack or drug store for about a buck.