How do I replace a lighter fuse in my 2004 X5 BMW - my lighter does not work

If you open the cargo (trunk) lid,on the right side behind the tail light you will see a carpeted access cover,just pull at the top of the cover to remove,behind that there is a felt type piece of material,pull that up and the rear fuse panel is there.on the side of the cover there should be a fuse chart.the picture for the lighter fuse's look like + sign