You do have to remove the whole rear panel,(bumper).To help get it off without dropping/cracking/scratching it,you need to enlist a friend to hold one end for you. There are about 10 fasteners holding it,a couple inside the rear wheel arches,4 under the car and 4 along the line of the boot.Some are nuts,some plastic screw things and some where you pull the centre pin out to relax the expanding securing clip.There will be a wiring loom plug to disconnect.Put some old carpet at the rear to sit it on.