If you do not want you XF to be towed. Just back it into a spot where the tow truck driver cannot get to the tow hook under the rear bumper. A lot of people do not know that you have to remove the lower front grille to get to the front tow hook. The poor tow truck driver will have a heck of a time trying to find a place to "hook-up" the device with all the plastic shielding in the way underneath.