Mine worked 'Eventually', up to 14 seconds after reverse gear was selected, It used to drive me crazy, I also asked if the camera could be 'modded' to work all the time the ignition was switched on. So that I could monitor my 'towed' car, and have some rear view, My van is a 2012 Frontier Savannah with no through vision. Autotrail were very unhelpful, saying that it would be 'against the law' to do so.......poppycock ! Anyway, got a private fitter to come to my home and fit a dual camera, that does just as I asked. I consider the £999 media pack, to be very poor value, and wouldn't have another. Better to buy seperate, better quality units. As for the habitation door, the contacts on the door edge and the door jamb need cleaning with emery cloth and spraying with 'contact' oil every now and again.Or it won't work with the central locking.