Hi just wondering if anyone else had problems with their back up camera on a 2004 LS430? My last LS430 rear camera was not working properly and the camera on my recent LS430 is not working either. I bought both cars pre-owned, both have the Mark Levinson sound system and when I put the car in reverse, the screen is just black and it still gives the "all objects....." message. Any help is appreciated. THanks....