My 2009 Prius Touring MFD went out so I found one with the same part number on eBay. Everything works except the navigation screen, maintenance screen, and calendar. I only get multiple lines across the screen with those. I advised the seller of the problem and he asked if I had reprogrammed it to my car. He provided the vin # of the car it was removed from if needed. Is that necessary and if so, how is it done? Thanks in advance for any info.