Have a 2010 xc60 the navigation screen is black like its shut off. When I put it in reverse it turns whitish gray. Could my screen be bad or is something else going on. Has navigation dvd player in the trunk, player works. have codes RDAR-u300004 control module system internal failures, RDAR-u300055 control module system programming failures not configured, RDAR u300362 battery voltage algorithm based failures signal compare failure. have checked fuses they are good.