There was a TSB (Technical Service Bulletin) just put out last week about the issues with the backup cameras and instructions to dealers on how to warranty them.
Doesn't look like the Cadenza is on the list, but I'm sure it's the same issue.
KIA TECHNICAL SERVICE BULLETIN - REAR BACKUP CAMERA - DECEMBER 2014
Doesn't look like the Cadenza is on the list, but I'm sure it's the same issue.
KIA TECHNICAL SERVICE BULLETIN - REAR BACKUP CAMERA - DECEMBER 2014