the rearview camera does not always come on when the vehicle is put in reverse. It appears to be the same issue as the newer Lincoln navigators and other fords for which a recall was just issued. The recall number for Ford is 25S49. The recall needs to include the 2017 navigator as well. You can not see behind the vehicle when the camera malfunctions The vehicle has not been to the dealer for the issue yet when the camera does not work there is a error message