A system includes an object identification module, a tailgate position module, and a user interface device (UID) control module. The object identification module is configured to identify at least one of a bumper of a vehicle and a tailgate of the vehicle in an image captured by a camera mounted to the tailgate. The tailgate position module is configured to determine that the tailgate is closed when the bumper is identified in the image, and determine that the tailgate is open when at least one of: the tailgate is identified in the image; and the bumper is not identified in the image. The UID control module is configured to adjust operation of a user interface device based on whether the tailgate is open or closed.