Abstract: A control assembly moves a sunroof panel between a rearwardly upwardly tilted venting position, a closed position flush with the vehicle roof and a rearwardly downwardly tilted collapsed position from which the sunroof is retracted into a recess in the vehicle roof. The control assembly includes a carriage constrained within guide tracks and having a lift cam surface and a collapse cam surface. An actuator arm is pivoted to the sunroof panel and captured by the carriage and includes a lift cam follower which cooperates with the lift cam surface to move the sunroof panel toward the venting position, and a collapse cam follower cooperating with the collapse cam surface to move the sunroof panel toward the collapsed position. A brace member extends between the carriage and the actuator arm for assisting movement of the sunroof panel between the collapsed position and the venting position.