A vehicular imaging system includes a camera device disposed at an exterior portion of a vehicle. The camera device includes a pivotable arm that accommodates a camera. The pivotable arm is pivotally mounted at a mounting base at the vehicle and is pivotable between at least a drive position and a folded position. An actuator includes a pivot post structure attached to the mounting base and an output gear disposed at the pivot post structure, the actuator operable to pivot the pivotable arm about the output gear. The actuator includes a primary detent that is engaged to maintain the pivotable arm at the drive position when the pivotable arm is pivoted to the drive position. The actuator includes a secondary detent that is disengaged when the pivotable arm is manually pivoted between the folded position and the drive position.