An apparatus that controls opening and closing of a roof glass is disclosed. The apparatus includes a drive motor that is actuated to selectively open and close the roof glass. The apparatus stores a count value that changes in correspondence with operation of the drive motor. The apparatus detects the number of cycles of reset starting and determines whether the detected number of the reset starting cycles is in a predetermined acceptable range. The apparatus switches initial setting, in accordance with which the relative relationship between the actual open/closed position of the roof glass and the count value is determined, to a non-set state if it is determined that the number of the reset starting cycles exceeds the acceptable range.