A motor vehicle that is equipped with a movable convertible top comprising control equipment for controlling the convertible top motion and a detection device for recognition of an intervention into the range of motion of a convertible top mechanism, which is equipped with a sensor system with sensors operating with different measurement principles, wherein, when recognizing a malfunction of the detection device or when recognizing an obstruction situation, the convertible top motion is controlled in a safety mode during which the convertible top motion continues with reduced speed and power or is stopped or reversed.