For the parking lock mechanism of the automatic transmission (the mechanism is to mechanically secure the output shaft of the automatic transmission), the shift lever may not be properly manufactured, and therefore, the lever may interfere with the valve body when it is placed in the park position, in which case the parking pole and the parking gear may not engage properly. If the vehicle is parked on a hill and the parking brake is off, the gear may come under a lot of pressure, and in the worst case, the vehicle might start moving.