For the key interlock mechanism (this stops the ignition key being pulled out unless the AT shift lever is in the 'P' position), metal powder produced when caulking the key cylinder body cover might have deposited around the interlock lever due to the improper process of assembling the key cylinder body, and this may reduce the speed of the lever's move. Therefore, even when the AT shift lever is not in the 'P' position, it is possible to pull out the key, if it is done quickly. If the key is pulled out while the AT shift lever is not in the 'P' position and the parking brake is not engaged, the vehicle may start moving while it is parked.