Life sometimes presents unpleasant surprises, and often, the owner of the vehicle is outside before the door closed. At such moments, keenly felt their own helplessness, and if the cabin was a means of communication and you are in a hurry for an important meeting - it is difficult to imagine a more unpleasant situation.
To trigger the automatic lock may attempt theft of, damage to the alarm system or failure of locking mechanism. Often a situation arises when the driver got out to wipe the outside of forgetting to turn off the ignition, the system worked and the doors locked.