With this feature, you can delay the actual locking of the doors.
When the power door lock switch is pressed when the key is not in the ignition and the driver door is opened, a chime will sound three times indicating that delayed locking is active.
When all the doors are closed, the doors will lock automatically after five seconds. If a door is reopened before five seconds have elapsed, the five second timer will reset itself once all the doors are closed again.
You can press the door lock switch again or the lock button on the RKE transmitter to override this feature and lock the doors immediately.