This feature helps to prevent a driver from locking the keys inside of the vehicle by disabling the power door locks when the following occurs:

The lockout protection feature can be overridden by holding the power door lock switch in the lock position for more than three seconds while the key is in the ignition and any door is open.

This feature cannot guarantee that you will never be locked out of the vehicle. If the manual door lock is used or if the key is left in the vehicle, but not in the ignition, you could still be locked out of the vehicle. Always remember to take the keys with you.