This feature prevents the driver door from being locked using the power door locks, if the key is left in the ignition and a door is open.
Press the power door lock switch to lock all the doors and then unlock the driver door.
Press and hold the power door lock switch for more than three seconds to override this feature.
If the key is removed from the ignition, or if the manual door lock or the Remote Keyless Entry (RKE) transmitter is used, the key could still be locked inside the vehicle. Always remember to take the key with you.