With the smart key

Carrying the smart key, you may lock and unlock the vehicle doors (and liftgate). Also, you may start the engine. Refer to the following for more details.
Locking
Pressing the button of the front driver side door handles with all doors (and liftgate) closed will lock all doors (and liftgate) and any unlocked doors.
The button will only operate when the smart key is within 0.7~1 m (28~40 inches) from the driver side door handle. If you want to make sure that a door has locked or not, you should pull the driver side door handle.
Even though you press the driver side door handle buttons, the doors will not lock and the chime will sound for 3 seconds if any of following occur:
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The smart key is in the vehicle.
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The ignition switch or ENGINE START/STOP button is in the ACC or ON position.
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Any door except the liftgate is open.
Unlocking
Pressing the button of the front driver side door handles with all doors (and liftgate) closed will unlock all doors (and liftgate) and any locked doors.
The button will only operate when the smart key is within 0.7~1 m (28~40 inches) from the front driver side door handle.
When the smart key is recognized in the area of 0.7~1 m (28~40 inches) from the front driver side door handle, other people can also open the door without possession of the smart key.
After pressing the button, the doors will lock automatically unless you open any door within 30 seconds.