Smart Key Functions
With the smart key, you can lock and unlock the vehicle doors. You can also start the engine. Refer to the following for more details.
Locking

Pressing the button on the front outside door handle with all doors closed and any door unlocked locks all doors (and hood, trunk).
The hazard lights will flash once to indicate that all doors are locked. The button will operate only when the smart key is within 0.7 to 1 m (28 to 40 in.) outside the door handle. If you want to make sure the door is locked or not, check the door lock button inside the vehicle or pull the outside door handle.
Even if you press the button, the doors will not lock and the chime will sound for 3 seconds if any of the following occurs:
- The smart key is inside the vehicle.
- The ignition switch is in the ACC or ON position.
- Any door other than the trunk is open.
Unlocking
Pressing the button on the driver's outside door handle with all doors closed and locked unlocks the driver's door. The hazard lights will flash and the horn will sound twice to indicate that the driver's door is unlocked.
Pressing the button on the front passenger's outside door handle with all doors closed and locked unlocks all doors. The hazard lights will flash and the horn will sound twice to indicate that all doors are unlocked. The button will operate only when the smart key is within 0.7 to 1 m (28 to 40 in.) outside the door handle.
Unlocking the Trunk
If you are within 0.7 to 1 m (28 to 40 in.) of the outside trunk handle while carrying the smart key, the trunk will unlock and open when you press the switch on the trunk handle.
The hazard lights will flash twice to indicate that the trunk is unlocked.
Also, when the trunk is opened and then closed, the trunk automatically locks.
Test yourself
A quick Kia Forte BD quiz: every answer comes with an explanation and a link to the manual page.