Kia Optima: Auto door lock/unlock feature (if equipped)

Impact sensing door unlock system (if equipped)

All doors will automatically unlock when an impact causes the air bags to deploy. ...

Speed sensing door lock system (if equipped)

All doors will be automatically locked after the vehicle speed exceeds 15 km/h (9.3 mi/h). And all doors will be automatically unlocked when you turn the engine off or when you remove the ignition ...

See also:

Interior light
When the interior light switch is in the DOOR position and all doors (and trunk) are locked and closed, the room lamp will come on for 30 seconds if any of the below is performed. Without smar ...

Removal
1. Disconnect the negative (-) battery terminal. 2. Remove the front bumper.(Refer to the BD group - "Front bumper") 3. Loosening the he ...

When Your Vehicle Is Being Towed By Another Vehicle Other Than a Tow Truck (in case of an emergency)
Turn the ignition switch to ACC so the steering wheel isn’t locked. Place the transaxle shift lever in N (Neutral). Vehicles equipped with automatic transaxles should not exceed 28 mph and s ...