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:

Schematic Diagrams
Circuit Diaram ...

Rear window defroster
Type A Type B The defroster heats the window to remove frost, fog and thin ice from the interior and exterior of the rear window, while the engine is running. To activate the rear window defr ...

Removal
Passenger Compartment Junction Box (SJB) 1. Disconnect the negative(-) battery terminal. 2. Remove the crash pad lower panel (A).(Refer to the BD group - "Crash p ...