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:

Camshaft Position Sensor (CMPS). Schematic Diagrams
Circuit Diagram ...

How vehicle audio works
AM and FM radio signals are broadcast from transmitter towers located around your city. They are intercepted by the radio antenna on your vehicle. This signal is then received by the radio and s ...

Rear seatback lock
When the rear seatback lock lever (located on the backside of the rear seatback) is in the “LOCK� position, it is not possible to fold the rear seatback down by using the release lock lever. ...