Kia Optima: First generation (MS; 2000–2005)

Second generation (MG; 2005–2010)

The second generation Optima, known as the Kia Magentis globally except the United States and Malaysia, and as the Kia Lotze in South Korea, was launched in South Korea in November 2005. ...

See also:

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 ...

Removal
In the case of the vehicle equipped with immobilizer or button engine start system, perform "Key Teaching" procedure together ...

Rear parking assist system
The rear parking assist system assists the driver during backward movement of the vehicle by chiming if any object is sensed within a distance of 120 cm (47 in.) behind the vehicle. This system ...