Kia Optima: Second generation (MG; 2005–2010)

First generation (MS; 2000–2005)

From 2000-2005 Optimas were a rebadged variant of the Hyundai Sonata, differing only from the Sonata in minor exterior styling details and equipment content. ...

Third generation (TF; 2011-present)

The completely redesigned Optima features a much sleeker, sportier profile designed by new Kia design chief Peter Schreyer. ...

See also:

Rail Pressure Sensor (RPS). Troubleshooting
Signal Waveform ...

Auto Head Lamp Leveling Unit. Schematic Diagrams
Circuit Diagram ...

Lighting control
The light switch has a Headlight and a Parking light position. To operate the lights, turn the knob at the end of the control lever to one of the following positions: (1) OFF position (2) Parkin ...