See also:

Engine cooling system
The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory. Check the antifreeze protection and coolant level at least once ...

Interior Refinement
The style makeover continues into the Optima's cabin with expanded electronics melded with refreshed fascia patterns and color schemes. Based on a new platform, the standard audio system features ...

Instrument panel overview
1. Instrument cluster.................................4- 2. Light control / Turn signals ...................4- 3. Steering wheel audio controls* ............4- 4. Horn ........................... ...