See also:

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 ...

Smart key
With a smart key, you can lock or unlock a door (and tailgate) and even start the engine without inserting the key. The functions of the buttons on a smart key are similar to the remote keyless ...

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 ...