Kia Optima: Maintenance / Engine coolant

Kia Optima DL3 2019-2025 Owner's Manual / Maintenance / Engine coolant

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 a year: at the beginning of the winter season, and before traveling to a colder climate.

Checking the coolant level

Engine oil

Checking the engine oil level ■ THETA 2.4L - GDI 1. Be sure the vehicle is on level ground. 2. Start the engine and allow it to reach normal operating temperature. 3. Turn the engine off and w ...

Checking the coolant level

WARNING Removing radiator cap Never attempt to remove the radiator cap while the engine is operating or hot. Doing so might lead to cooling system and engine damage and could result in serious ...

Other information:

Kia Optima DL3 2019-2025 Owner's Manual: Check tire pressure

You can check the tire pressure in the information mode on the cluster. - Refer to “User settings mode” in chapter 4. Tire pressure is displayed 1~2 minutes later after driving. If tire pressure is not displayed when the vehicle is stopped, “Drive to display” message displays. ...

Kia Optima DL3 2019-2025 Owner's Manual: Smart key function

To remove the mechanical key, press and hold the release button(1) and remove the mechanical key (2). To reinstall the mechanical key, put the key into the hole and push it until a click sound is heard. With a smart key, you can lock or unlock a door (and trunk) and start the engine. Refer ...