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 Service and Repair Manual: Emergency Signal System

Description and operation Description Introduction of quick brake warning system (ESS) In case of quick brake by driver, the brake lamp or turn signal is blinked to warn against the vehicle at rear. 1. Basic function (Blinking the brake lamp/emergency lamp) ...

Kia Optima DL3 2019-2025 Owner's Manual: Audio system

✽ NOTICE If you install an after market HID head lamp, your vehicle’s audio and electronic device may malfunction. Antenna Glass antenna When the radio power switch is turned on while the ignition switch is in either the "ON" or "ACC" position, your car will receive both AM and FM broa ...