Kia Optima DL3: 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 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.
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 personal injury from escaping hot coolant or steam.
Other information:
Kia Optima DL3 2019-2026 Service and Repair Manual: Fog Lamp
Repair procedures Removal Front Fog Lamp 1. Disconnect the negative battery terminal. 2. Remove the front bumper assembly. (Refer to Body - "Front Bumper Assembly") 3.
Kia Optima DL3 2019-2026 Service and Repair Manual: Smart Key Antenna
Repair procedures Removal Interior Antenna 1 1. Disconnect the negative battery terminal. 2. Remove the surround view monitor (SVM) unit. (Refer to Advanced Driver Assistance System (ADAS) - "Surround View Monitor (SVM) Unit") 3.
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