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.

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: Light bulb position (Rear, Side)


Light bulb position (Rear) ■ Rear combination lamp - Type A ■ Rear combination lamp - Type B ■ Rear combination lamp - Type C ■ License plate lamp ■ High mounted stop lamp (1) Rear turn signal lamp (bulb type) (2) Back-up lamp (bulb type) (3) Stop and tail lamp (bulb type ...

Kia Optima DL3 2019-2025 Service and Repair Manual: Rear Glass Defogger Printed Heater


Repair procedures Inspection    • Wrap tin foil around the end of the voltmeter test lead to prevent damaging the heater line. Apply pressure on the tin foil with hand and move the t ...

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