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: Crankshaft Position Sensor (CKPS)

Description and operation Description • Crankshaft Position Sensor (CKPS) detects the crankshaft position and is one of the most important sensors of the engine control system. • If there is no CKPS signal input, fuel is not supplied. Th ...

Kia Optima DL3 2019-2025 Service and Repair Manual: Interior Trim

Components and components location Components 1. Front pillar trim 2. Cowl side trim 3. Center pillar lower trim 4. Center pillar upper trim 5. Front door scuff trim 6. Rear door scuff trim 7. Rear pillar trim 8. Front door step trim 9. ...