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: Lane Keeping Assist (LKA) ON/OFF Switch

Schematic diagrams Connector and Terminal Function Repair procedures Inspection 1. Disconnect the negative (-) battery terminal. 2. Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel") ...

Kia Optima DL3 2019-2025 Service and Repair Manual: Rear Door Module

Components and components location Component Location 1. Rear door module Repair procedures Replacement • When removing with a flat-tip screwd ...