Hyundai Sonata: Cooling system - Explanation of scheduled maintenance items - Maintenance - Hyundai Sonata Owners ManualHyundai Sonata: Cooling system

Check cooling system components, such as radiator, coolant reservoir, hoses and connections for leakage and damage. Replace any damaged parts.

    Valve clearance
    Inspect excessive valve noise and/or engine vibration and adjust if necessary. An authorized HYUNDAI dealer should perform the operation. ...

    Coolant
    The coolant should be changed at the intervals specified in the maintenance schedule. ...

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