Hyundai Sonata: Valve clearance - Explanation of scheduled maintenance items - Maintenance - Hyundai Sonata Owners ManualHyundai Sonata: Valve clearance

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

    Spark plugs
    Make sure to install new spark plugs of the correct heat range. ...

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

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    Tire chains
    CAUTION Only certain SAE class “S” tire chains can be used on this vehicle. Using the wrong Class “S” chains on this vehicle will cause damage to the vehicle. If you plan to use tire chai ...

    If the light is blinking
    If the light is blinking while driving, an engine misfire condition has been detected which may damage the emission control system. To prevent serious damage to the emission control system, you sho ...

    Danger, Warnings, and Cautions
    Warning messages found on vehicle labels and in this manual describe hazards and what to do to avoid or reduce them. Danger indicates a hazard with a high level of risk which will result in ...