Hyundai Sonata: Changing the coolant - Engine coolant - Maintenance - Hyundai Sonata YF 2011-2018 Owner's ManualHyundai Sonata: Changing the coolant

Have coolant changed by an authorized HYUNDAI dealer according to the Maintenance Schedule at the beginning of this section.

CAUTION

Put a thick cloth or fabric around the radiator cap before refilling the coolant in order to prevent the coolant from overflowing into engine parts such as generator.

WARNING - Coolant

  • Do not use radiator coolant or antifreeze in the washer fluid reservoir.
  • Radiator coolant can severely obscure visibility when sprayed on the windshield and may cause loss of vehicle control or damage to paint and body trim.
    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 se ...

    Brake fluid
    Checking the brake/clutch fluid level Check the fluid level in the reservoir periodically. The fluid level should be between MAX and MIN marks on the side of the reservoir. Before removing the ...

    See also:

    Warning / Caution Label Locations
    1. Fan caution 2. Radiator cap caution 3. Battery caution ...

    Electrical System
    1. Be sure to disconnect the battery cable from the negative (-) terminal of the battery. 2. Never pull on the wires when disconnecting c ...

    CVVT Oil Control Valve (OCV). Repair procedures
    Inspection 1. Turn the ignition switch OFF. 2. Disconnect the OCV connector. 3. Measure resistance between the ...