Hyundai Ioniq: Engine Coolant/Inverter Coolant / Checking the Coolant Level

Hyundai Ioniq (AE) 2017-2021 Owner's Manual / Maintenance / Engine Coolant/Inverter Coolant / Checking the Coolant Level

Hyundai Ioniq. Checking the Coolant Level

■ Engine coolant

Hyundai Ioniq. Checking the Coolant Level

■ Inverter coolant

Check the condition and connections of all cooling system hoses and heater hoses. Replace any swollen or deteriorated hoses.

The coolant level should be filled between the MAX and the MIN marks on the side of the coolant reservoir when the engine is cool.

If the coolant level is low, add enough distilled (deionized) water to bring the level to the MAX mark, but do not overfill. If frequent additions are required, see an authorized HYUNDAI dealer for a cooling system inspection.

Hyundai Ioniq. Checking the Coolant Level

■ Engine coolant cap

Hyundai Ioniq. Checking the Coolant Level

■ Inverter coolant cap

WARNING

Hyundai Ioniq. Checking the Coolant Level

Never remove the engine coolant cap and/or inverter coolant cap or the drain plug while the engine and radiator are hot. Hot coolant and steam may blow out under pressure, causing serious injury.

Turn the hybrid system off and wait until the engine cools down. Use extreme care when removing the engine coolant cap and/or inverter coolant cap. Wrap a thick towel around it, and turn it counterclockwise slowly to the first stop. Step back while the pressure is released from the cooling system. When you are sure all the pressure has been released, press down on the cap, using a thick towel, and continue turning counterclockwise to remove it.

Information

The engine coolant and/or inverter coolant level is influenced by the hybrid system temperature. Before checking or refilling the engine coolant and/or inverter coolant, turn the hybrid vehicle off.

WARNING

Hyundai Ioniq. Checking the Coolant Level

The electric motor for the cooling fan may continue to operate or start up when the engine is not running and can cause serious injury. Keep hands, clothing and tools away from the rotating fan blades of the cooling fan.

The electric motor for the cooling fan is controlled by engine coolant temperature, refrigerant pressure and vehicle speed. As the engine coolant temperature decreases, the electric motor will automatically shut off. This is a normal condition. If your vehicle is equipped with GDI, the electric motor for the cooling fan may begin to operate at any time and continue to operate until you disconnect the negative battery cable.

WARNING

Make sure the coolant cap is properly closed after refilling coolant. Otherwise the engine could be overheated while driving.

Hyundai Ioniq. Checking the Coolant Level

1. Check if the coolant cap label is straight In front.

Hyundai Ioniq. Checking the Coolant Level

■ Engine compartment rear view

2. Make sure that the tiny protrusions inside the coolant cap is securely interlocked.

Recommended coolant

  • When adding coolant, use only distilled (deionized) water for your vehicle and never mix hard water in the coolant filled at the factory.
  • An improper coolant mixture can result in severe malfunction or engine/ hybrid system damage. • The engine in your vehicle has aluminum engine parts and must be protected by an phosphate-based ethylene glycol coolant to prevent corrosion and freezing. • Do not use alcohol or methanol coolant or mix them with the specified coolant. • Do not use a solution that contains more than 60% antifreeze or less than 35% antifreeze, which would reduce the effectiveness of the solution.

For mixing percentage, refer to the following table:

Hyundai Ioniq. Checking the Coolant Level

Information

If in doubt about the mix ratio, a 50% water and 50% antifreeze mix is the easiest to mix together as it will be the same quantity of each. It is suitable to use for most temperature ranges of -31°F (-35 °C) and higher.

    Engine Coolant/Inverter 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...

    Changing Coolant

    Have coolant changed by an authorized HYUNDAI dealer according to the Maintenance Schedule at the beginning of this chapter. WARNING Do not use engine coolant or antifreeze in the washer fluid reservoir...

    Other information:

    Hyundai Ioniq (AE) 2017-2021 Owner's Manual: Seat Belt Warning Light


    Seat belt warning light As a reminder to the driver, the seat belt warning light will illuminate and warning chime will sound for approximately 6 seconds each time you place the Engine Start/Stop button to the ON position if the seat belt is unfastened...

    Hyundai Ioniq (AE) 2017-2021 Owner's Manual: Floor Mat Anchor(s)


    ALWAYS use the Floor Mat Anchors to attach the front floor mats to the vehicle. The anchors on the front floor carpet keep the floor mats from sliding forward. WARNING Do not overlay additional mats or liners over the floor mats. If using All Weather mats, remove the carpeted floor mats before installing them...

    Categories

    Hybrid Vehicle Interior Overview

    Hyundai Ioniq. Hybrid Vehicle Interior Overview

    1. Door lock/unlock button
    2. Driver position memory system
    3. Side view mirror control switch
    4. Central door lock switch

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