KIA Niro: Checking the inverter coolant level (HEV)

If frequent additions are required, we recommend that the system be inspected by a professional workshop.

Kia recommends to visit an authorized Kia dealer/service partner.

The inverter coolant level should be in between MAX and MIN when the engine is cooled down.

WARNING

Adding other cooling substances or water might lead to inverter cooling system degradation or even failure.

Checking the inverter coolant level (HEV)

  • Turn the vehicle off and wait until it cools down.
  • Use extreme care when removing the inverter coolant reservoir cap. Wrap a thick towel around it, and turn it 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 to remove it.
  • Check the condition and connections of all cooling system hoses and heater hoses.
  • Replace any swollen or deteriorated hoses.
  • Check the coolant level. The coolant level should be filled between MAX and MIN marks on the side of the coolant reservoir when the engine room is cool.
  • If the coolant level is low, add enough specified coolant to provide protection against freezing and corrosion.

    Bring the level to MAX, but do not overfill.

WARNING

Make sure the inverter coolant reservoir cap is properly closed after refill or coolant.

Otherwise the inverter could be overheated while driving.

  1. Check if the inverter coolant reservoir cap label is straight In front.
  2. Make sure that the tiny protrusions inside the inverter coolant reservoir cap are securely interlocked.

WARNING

Removing inverter coolant reservoir cap

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

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