Hyundai Ioniq: Engine Mechanical System / Cooling System

Cylinder Block. Repair procedures

Disassembly    • Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system...

Coolant. Repair procedures

Engine Coolant Refilling and Bleeding [Drain]    • Never remove the reservoir tank cap when the engine is hot.• Serious scalding could be caused by hot fluid under high pressure escaping from the radiator...

Other information:

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Trip modes

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Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Plug-in hybrid mode indicator

CD (Charge Depleting, Electric) mode : The high-voltage (hybrid) battery is used to drive the vehicle. CS (Charge Sustaining, Hybrid) mode : The high-voltage (hybrid) battery and gasoline engine is used to drive the vehicle. Information Even when the battery charging rate is high and driving in electric mode is possible, engine may turn on in some areas to protect the system...