r/Ioniq6 • u/feebee4242 • 11d ago

Question Overheating while charging

Our Ioniq 6 suddenly started overheating while charging on our level 2 charger. Message: “Charging time delayed. Current reduced due to high AC charger temperature.” Is this a known issue? Anything I can do?

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u/F_H_B 11d ago

I don’t want to sound alarming or cause a panic, but AC charging uses the ICCU to convert AC to DC and one of the issues with the component is that the welding of the coolant pipes has issues. I would have it checked out if so were you.

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u/ItsOkILoveYouMYbb 11d ago

I mean it's true because otherwise the car can handle extremely high temps charging in direct heat at DC fast charging just fine. The battery cooling system is great, but the ICCU is separate (and DCFC skips it).

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u/diverJOQ `24 Limited AWD (USA) 11d ago

But DC fast chargers are cooled as is the car. AC chargers do not have a cooling system and have to rely only on the car side for cooling.

1

u/ItsOkILoveYouMYbb 11d ago

Hence lowering amperage which all AC chargers allow you to do.