My Hyundai Ioniq Electric Experience:
The Costly Coolant Issue not covered by Hyundai's infamous warranty or their expensive service plan.
Worth reading...
I created this page to share my personal experience with a known coolant issue in the Hyundai Ioniq Electric.
I believe Hyundai should take responsibility for this problem, as I had to pay out of pocket for repairs that many owners have also faced.
How This Affects other Ioniq EV Owners
I am not alone in facing this problem. Other Hyundai Ioniq Electric owners have reported similar battery coolant-related issues on forums and social media.
So what happened?
1. Coolant warning on dashboard
My barely 4 year old Hyundai Ioniq EV warned me to replace the coolant.
2. Hyundai dealership repaired it
I took it into Hyundai in December 2024 and they said they need to replace the battery coolant and warned me that if I don't do it, it will void my warranty.
I paid £613 out of pocket for 2hrs of battery coolant replacement!
3. I complained to Hyundai UK Customer Support
They told me:
- Coolant needs to be replaced every now and again,
- It sounded as though they didn't know the difference between engine coolant and battery coolant,
- Claimed there's no service recalls for battery coolant issues,
- Claimed the battery coolant isn't covered by my infamous Hyundai warranty or by my expensive service plan.
Inconsistent information presented by Hyundai UK
- I did hours of research online only to find out there was in fact a service recall for the Battery Coolant Issue with Hyundai Ioniq EVs, despite what Hyundai told me.
- After I pressed and chased them, Hyundai did some investigation and stated the service recall was apparently "done" in 2023.
- Hyundai did not question why in 2024, my battery coolant would need to be replaced again.
£613 out of pocket for work which was apparently "already done"
Cost of Hyundai labour
£613 for my Hyundai Ioniq EV battery coolant replacement
Charged by Hyundai
Not covered by Service or Warranty
UK Customer Support advisor
Summary of Hyundai's Service Campaign number 23-01-049H I discovered after hours of research online
Affected Models: Certain 2020-2021 Ioniq Electric and 2019-2022 Kona Electric vehicles.
Issue: Debris in the cooling system can restrict coolant flow, causing the electric water pump to operate at abnormally high speeds. Symptoms include "Coolant Supplement" or "Refill Inverter Coolant" warning lights, without any related diagnostic trouble codes (DTCs), and normal inverter coolant reservoir levels.
Solution: Flush and clean debris from different cooling system circuits using special tools, and replace the existing coolant with updated BSC-2 low conductivity blue coolant
This campaign addresses the crystallization issue in the original BSC-1 coolant, which can lead to blockages and potential overheating. The updated BSC-2 coolant is designed to prevent such crystallization.
What I Want from Hyundai
- A thorough and documented investigation into why the coolant needed to be changed twice from 2023-4.
- A refund of the £612.31 I paid for an issue that should have been covered under a service campaign.
- Additional compensation for my time and effort in researching, understanding and escalating this matter in order to ensure a fair outcome.
- A commitment to ensuring that other Hyundai owners do not face the same issue with their Hyundai EVs.
Hold Hyundai Accountable for Battery Coolant Issues in Electric Vehicles
Do the right thing, Hyundai UK.
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