Vehicle recall R/2018/103

Hyundai Ioniq recall: Coolant may leak into electric power control unit

DVSA recall R/2018/103 names the Hyundai Ioniq. It was launched 1 May 2018. It covers vehicles built 4 October 2016 to 31 March 2017.

Recall data updated 22 September 2026

Recall: R/2018/103
Launched: 1 May 2018
Issued by: HYUNDAI
Manufacturer reference: 71C062
Vehicles: 148 across the lines below

What can go wrong

The Electric Power Control Unit (EPCU) to have some cracks in the aluminium casting which may cause the casting to become porous. The EPCU is cooled by a coolant channel and due to the porous cracks it is possible for the coolant to leak inside the EPCU unit causing the high voltage system to immediately shut down.

The fix

To inspect the units with UV lamp. If found to be porous the unit will be replaced.

Models and build dates

As listed in the DVSA recall file. Vehicle numbers are DVSA figures for each line.
Model	Built	Vehicles
Hyundai Ioniq	4 October 2016 to 31 March 2017	148

Is a specific car affected? A recall lists models and build dates, not individual vehicles, so these pages cannot tell you whether one car is included. Enter the registration on the DVSA vehicle recall checker on GOV.UK, or give the vehicle identification number (VIN) to the manufacturer or one of its dealers. Buying used? Ask the seller for proof that any recall work was done.

Other recalls for these models

R/2018/297 Hybrid warning lamp eliminated on instrument cluster may indicate thermal damage to power relay assembly and power cable 10 December 2018, Hyundai Ioniq
R/2019/359 Wheel nuts not tightened to correct specification 8 December 2019, Hyundai Ioniq
R/2021/087 Potential electrical short in the lithium-ion battery 23 April 2021, Hyundai Kona, Hyundai Ioniq
R/2022/004 The accelerator function may not operate as intended when fully released 1 February 2022, Hyundai Ioniq
R/2026/159 Some vehicles fitted with a high voltage battery may have internal cell voltage deviation 15 June 2026, Hyundai Ioniq

Found one you might buy?

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Source

Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA vehicle recall records (RecallsFile.csv), recalls launched 1992 to 2026. Recall data updated 22 September 2026.

Recall wording is DVSA's, with capitals and punctuation tidied and American spellings such as tire, center and windshield given in British English. We list a recall when its make and model match a car or van family with at least 1,000 DVSA MOT tests from 2022 to 2025, and when the maker of the vehicle issued it.

Not affiliated with or endorsed by DVSA. Methodology · Data sources