Charging on an AC charger stops or slows down (Ioniq 5, Ioniq 6 and Kona Electric, campaign 9B5)

Engine / equipment

Hyundai Ioniq 6, Ioniq 5 and second-generation Kona Electric

Period mentioned

2022–2024

Symptoms

When charging on an AC point (at home or on a 7–11 kW post), the session is interrupted or charging is slower than normal.

Possible cause described

According to Hyundai bulletin 24-01-051H-1 (campaign 9B5, September 2024), the car stops or reduces charging to avoid damaging the cable connection. The new logic of the charging manager (VCMS) makes it restart by itself and charge at full power again once things stabilise. It affects Ioniq 6 built from 14/12/2022 to 25/12/2023, Ioniq 5 from 4/10/2023 to 18/12/2023 and Kona Electric from 5/10/2023 to 13/7/2024.

Check for the garage

Check the build date and ask Hyundai by VIN whether the charging manager has the campaign 9B5 update. Also check that the cable and socket are not hot, dirty or damaged: if they are, do not charge until they have been checked.

Cost cited in the source

No parts cost: it is a software update; ask whether the warranty covers it.A rough figure from the original database, not an up-to-date quote.

Sources from the original database