✓ The faults of this engine were checked against sources (10/2026). Each item has at least two independent sources or an official recall or parts-maker technical note.
Kona Electric battery fire-risk recalls (built 2018-2023)
at any mileage · High risk
model years 2018–2023 only
Signs: Usually none; on some cars a battery warning light, or a charge limit set by the dealer until the fix
Fix: Ask a Hyundai dealer to check by VIN that all battery campaigns are done: BMS software update and inspection, and a new battery where cells are out of tolerance
free / recall
ICCU (on-board charger + 12V converter) failure: Ioniq 5, Ioniq 6, EV6
usually 0–150,000 km · High risk
model years 2021–2024 only
Signs: Bang from under the rear seat, 'Check EV system' warning, AC charging impossible, 12V battery goes flat and the car loses drive or will not start
Fix: Check by VIN that the ICCU recall and later software updates are done; a failed ICCU (and its fuse) is replaced, in Germany under a 15-year / 300,000 km warranty
€0–3,000
Electric coolant pump leak or failure (Kona / Niro EV 2018-2022)
usually 0–120,000 km · Medium risk
model years 2018–2022 only
Signs: EV system warning or 'Refill inverter coolant' message with the level normal; pump runs loud or fast; in bad cases reduced power
Fix: Dealer checks the pump for leaks and replaces it or its housing; if debris is found, the circuit is flushed and filled with the newer low-conductivity coolant
€0–800
Traction motor rumble or drive-unit clunk (Kona Electric 2019-2020)
usually 20,000–150,000 km · Medium risk
model years 2019–2020 only
Signs: Rumbling or grinding from the front drive unit, or a clunk when switching between drive and regen
Fix: Dealer inspects the motor and reduction gear per the Hyundai bulletin; worn parts or the motor are replaced, under warranty where it still applies
€0–3,000