KNOWN FAULTS · Hyundai

Hyundai Ioniq Ioniq Electric common problems.

2016–2022 · Electric

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

12 V battery running flat on the Ioniq and NiroElectrical and electronic systems

Engine / equipment: Hyundai Ioniq and first-generation Kia Niro (hybrid, plug-in and electric)
Period mentioned: 2016–2022
Symptoms: In the morning the car will not start or switch on because the 12 V battery is flat, sometimes even after charging overnight. On the electric versions, the charge port sometimes does not lock and charging is impossible.
Possible cause described: Hidden consumers (charge management, door contacts, infotainment) drain the auxiliary battery; the exact cause is not confirmed and software and hardware updates are mentioned. On the electric Ioniq before the 2019 facelift, the small motor that locks the charging connector jams.
Check for the garage: Measure the 12 V battery and its standby drain; ask about software updates; if the connector does not lock, use the emergency release and replace the lock motor.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Applies if: Only about 5,700 Ioniq Electrics were in the campaign: confirm by VIN.

Battery fire risk on the Kona Electric: battery replacementHigh-voltage battery

Engine / equipment: Hyundai Kona Electric built 2018–2020 (also about 5,700 Ioniq Electrics)
Period mentioned: 2018–2020
Symptoms: No prior warning: fire risk from the high-voltage battery, also when parked or charging.
Possible cause described: A Korean investigation pointed to defects in the LG Energy Solution cells (LG disputes it). After a first battery-management update that limited charging, in 2021 Hyundai decided to replace the entire battery on about 82,000 vehicles worldwide (75,680 Konas).
Check for the garage: Check by VIN that the battery has already been replaced under the campaign; if not, follow Hyundai’s instructions until it is replaced.
Cost cited in the source: Free under the recall.A rough figure from the original database, not an up-to-date quote.