Hyundai Motor America will be asking owners of certain 2020 Hyundai Ioniq Electric and 2019-2020 Hyundai Kona Electric vehicles to return to their dealerships because of a problem affecting the lithium-ion battery.
In March 2019 Hyundai received three reports of Kona electric vehicles catching fire while parked. All vehicles involved were reportedly parked with a fully charged battery. Further investigation found several similar incidents which initiated an investigation into the problem. As a result of this investigation, a campaign was launched to upgrade the BMS software for early detection of abnormalities in the battery while the vehicle is parked. The software update was developed as a fail safe countermeasure as they continued their investigation
In February 2021 Hyundai became aware of a Kona EV. with the updated software. that caught fire while at full state of charge. Further investigation into the cause found an internal short within the battery cells caused by a folded Anode tab could result in Lithium plating on the Anode tab to contact and short circuit to the Cathode. Based on this information a safety campaign will be conducted to replace the Battery System Assembly (BSA)
Once parts are available, dealers will replace the Battery System Assembly (BSA). Owners are advised to park their vehicles outside and away from structures until the recall is complete. The recall is expected to begin end of April. Hyundai’s number for this recall is 200 and the NHTSA campaign number is 21V-127.