US opens safety probe into Hyundai Ioniq 5 EVs over power loss reports

The agency said many consumers reported a loud popping noise followed by a warning displayed in their dashboard and immediately experienced a loss of power that ranged from a reduction in acceleration to a complete loss. NHTSA said it learned from Hyundai that the failure is related to the Integrated Charging Control Unit responsible for powering both vehicle batteries.

U.S. auto safety regulators are investigating nearly 40,000 Hyundai Ioniq 5 electric vehicles over reports of power loss that may be tied to a battery charging issue. The National Highway Traffic Safety Administration's preliminary investigation covers 2022 model year vehicles after it received 30 consumer complaints alleging a loss of acceleration. The agency said many consumers reported a loud popping noise followed by a warning displayed in their dashboard and immediately experienced a loss of power that ranged from a reduction in acceleration to a complete loss.

NHTSA said it learned from Hyundai that the failure is related to the Integrated Charging Control Unit responsible for powering both vehicle batteries. A preliminary review indicates too much current within the unit can damage transistors, resulting in the inability to recharge the low-voltage 12V battery, NHTSA said. Hyundai did not immediately comment.