2023-06-19 20:15:46
US auto safety regulators are investigating nearly 40,000 Hyundai Ioniq 5 electric vehicles for reports of loss of power while driving due to a battery charging issue.
The National Highway Traffic Safety Administration’s preliminary investigation covers 2022 model year vehicles after receiving 30 consumer complaints alleging a loss of acceleration.
The agency said many consumers reported a loud bang followed by a warning on their dash and immediately experienced a loss of power ranging from reduced throttle to a complete stall.
NHTSA said it has learned from Hyundai that the fault is related to the Integrated Charge Control Unit (ICCU) responsible for powering both the main electric vehicle and the low-voltage 12-volt batteries.
A preliminary review indicates that too much current inside the unit can damage the transistors, resulting in the inability to recharge the 12V battery, the NHTSA said.
Hyundai said on Monday that it will launch a service campaign in July that will update the affected vehicles’ software and replace the ICCU if necessary.
“We value our cooperative relationship with NHTSA and have engaged in frequent, open and transparent dialogue with the agency on this issue,” the Korean automaker said, adding that it is cooperating fully.
NHTSA conducted several interviews with homeowners who confirmed a range of power loss and different time intervals between the warning message and power loss, but did not report any accidents or injuries related to the issue.
One complaint reported that a driver was traveling 75 miles (120 km) per hour on a highway using advanced roadside assistance and “the car became completely unresponsive.”
The driver added that there was a semi-trailer behind him “and one to my right in the slow lane. The car stopped accelerating and I couldn’t keep driving. I was forced to stop on the side of the road.”
According to another complaint in February, a driver on a highway in Santa Maria, California, heard a loud bang coming from my car and “within a few seconds my car lost speed rapidly, from 55 mph to 25 and then a second later to 22 mph”.
Fountain; Archyde.com
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