Hyundai Ioniq 5 Power Loss Claims Being Investigated by NHTSA

The National Highway Traffic Safety Administration (NHTSA) has launched an investigation into the 2022 Hyundai Ioniq 5, following over two dozen consumer complaints regarding a loss of motive power in the electric compact crossover.

The NHTSA’s Office of Defects Investigation has received 30 complaints from U.S. vehicle owners, many of whom reported hearing a “loud pop noise” followed by a dashboard warning, and then experienced a reduced or total loss of motive power.

The investigation, currently in its preliminary evaluation stage, aims to assess the scope and severity of the potential safety defect, which could affect more than 39,500 Ioniq 5 EVs, reports Automotive News.

Hyundai has informed NHTSA investigators that the issue is related to the Integrated Control Charging Unit (ICCU) that powers the vehicle batteries. An initial review suggested that overcurrent within the charging unit can damage transistors, preventing the 12-volt battery from recharging.

Hyundai spokesperson Michael Stewart stated that the automaker is “fully cooperating” with the investigation and plans to launch a service campaign in July to update the affected vehicle’s software and replace the ICCU if necessary.

The Ioniq 5 is Hyundai’s first dedicated electric offering, replacing the now discontinued Ioniq EV in the lineup. Hyundai has sold more than 10,500 units of the popular compact crossover this year, according to Automotive News data.

Some of the complaints submitted to NHTSA include instances of the vehicle unexpectedly slowing down and becoming unresponsive, even when traveling at high speeds on major highways. These incidents highlight the potential safety risks associated with the alleged defect.

The NHTSA investigation process typically starts with preliminary evaluations, during which agency engineers request information from the manufacturer, including data on complaints, injuries, and warranty claims. The manufacturer can also present its view regarding the alleged defect and may issue a recall.

After the evaluation, NHTSA will either close the investigation or move into the next phase, which could involve sending a “recall request” letter to the manufacturer if a safety-related defect exists.