US investigating GM Cadillac Lyriq EVs over brake assist failures
The NHTSA's preliminary evaluation is looking into Lyriqs from the 2023 model year
The U.S. National Highway Traffic Safety Administration (NHTSA) announced Monday that its investigative division has launched a preliminary evaluation after receiving multiple reports of Cadillac Lyriq electric vehicles losing their brake boost assist functions.
A Cadillac Lyriq electric vehicle (EV) under General Motors is seen during its world premiere on a media day for the Auto Shanghai show in Shanghai, China April 19, 2021. (REUTERS/Aly Song / Reuters Photos)
The agency's notice said the field reports allege Lyriqs from the 2023 model year have had instances of a hard brake pedal, followed by a "Brake System Failure" message at start up or while driving.
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The agency said General Motors, which owns Cadillac, acknowledged that the electronic brake control module known as "eBoost" has an internal spindle that can fracture during an Anti-Lock Braking System (ABS) event.
The General Motors world headquarters office is seen at Detroit's Renaissance Center. (Paul Hennessy/SOPA Images/LightRocket via Getty Images / Getty Images)
ABS prevents the wheels from locking brakes and slipping when applied, further reducing the risk of an accident.
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Due to the spindle fracture, the vehicles can lose brake assist, experience speed limitation, and ABS would lose some functionality, GM said per the NHTSA report.
GM did not immediately respond to FOX Business' request for comment.
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GM has not issued a recall for the 3,322 vehicles impacted, but has readied an over-the-air update, which will alert drivers if the spindle fractures, the NHTSA said.
Reuters contributed to this report.