NHTSA probes 3,322 GM Cadillac Lyriq EVs over brake assist concerns

The U.S. National Highway Traffic Safety Administration (NHTSA) has launched a preliminary evaluation into 3,322 GM Cadillac Lyriq electric vehicles following reports of a potential loss of brake assist, the agency announced on Monday.

According to the NHTSA, it has received complaints regarding a hard brake pedal, accompanied by a “Brake System Failure” message appearing either at startup or while driving. The evaluation specifically targets the 2023 model year vehicles.

GM has attributed the issue to a fracture in the electronic brake control module’s internal spindle during an anti-lock braking system (ABS) event, as stated in a NHTSA preliminary evaluation report. The ABS is designed to prevent wheel lock-up and slipping, thus reducing the risk of accidents.

As a result of the spindle fracture, affected vehicles may experience a loss of brake assist, speed limitation, and reduced functionality of the ABS, GM noted in the NHTSA report.

To address the issue, GM has developed an over-the-air update that will alert drivers if the spindle fractures, according to the NHTSA. This update aims to mitigate potential safety risks associated with the brake assist issue.

The NHTSA’s investigation underscores the agency’s commitment to ensuring the safety and reliability of vehicles on U.S. roads.

GM has also pledged to cooperate fully with the NHTSA throughout the evaluation process to resolve the issue promptly and ensure the safety of its customers.

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