U.S. Investigates Brake Issue: 3,322 GM Cadillac Lyriq EVs Under Scrutiny
The U.S. National Highway Traffic Safety Administration (NHTSA) has initiated a preliminary evaluation of reports of brake assist loss affecting 3,322 Cadillac Lyriq electric vehicles manufactured by G.M. for the 2023 model year. According to NHTSA, drivers have encountered a hard brake pedal and received a “Brake System Failure” message upon start-up or while driving.
G.M. has provided insight into the issue, explaining that the electronic brake control module contains an internal spindle that may fracture during an anti-lock braking system (ABS) event. ABS is designed to prevent the wheels from locking during braking, reducing the risk of accidents. However, due to the spindle fracture, affected vehicles may experience a loss of brake assist, speed limitations, and diminished ABS functionality.
To address the concern, G.M. has developed an over-the-air update to notify drivers if the spindle fractures. The company emphasized that this issue is “sporadic” and mentioned that it had conducted two previous investigations regarding the same concern on the 2023 model year Cadillac Lyrics. Additionally, G.M. assured that the Cadillac Lyriq meets all federal brake system performance requirements, even if brake assist is disabled.
The NHTSA’s preliminary evaluation aims to further investigate the reported brake assist loss and ensure the safety of Cadillac Lyriq owners.
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