Mercedes-Benz USA has initiated a recall affecting over 10,000 electric and plug-in hybrid vehicles across 14 distinct models sold in the U.S. market, citing a critical software anomaly within the electric powertrain control unit that could lead to unexpected propulsion loss. The recall, officially filed with the National Highway Traffic Safety Administration (NHTSA), addresses a defect that may cause a sudden reduction in power or complete loss of drive, significantly increasing the risk of an accident.

The affected models span Mercedes-Benz’s EQ range, including the EQS and EQE sedans, as well as various plug-in hybrid variants of the C-Class, E-Class, S-Class, GLC, and GLE SUVs produced between 2021 and 2024. The core issue stems from a software parameter error that, under specific operating conditions, can misinterpret sensor data, leading the system to prematurely enter a protective mode and limit or cut off power to the electric motor. While no accidents or injuries directly attributable to this specific fault have been widely reported by the company, the potential for sudden vehicle deceleration or immobilization poses a serious safety concern.

Owners of the affected vehicles will be notified by mail to bring their cars to authorized Mercedes-Benz dealerships for a complimentary software update. The fix involves reprogramming the electric powertrain control unit to correct the erroneous parameter, a procedure estimated to take approximately one hour. This proactive measure by Mercedes-Benz underscores the automotive industry’s ongoing efforts to address software-related vulnerabilities in increasingly complex vehicle architectures.

Industry analysts note that software-related recalls are becoming more common as vehicles integrate sophisticated electronic systems and connectivity features. “The complexity of EV powertrains, particularly the intricate interplay between battery management, motor control, and vehicle dynamics software, presents unique challenges for automakers,” stated Alex Chen, a senior analyst at EV Insights Group. “Mercedes-Benz’s swift action, while disruptive, is crucial for maintaining consumer trust in their premium electric offerings and the broader EV segment.”

This recall comes at a time when Mercedes-Benz is heavily investing in its electric vehicle portfolio, aiming for a fully electric lineup in markets where conditions allow by the end of the decade. The incident highlights the critical need for robust validation and over-the-air update capabilities to quickly deploy fixes, minimizing inconvenience for customers and mitigating safety risks across the rapidly evolving EV landscape.