Mercedes-Benz USA (MBUSA) is recalling ~3000 2023-2024 model year AMG GT 63 S E Performance 4-door coupes, 2025 AMG GLC 63 S E Performance, GLC 63 S E Performance Coupes, AMG GT 63 S E Performance, 2023-2025 AMG S 63 E Performance, and 2024-2025 AMG SL 63 S E Performance vehicles with a hybrid powertrain. A software error may cause the high-voltage starter alternator control unit to fail, causing a loss of drive power.
In the required filing with the National Highway Traffic Safety Administration made public by NHTSA today MBUSA said: “Vehicles with a hybrid powertrain, the control unit for the high-voltage starter alternator might experience sporadic processor overload As a consequence, the monitoring function in the high-voltage starter alternator system might erroneously detect a component fault. In this case, the function of the high-voltage starter alternator could deactivate. This could lead to an unexpected loss of propulsion, which could increase the risk of crash.
“Before the issue occurs, the driver will not receive a warning due to the nature of the failure mechanism. When the issue occurs, the driver might notice several warning messages in the instrument cluster,” MBUSA said
Dealers will update the high-voltage starter alternator control unit software, free of charge as required by U.S. Safety Defect Recall regulations. Owner notification letters are not expected to be mailed until 29 April 2025. Owners may contact MBUSA customer service at 1-800-367-6372. Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 888-327-4236 or go to nhtsa.gov about NHTSA 25V129 or 25V-129,
About Ken Zino
Ken Zino, publisher (kzhw@aol.com), is a versatile auto industry participant with global experience spanning decades in print and broadcast journalism, as well as social media. He has automobile testing, marketing, public relations and communications experience. He is past president of The International Motor Press Assn, the Detroit Press Club, founding member and first President of the Automotive Press Assn. He is a member of APA, IMPA and the Midwest Automotive Press Assn.
Zino is at home on test tracks, knows his way around U.S. Congressional hearing rooms, auto company headquarters, plant floors, as well as industry research and development labs where the real mobility work is done. He can quote from court decisions, refer to instrumented road tests, analyze financial results, and profile executive personalities and corporate cultures.
He also brings an historical perspective while citing their contemporary relevance of the work of legendary auto writers such as Ken Purdy, Jim Dunne or Jerry Flint, or writers such as Red Smith, Mark Twain, Thomas Jefferson – all to bring perspective to a chaotic automotive universe.
Above all, decades after he first drove a car, Zino still revels in the sound of the exhaust as the throttle is blipped and the driver’s rush that occurs when the entry, apex and exit points of a turn are smoothly and swiftly crossed. It’s the beginning of a perfect lap.
AutoInformed has an editorial philosophy that loves transportation machines of all kinds while promoting critical thinking about the future use of cars and trucks.
Zino builds AutoInformed from his background in automotive journalism starting at Hearst Publishing in New York City on Motor and MotorTech Magazines and car testing where he reviewed hundreds of vehicles in his decade-long stint as the Detroit Bureau Chief of Road & Track magazine. Zino has also worked in Europe, and Asia – now the largest automotive market in the world with China at its center.
Mercedes-Benz USA Recalling AMG Hybrid Electric Vehicles
Mercedes-Benz USA (MBUSA) is recalling ~3000 2023-2024 model year AMG GT 63 S E Performance 4-door coupes, 2025 AMG GLC 63 S E Performance, GLC 63 S E Performance Coupes, AMG GT 63 S E Performance, 2023-2025 AMG S 63 E Performance, and 2024-2025 AMG SL 63 S E Performance vehicles with a hybrid powertrain. A software error may cause the high-voltage starter alternator control unit to fail, causing a loss of drive power.
In the required filing with the National Highway Traffic Safety Administration made public by NHTSA today MBUSA said: “Vehicles with a hybrid powertrain, the control unit for the high-voltage starter alternator might experience sporadic processor overload As a consequence, the monitoring function in the high-voltage starter alternator system might erroneously detect a component fault. In this case, the function of the high-voltage starter alternator could deactivate. This could lead to an unexpected loss of propulsion, which could increase the risk of crash.
“Before the issue occurs, the driver will not receive a warning due to the nature of the failure mechanism. When the issue occurs, the driver might notice several warning messages in the instrument cluster,” MBUSA said
Dealers will update the high-voltage starter alternator control unit software, free of charge as required by U.S. Safety Defect Recall regulations. Owner notification letters are not expected to be mailed until 29 April 2025. Owners may contact MBUSA customer service at 1-800-367-6372. Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 888-327-4236 or go to nhtsa.gov about NHTSA 25V129 or 25V-129,
About Ken Zino
Ken Zino, publisher (kzhw@aol.com), is a versatile auto industry participant with global experience spanning decades in print and broadcast journalism, as well as social media. He has automobile testing, marketing, public relations and communications experience. He is past president of The International Motor Press Assn, the Detroit Press Club, founding member and first President of the Automotive Press Assn. He is a member of APA, IMPA and the Midwest Automotive Press Assn. Zino is at home on test tracks, knows his way around U.S. Congressional hearing rooms, auto company headquarters, plant floors, as well as industry research and development labs where the real mobility work is done. He can quote from court decisions, refer to instrumented road tests, analyze financial results, and profile executive personalities and corporate cultures. He also brings an historical perspective while citing their contemporary relevance of the work of legendary auto writers such as Ken Purdy, Jim Dunne or Jerry Flint, or writers such as Red Smith, Mark Twain, Thomas Jefferson – all to bring perspective to a chaotic automotive universe. Above all, decades after he first drove a car, Zino still revels in the sound of the exhaust as the throttle is blipped and the driver’s rush that occurs when the entry, apex and exit points of a turn are smoothly and swiftly crossed. It’s the beginning of a perfect lap. AutoInformed has an editorial philosophy that loves transportation machines of all kinds while promoting critical thinking about the future use of cars and trucks. Zino builds AutoInformed from his background in automotive journalism starting at Hearst Publishing in New York City on Motor and MotorTech Magazines and car testing where he reviewed hundreds of vehicles in his decade-long stint as the Detroit Bureau Chief of Road & Track magazine. Zino has also worked in Europe, and Asia – now the largest automotive market in the world with China at its center.