The recall covers a total of 79,676 vehicles, according to the National Highway Traffic Safety Administration (NHTSA). Affected vehicles include certain model years from 2021 to 2024, such as the GLE, GLS, C-Class, E-Class, S-Class, SL, E-Class Coupe, E-Class Convertible, CLS, AMG GT 4-Door Coupe and G-Class models, all manufactured between August 1, 2021 and March 31, 2023.
The German company first became aware of a potential issue in early June 2022, when field reports outside the U.S. alleged inconsistent power delivery in certain Mercedes-Benz models. The company hypothesized that the fuel pump function may have been compromised, and after a six-month investigation, discovered an irregularity in individual batches of raw material used for suspect fuel pump impellers sourced from a supplier.
The recall notice reveals that the impeller could deform because it fails to meet specifications and may come into contact with the fuel pump housing, “leading to a mechanical resistance.” This could cause the fuel pump to shut down and the vehicle may lose propulsion, potentially increasing the risk of crash or injury. Owners of affected vehicles may experience rough engine operation or a warning message on the instrument cluster before the fuel pump shuts off.
Dealers were notified of the recall on December 28, 2023, and owners will be notified by February 13, 2024. Mercedes-Benz has instructed dealers to replace the fuel delivery module on affected vehicles free of charge. The automaker added that a change in the production process at the supplier of the fuel pump will prevent the problem from occurring after April 3, 2023.
Source: Carscoops
