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A service bulletin that addresses issues with Mercedes-Benz models due to droning or buzzing noises during light acceleration. It details the affected vehicles by model and production period, offering a thorough explanation of the problem's cause related to glycol contamination. Included are step-by-step instructions for a glycol test and repair procedures, supplemented by images illustrating parts and testing methodologies. It combines technical diagrams, photos, and procedural documentation to guide automotive technicians in remedying transmission fluid contamination.