Harsh Engagement Possibly Followed by Droning:Buzzing Noises During Light Acceleration Between E PDF

A service bulletin addressing issues of harsh engagement or buzzing noises during light acceleration in certain Mercedes-Benz models. The document includes detailed instructions for identifying and resolving these issues, including guidelines for performing specific tests. It features images illustrating the old and new methods for handling engine control units, as well as instructions for conducting glycol tests to diagnose the problem. Parts information is provided for necessary repairs, and warranty claim procedures are outlined.