star-bulletin-05-20-20b-e63-engine PDF

A service bulletin that addresses sporadic noise issues in certain Mercedes-Benz models with M156 engines. It includes specific instructions regarding camshaft adjusters and valve tappets to address noises during engine start. The document provides detailed remedies and repair procedures, as well as part numbers and special tools required for the repair. It also includes instructions for processing warranty claims related to these issues.