Trans. Down Shifting Problem TSB PDF

A service bulletin detailing the procedure to address an uncomfortable 2-1 downshift issue in certain Mercedes-Benz models while braking or coasting. The document outlines the steps for diagnosis and reprogramming using Star Diagnosis, specifying conditions for replacing the valve body for Model 164.175/186 with information pertinent to the 2006 722.9 NAG2 transmission. Detailed steps for technicians include connecting diagnostic tools, applying tests, and navigating specific software menus. Instructions for submitting warranty claims and producing necessary printouts are also provided.