Hi together, I have a G500 (2009), which for some time only reacted delayed to the accelerator pedal and felt no rich train on the way. It also switches delayed at speeds of up to 2500 rpm. In the past the response behavior was very direct and the acceleration quite linear. What could this be about? For about a similar time a speed-dependent Surren (between 1000 and 2000 rpm) can be heard from the engine compartment. Grades was therefore replaced the servo pump, the Surren is But still there. The guys from Mercedes are baffled. Does any of you have any idea what that might be about? Thank you very much.