Mercedes Jerks When Changing Gears (W223, 9G-Tronic): Case Study, Diagnosis & Fix A smooth-shifting 9G-Tronic is central to the S-Class experience. When a jerk during gear changes appears, it’s a sign that hydraulic control, fluid condition, or cooling integrity may ...
Automatic Transmission Oil Change: Interval, DIY Steps & Cost (Mercedes-Friendly Guide) Why This Matters Overheating and fluid contamination cause most AT failures industry data suggests up to ~90% of failures stem from poor fluid condition. Fresh ATF maintains hydraulic pressure, ...