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 ...
Mercedes 7G‑Tronic (722.9) 7‑Speed Automatic: Guide, Common Faults & Maintenance Introduced in 2003, the 7G‑Tronic is Mercedes’s first 7-speed automatic gearbox (model 722.9), widely used up to 2020. Known for smooth shifts, improved efficiency, and torque converter lock‑up across all ...