Reason for jerking when switching automatic transmission in Mercedes:
* Low or contaminated transmission fluid: When fluid levels are low or contaminated, it cannot properly lubricate and cool transmission components, resulting in increased friction and jerking.
* Worn friction linings: Friction linings in automatic transmissions wear out over time, reducing their ability to shift smoothly.
* Faulty Shift Solenoid: Shift solenoids activate and deactivate the friction linings to control fluid flow. A faulty solenoid can result in harsh shifting or slippage.
* Contamination of the valve body: The valve body controls the flow of fluid into the automatic transmission. Contamination can block or restrict fluid flow, causing jerking.
* Software problems: The automatic transmission computer controls the timing of gear shifts. Software problems can result in incorrect shift points and jerking.
* Worn bushings and bearings: Bushings and bearings support rotating components in an automatic transmission. Their wear can lead to vibration and jerking.
* Faulty torque converter: The torque converter transfers power from the engine to the automatic transmission. A faulty torque converter can cause vibration and jerking.
Remedy:
* Check the level and condition of the transmission fluid. Replace fluid and filter if necessary.
* If the friction linings are worn out, a major overhaul of the automatic transmission will be required.
* Diagnose and replace faulty shift solenoids.
* Wash the valve body to remove dirt.
*Update your automatic transmission software if updates are available.
* Replace worn bushings and bearings.
* If necessary, repair or replace the torque converter.