Possible causes of jerking when shifting the automatic transmission into 2nd and 3rd gears:
1. Low transmission fluid level
* Check the fluid level with the engine running and the gear selector in the ‘Park’ position.
*Add fluid if the level is low.
2. Contaminated transmission fluid
*Transmission fluid should be changed according to service intervals.
* Contaminated fluid can cause jerking and slipping of gears.
3. Worn friction discs
*These discs are located inside the transmission and wear out over time, which can cause jerking.
4. Faulty shift solenoid
* Solenoids change gears and a malfunction can result in harsh shifts.
5. Problems with automatic transmission electronics
* The sensors or transmission control module may have faults that affect gear shifting.
6. Mechanical problems
* Problems with gears, shafts or other mechanical components can cause jerking.
Diagnostics and repair:
* Check the level and cleanliness of the transmission fluid.
* Use a trouble code scanner to identify any problems with the automatic transmission electronics.
* Check friction discs for wear and solenoids for malfunctions.
* Repair or replace faulty components as necessary.
Important: Do not ignore shifting jerks as this can lead to more serious transmission problems. Schedule diagnostics and repairs at an auto repair shop as soon as possible.