Possible reasons for the automatic transmission twitching on SsangYong:
1. Low transmission fluid level:
* Check the level and condition of the fluid in the gearbox. If necessary, add or replace fluid.
2. Dirty transmission fluid filter:
* A dirty filter can restrict fluid flow, causing jerking. Replace the filter.
3. Worn clutch packs:
* Worn packs can cause slipping and jerking when shifting. The clutch packs need to be replaced.
4. Faulty solenoid:
* Solenoids control the flow of transmission fluid in the transmission. A faulty solenoid can cause jerking when shifting gears.
5. Faulty speed sensor:
* The speed sensor provides input and output shaft speed information to the transmission control unit (TCU). A faulty sensor can distort the data, resulting in incorrect gear shifting.
6. Faulty Transmission Control Unit (TCU):
* The TCU controls all transmission functions, including gear shifting. A faulty TCU can cause the transmission to jerk.
7. Mechanical faults:
* Worn gears, bearings or shafts can lead to mechanical problems that manifest as jerking.
What to do:
1. Check the level and condition of the transmission fluid.
2. Replace the transmission fluid filter.
3. Consult a qualified mechanic to diagnose and repair any other possible problems.