Possible causes of jerking when changing gears of an automatic transmission on a Hyundai Solaris:
1. Low level or contamination of transmission fluid:
* Check the level and condition of the ATF fluid.
* Replace fluid and filter if necessary.
2. Faulty shift solenoids:
* Solenoids control ATF flow and provide smooth shifting.
* Faulty solenoids can cause jerky shifting.
3. Worn or damaged transmission components:
* Worn friction discs, gears or bearings can cause shifting to feel jerky.
*Transmission may need repair or replacement.
4. Faulty torque converter:
* The torque converter is the clutch that transmits torque from the engine to the gearbox.
* A faulty torque converter can cause jerking when shifting.
5. Faulty vehicle speed sensor:
* If the sensor does not provide an accurate reading of vehicle speed, it may cause the transmission to malfunction and jerk.
6. Wiring or software problems:
* Faulty wiring or software problems can affect transmission performance and cause jerking.
7. Incorrect driving mode:
*Sharp acceleration or deceleration may increase jerking when changing gears.
Recommendations:
* Visit a car service to diagnose and fix the problem.
* Do not ignore jerking as it may indicate a serious problem.
* Maintain your transmission regularly by changing the fluid and filters according to the manufacturer’s recommendations.
* Avoid harsh driving to extend transmission life.