Possible causes of kicks in the transmission of the Mercedes-Benz 124 automatic transmission:
1. Low automatic transmission fluid level:
* Insufficient fluid leads to overheating and loss of pressure, which can cause kicking.
2. Contaminated automatic transmission fluid:
* Dirty fluid contains impurities that clog the solenoids and valve body, preventing smooth gear shifting.
3. Faulty solenoids:
* Solenoids regulate automatic transmission fluid pressure and control gear shifting. Their malfunction can lead to abrupt switching.
4. Faulty valve body:
* The valve body is the brain of the automatic transmission and controls the flow of fluid. If it malfunctions, it can cause a wide range of shifting problems, including kicking.
5. Worn clutches:
* Clutches connect the gears in an automatic transmission. Their wear can cause the gears to slip or engage harshly.
6. Faulty torque converter:
* The torque converter transfers power from the engine to the automatic transmission. Its malfunction can cause vibration and shock when changing gears.
7. Problems with the electronic control unit (ECU):
* The ECU controls the operation of the automatic transmission. Its malfunction can lead to incorrect operation of the transmission.
8. Failure of mechanical components of the automatic transmission:
*Serious mechanical problems such as worn gears or damage to internal components can cause kicking and other shifting problems.
9. Problems with the secondary motor shaft:
* Worn or damaged secondary motor shaft can cause shifting problems and kicking.
10. Electromagnetic interference:
* In some cases, electromagnetic interference from other vehicle components (for example, an alternator or high-voltage wires) can disrupt the operation of the automatic transmission ECU, resulting in kicking.