Possible causes of vibration when shifting automatic transmissions in Toyota cars:
1. Worn friction packs
* Over time, friction packs in automatic transmissions wear out, which leads to slippage during gear shifts. This may cause vibration.
2. Contaminated or old oil in the automatic transmission
* Contaminated or old oil does not provide adequate lubrication and can cause wear to transmission components. This may cause vibration when shifting gears.
3. Faulty torque converters
* Torque converters are responsible for transferring power from the engine to the transmission. A faulty torque converter can cause vibration when shifting gears.
4. Problems with electrical components
*Electrical components such as solenoids and sensors can affect automatic transmission performance. Faulty components can cause vibration when shifting gears.
5. Faulty engine or transmission mounts
* Faulty mounts can allow the engine or transmission to vibrate, which can be felt inside the cabin.
6. Worn transmission support bearings
*Transmission support bearings support transmission shafts and gears. Worn bearings can create play and vibration when shifting gears.
7. Faulty torque
*Torque is responsible for locking up the torque converter at higher speeds. Improper torque can cause vibration when shifting gears.
8. Problems with the differential
* The differential distributes power between the drive wheels. A faulty differential can cause vibration when shifting gears.
It is recommended to take the following steps:
* Check and replace the automatic transmission oil and filter if necessary.
* Carry out automatic transmission diagnostics at a qualified car service center to identify faulty components.
* Eliminate faults found during diagnostics.