Possible causes of shocks when shifting gears in a Toyota automatic transmission:
Mechanical problems:
* Worn or faulty friction discs
* Faulty solenoid valves
*Low transmission fluid level
* Torque converter problems
Electrical problems:
* Faulty speed sensors
* Faulty control solenoids
* Faulty Transmission Control Module (TCM)
Software problems:
* Outdated TCM software
* Incorrectly configured TCM software
Other reasons:
* Contaminated transmission fluid
* Clogged automatic transmission oil filter
* Worn rubber engine and transmission mounts
* Incorrect gear shifting by the driver
Diagnosis and solution to the problem:
To diagnose the exact cause of the tremors, the following steps must be taken:
*Checking the transmission fluid level
* Scan fault codes
* Checking the pressure in the automatic transmission
* Visual inspection of the automatic transmission for leaks or damage
* Checking electrical connectors and wiring
Depending on the cause of the shocks, the following repair work must be performed:
* Replacement of friction discs, solenoid valves or torque converter
* Repair or replacement of electrical components (sensors, solenoids, TCM)
* Updating or setting TCM software
* Replacement of transmission fluid and oil filter
* Replacement of rubber engine and transmission mounts
*Transmission training (if required)
Important Notes:
* Do not ignore the shock when shifting gears, as this may cause further damage to the automatic transmission.
* Maintain your transmission according to the manufacturer’s recommendations, including regularly changing the transmission fluid and filter.
* If you experience shaking, take it to a qualified mechanic for diagnosis and repair.