Common causes of Volvo automatic transmission failure:
Mechanical faults:
* Wear of friction discs
* Torque converter malfunction
*Damaged gears or shafts
* Fluid leaks from automatic transmission
Electrical faults:
* Faulty automatic transmission control unit (TCU)
* Faulty sensors (such as speed sensor, transmission position sensor)
* Damaged wiring
Improper maintenance:
* Late replacement of automatic transmission fluid and filter
* Automatic transmission overheating
* Towing heavy loads without proper cooling
Software problems:
* Bugs in TCU software
*Incompatible software after update
Other possible reasons:
* Clogged or blocked transmission cooler
* Contaminated or low-quality automatic transmission fluid
* Incorrectly adjusted gear shift cable
* Faulty steering column or accelerator pedal
Factors contributing to automatic transmission malfunction:
* Aggressive driving and harsh gear changes
* Towing heavy loads without proper cooling
* Late maintenance and replacement of automatic transmission fluid
*Using automatic transmission fluid that does not meet manufacturer specifications