Mechanical problems
* Worn or damaged clutches
* Transmission fluid clogged or leaking
* Dirty or clogged oil filter
*Damaged or worn shift belt
* Problems with the gear shift position sensor
* Faulty gear shift solenoids
Electrical problems
* Problems with wiring or connectors
*Transmission control module (TCM) malfunction
* Problems with gear shifter
Software problems
* Outdated TCM software
* Incorrect calibration settings
Other Possible Causes
* Worn or damaged torque converter
*Low transmission fluid level
* Clogged transmission cooler
* Vehicle overload
* Driving with wheels sliding
Factors contributing to long switchovers
* Aggressive driving style
* Frequent towing or driving with heavy loads
* Late maintenance
*Using low-quality transmission fluid