General automatic transmission breakdowns:
* Gear Slipping: The transmission cannot effectively transfer power to the wheels, causing loss of traction or jerking.
*Hard shifting: The transmission shifts noticeably from one gear to another, causing vibration or jolting.
* Gear Shift Delay: The transmission does not shift to the next gear at the proper time, resulting in loss of performance.
* Speed Fluctuation: Engine speed fluctuates while driving, even at a stable speed.
*Transmission Fluid Leak: Transmission fluid leaks cause low fluid levels, which can cause component damage.
Mechanical failures:
*Friction Disc Wear: The friction discs inside the transmission wear out over time, causing the gears to slip.
* Planetary Gearbox Failure: Planetary gearbox gears and components can wear out or break, causing various shifting problems.
* Emergency Mode: In the event of severe mechanical problems, the transmission will go into emergency mode to prevent further damage.
* Torque Converter Failure: The torque converter that connects the engine and transmission can fail, causing gears to slip or shift harshly.
Electrical breakdowns:
* Gear selector position sensor malfunction: The sensor detects the position of the gear selector and transmits information to the transmission control module. Its malfunction can lead to incorrect gear shifting.
* Malfunctioning Solenoids: Solenoids control the flow of fluid in the transmission, regulating gear shifting. Their malfunction can cause problems with gear shifting.
* Transmission Control Module (TCM) malfunction: The TCM monitors transmission operation. If it malfunctions, it can cause various problems, including unstable gear shifting.
* Faulty wiring harness: The wiring harness connects the electrical components of the transmission. Damage to it can lead to intermittent operation and problems with gear shifting.