Transmission problems:
- Low transmission fluid: Check the fluid level of the transmission and make sure it's at the appropriate level. Insufficient fluid can cause slipping gears and difficulty in moving.
- Worn-out clutches or bands: The transmission may have worn-out clutch plates or bands, causing them to slip and preventing the vehicle from moving when put into gear.
- Faulty transmission sensors: Faulty sensors such as the speed sensor or shift position sensor can provide incorrect input to the transmission control unit (TCU), leading to shifting issues.
Shifter cable/ linkage issues:
- Stuck shifter cable: The cable connecting the shift knob to the transmission may have become stuck, preventing the transmission from shifting gears.
- Broken shifter linkage: The mechanical linkages between the shift knob and transmission may have become broken or disconnected, causing the shift knob to not move and preventing gear selection.
Electronic control issues:
- TCU malfunction: The transmission control unit (TCU) is responsible for managing the shifting process. A faulty TCU can lead to incorrect shifting or failure to shift gears.
- Faulty wiring: Worn-out or damaged wiring related to the transmission system can disrupt communication between components and cause shifting issues.
Other mechanical issues:
- Driveshaft problems: A damaged driveshaft or worn-out CV joint can cause a lack of power transmission from the engine to the wheels, preventing the vehicle from moving.
- Differential issues: A faulty differential can cause power distribution issues to the wheels, resulting in the inability to move.
Since diagnosing the exact cause requires physical inspection and testing, it's recommended to have your vehicle inspected by a qualified mechanic or a trusted automotive repair shop to identify the specific issue and recommend appropriate repairs.
