What is the situation when an automatic transmission car cannot shift gears?

[Shaun]

Here are the specific reasons and solutions for an automatic transmission car not being able to shift gears: 1. Internal failure of the gear shift lever assembly. Solution: Repair the gear shift lever assembly. 2. Failure of the P-gear lock solenoid valve inside the gear shift lever and failure of the brake switch. Solution: Repair the solenoid valve and brake switch. Here are some additional information: 1. Looking down at the gear lever while shifting. 2. Driving in low gear for a long time. High gear is more fuel-efficient than low gear. Therefore, you should shift up in time after starting. 3. The clutch pedal is not fully depressed when shifting, causing gear damage. In addition, when the clutch is not in use, the foot should not be placed on the clutch, as this will cause excessive wear of the release bearing. 4. The direction deviates when shifting. 5. Forcing the gear lever when it cannot shift at once. 6. Shaking the gear lever back and forth when it is in neutral. This can cause unnecessary wear of parts and affect the timing of shifting. 7. Skipping gears when shifting up. Shifting up should be done step by step to prevent the car's power from being discontinuous, while shifting down can skip gears. 8. Engaging reverse gear before the car comes to a complete stop. This can easily cause gear damage.