What Causes an Automatic Transmission Car to Not Move When Suddenly Shifted to D Gear?

1 Answers
LeMaya
07/29/25 3:30pm
Automatic transmission car suddenly not moving when shifted to D gear could be due to: 1. Handbrake not released; 2. Gear position sensor malfunction preventing detection of current gear; 3. Insufficient transmission fluid level hindering effective power transfer; 4. Possibly the brake not being released or locked, preventing movement. The D gear, also known as the drive gear, activates corresponding forward gear hydraulic circuits automatically based on throttle opening and vehicle speed signals when the gearshift lever is in this position. Automatic transmission refers to the car's automatic gear-shifting mechanism, where the transmission control system selects the appropriate gear based on engine speed and load, replacing the driver's subjective judgment and manual gear-shifting operations.
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