Why Can't the Automatic Transmission Gear Be Engaged?

2 Answers
VanLincoln
07/29/25 7:13am
The reasons why the automatic transmission gear cannot be engaged are: 1. Internal failure of the gearshift assembly; 2. Malfunction of the internal control module of the transmission; 3. Failure of the transmission gear position switch. An automatic transmission does not require the driver to manually shift gears; the vehicle will automatically select the appropriate gear based on the driving speed and traffic conditions. The steps to start an automatic transmission vehicle are: 1. After the driver sits in the driver's seat, press the start button directly; 2. Depress the brake pedal and press the start button to ignite and start the engine; 3. Release the foot brake and let the vehicle warm up in place; 4. Depress the brake pedal again and shift to D gear; 5. Release the handbrake and slowly release the foot brake to start the vehicle.
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VanAlexander
08/12/25 10:33am
I've encountered the issue of not being able to shift gears in an automatic transmission several times, especially when trying to shift into Drive (D) after starting the car but getting stuck. The main reason might be that you didn't press the brake pedal all the way down, triggering the automatic transmission's safety mechanism that locks the shifting function. It could also be due to debris stuck in the shift lever or a faulty solenoid valve preventing signals from reaching the transmission. Once, my own car didn't respond because the key wasn't turned to the start position. If this happens while driving, don't force the gear shift; immediately pull over and use the emergency mode or park to avoid damaging the transmission. It's advisable to first check if the brake pedal is functioning smoothly and try restarting the car. If the problem persists, consult a professional technician to diagnose potential issues with the oil circuit or electrical system to prevent minor problems from escalating into major faults.
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