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What does the D in automatic transmission mean?

2 Answers

AdelineLee

07/29/25 4:57am

Automatic transmission D gear refers to the normal driving gear, which is the most commonly used gear. The following are precautions for use: 1. Automatic transmission vehicles can only be started in P or N gear. To remove the P gear, you must step on the brake. You can first step on the brake, shift the gear to N, then start the engine, push the gear to D, and the car can move forward. 2. Do not shift into N gear while driving to coast. If the car is shifted into N gear to coast, the oil pump will not be able to supply oil normally, and lubrication will be impossible, causing the temperature of the internal components of the transmission to rise, which will cause serious damage to the transmission. 3. After the car is parked and the engine is turned off, you must shift into P gear before pulling out the key. The correct parking steps for an automatic transmission are: step on the brake - shift to N gear - pull the handbrake - turn off the engine - shift to P gear, but many people directly push the gear to P. 4. While moving, do not push the gear into P gear. This is a very dangerous action that can cause serious traffic accidents.

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DiAustin

08/12/25 6:06pm

D gear in an automatic transmission vehicle means Drive, the forward gear. I usually start driving by shifting to D position, and the system automatically shifts between 1st and the highest gear to adapt to road conditions. For example, in city traffic jams, it shifts slowly for smooth acceleration; during highway cruising acceleration, it downshifts to boost power. It also saves fuel. An operational reminder: always shift to P gear when parking, not leaving it in D, to avoid damaging the transmission. Regular maintenance can extend its lifespan and ensure the D gear works properly.

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