What does the minus sign on an automatic transmission mean?

[AdrielAnn]

The plus and minus signs on an automatic transmission indicate the manual mode. In manual mode, the driver can manually shift up or down, similar to driving a manual transmission vehicle. The car will not automatically shift gears, and these symbols are typically only found on automatic transmissions with manual mode. How to use it: To use it, simply push the lever up or down. Common gears on an automatic transmission: Automatic transmission generally refers to the car's automatic gear-shifting mechanism. While driving, the automatic transmission's control system selects the appropriate gear based on the engine's speed and load, replacing the driver's subjective judgment and gear-shifting operations. A typical automatic transmission car has six gears, from top to bottom: P, R, N, D, S, L. Key points for shifting gears in an automatic transmission: When shifting between gears other than D and S, you need to first press the brake, then move the gear lever to the desired gear, and finally release the brake to complete the gear shift.

[NaomiLynn]

I've been driving an automatic transmission car for several years, and that minus sign is actually the manual downshift function. Normally, you can just stay in D (Drive) gear while driving, but when encountering uphill climbs or wanting to overtake, switch to manual mode (usually marked with M or S on the gear lever), then press the minus button to downshift and give the engine more power, making acceleration faster and easier. For example, when climbing a steep hill and lacking power, a quick press on the minus button gives an immediate response, without the hassle of stepping on the clutch like in a manual transmission. However, remember not to hold it down continuously, as excessively high RPMs can waste fuel or damage the engine. It's safer to mostly use D gear in daily driving.

[StevenFitz]

I often help friends with car repairs, and when talking about the minus sign on the automatic transmission, I would say it's the manual mode downshift button. There's a small button with a minus sign near the gear lever or steering wheel. When you press it, it manually lowers the gear to increase torque, which is suitable for low-speed climbing or preventing slippage. It corresponds to the plus sign used for upshifting to balance speed. Many car owners overlook it, but it's very useful, such as downshifting to prevent tire spin when starting on slippery roads in the rain, making it safer. It's recommended to regularly check the transmission fluid to prevent this mechanism from getting stuck and avoid accidents while driving.

[LeEmilio]

I just learned how to drive not long ago and was curious why there's a minus sign on the gear shift. After asking experienced drivers, I found out that in manual mode, you can downshift by pressing it, such as when going down a steep slope, which helps slow down the car, reduces brake usage, and extends their lifespan. New cars usually have this feature, though not all vehicles need it, but it gives you more control. Remember not to use it randomly on highways—it's only suitable for specific scenarios. You'll understand it better as you gradually get used to it.