What is the purpose of the L gear in an automatic transmission?

[AubreyLynn]

Automatic transmission L gear is the low gear. The following is a detailed introduction about the L gear in automatic transmission: 1. When going downhill or descending a long slope, it can limit the car's gear to automatically stay in the lowest gear, allowing the car to use engine power for braking when going downhill. This prevents the driver from having to press the brake for a long time, which could overheat the brake pads and cause danger. 2. The English word for L gear is 'low,' meaning low speed or slow speed, so the L gear is a low-speed forward gear. Generally, L gear is only found in mid-to-low-end automatic transmission models because these models' automatic transmissions do not have a manual mode. 3. When in L gear, the transmission is in 1st or 2nd gear, giving the vehicle strong torque but relatively low speed. Therefore, the high torque of the L gear can be used to climb steep slopes, while the low speed of the L gear can be utilized for descending long slopes.