What is the purpose of that button on the automatic transmission?
2 Answers
The button on the automatic transmission gear lever is the gear lock, also known as the lock button. The function of the lock button: The lock button not only prevents the driver from shifting gears by mistake, but also protects the car's transmission. When changing gears, this button must be pressed to shift. The most important reason for setting this button in automatic transmission cars is to prevent the driver from mistakenly shifting gears while driving, thereby protecting the safety of the driver and passengers and avoiding traffic accidents caused by operational errors. This button also protects the car's transmission, preventing damage to the transmission gears during gear changes, and can provide a certain level of protection to the transmission, extending its service life. Gear positions of automatic transmission cars: Generally, automatic transmission cars have six gear positions, arranged from top to bottom as P, R, N, D, S, and L. Driving an automatic transmission car using only the parking gear P, reverse gear R, neutral gear N, and drive gear D can fully meet the needs of general driving. However, in some special driving environments, the other functional gears may be required. Therefore, if the correct control method is chosen, automatic transmission cars can perform better than manual transmission cars.
Speaking of that button on the automatic transmission, I've been driving for over a decade and often use it to adjust gear shifts. This button typically controls the overdrive gear—it's that small one next to the gear lever. When encountering uphill roads or driving fully loaded, pressing it increases the engine RPM, providing more power and smoother driving, preventing the car from struggling. I also habitually press it when overtaking on highways, as it makes the car respond faster. However, frequent use has taught me to be cautious: fuel consumption increases slightly when the button is engaged, and it's best not to press it unnecessarily in congested urban areas to avoid excessive gear shifts and transmission wear. In short, it's a handy little tool that every automatic transmission owner should try. Once you get used to it, it can reduce jerky acceleration and make driving more comfortable. Remember to check your car's condition regularly—if the button stops responding, it might be an electrical issue, so don't wait for problems to arise before regretting it.
