What is the button on the automatic gear lever?
3 Answers
The button on the automatic gear lever is called the gear lock or shift lock button. The functions of the gear lock are as follows: 1. To prevent the driver from shifting gears by mistake. 2. To protect the transmission, prevent damage to the transmission gears, and extend the service life of the transmission. To release the gear lever lock mechanism when using the gear lock, press the brake pedal and hold it down while the ignition switch is on, and simultaneously press the lock button on the gear lever; when shifting quickly through position N (for example, from R to D), the gear lever is not locked. In the following situations, you need to press the gear lock to shift gears: 1. When shifting into R gear. 2. When shifting out of P gear. 3. When shifting into P gear.
The most common button on an automatic gearshift lever is the shift lock button. Every time I drive and shift gears, I have to press it, especially when switching from P to D. This button acts like a safety switch—without pressing it, the gear lever simply won't budge, preventing accidental shifts. For example, even if a child fiddles with the lever at a red light, there's no risk of the car rolling. Nowadays, many cars use electronic parking brakes, but the lock button on the gearshift remains standard, whether in older or newer models. However, note that its position varies by brand—Toyota places it on top, while Ford positions it on the side. Remember to press the brake pedal before pressing the button; otherwise, it won't respond. Occasional malfunctions might be due to a stuck button or wiring issues, requiring prompt repair. Every automatic transmission driver should be familiar with this design.
The button on the automatic gear lever primarily serves as the shift lock mechanism. Having driven over a dozen car models, I've noticed that besides the safety lock button, some gear knobs integrate additional function buttons. For instance, BMW's Sport button is located on the left side of the gear lever—pressing it directly switches to sport mode. Certain Toyota models feature a button on top of the gear knob to toggle manual mode. These extra buttons act like shortcuts, enhancing driving flexibility. Whether it's switching to manual mode to control RPM in snowy conditions or engaging sport mode for extra horsepower when overtaking, these buttons make it possible. In modified cars, I've even seen custom buttons with ambient lighting. However, most standard family cars only include the lock button. It's advisable to test the gear lever button's feel when first driving a car to avoid shifting incorrectly at critical moments.
