What does the autohold button in a car mean?
2 Answers
The autohold button in a car refers to the automatic parking function. Autohold is an intelligent electronic parking brake of the vehicle, which is a function within the braking system. After the vehicle comes to a stop, it automatically engages the parking brake to ensure safety, and lightly pressing the accelerator will automatically release the parking brake effect. When the vehicle reaches a certain speed and brakes, if the vehicle comes to a complete stop and the brake pedal is held down for 1-2 seconds, the engine will automatically shut off. When the brake pedal is released and the accelerator pedal is pressed, the engine will automatically start again. This function is often used when waiting at traffic lights to reduce engine idle time, emissions, and carbon buildup. The conditions for activating the autohold function are: the engine must be in working condition (started); the ESP system must be turned on; the driver's seatbelt must be fastened; and the driver's door must be closed. All four conditions must be met to activate the autohold function. If any of these conditions change, the autohold function will automatically turn off. This function is usually configured together with the electronic parking brake and is not enabled by default; it needs to be manually activated. The automatic parking system is a function that can achieve an automatic parking brake. The basic working principle of the automatic parking system is that the brake management system operates the four-wheel brakes based on the extended functions of the electronic parking brake. The technical role of the automatic parking function is to prevent the vehicle from rolling backward, which is particularly useful on slopes and during frequent starts and stops. The automatic parking system and the electronic parking brake (officially known as the electro-mechanical parking brake) can together form an intelligent braking control system, integrating temporary braking during driving and long-term braking after parking, and achieving parking braking through electronic control. The electronic parking brake is a technology that achieves parking braking through electronic control. Its working principle is the same as that of a mechanical parking brake, both relying on the friction generated between the brake disc and brake pads to control parking braking, except that the control method has changed from a mechanical parking brake lever to an electronic button. In terms of functionality, the braking control system extends from the basic parking function to the automatic parking function. For some manual cars, the computer will determine the vehicle's needs based on actions such as pressing the clutch, shifting to neutral, and pulling the parking brake, thereby shutting off the engine. When the clutch is pressed again, the engine will start. However, on congested roads, when moving forward slowly, or when reversing into a parking space, or on steep slopes, you can choose to turn off this function. When driving through water, be sure to remember to turn off this function, otherwise water may enter the exhaust pipe and then the engine, causing the engine to fail to start.
The autohold button on the car means it automatically helps maintain the braking function. After pressing it, when I stop at a red light or in traffic, releasing the brake pedal will automatically lock the brakes to prevent the vehicle from sliding. This is especially useful when starting on a slope, avoiding the risk of rolling back. In principle, it combines the electronic parking brake and sensors to monitor wheel movement, activating the brakes once the vehicle stops. I often use this feature on slopes, and a light press on the accelerator can release the lock, saving a lot of effort. The car's computer controls the entire process, making it reliable and worry-free, ensuring a smoother and more comfortable drive. Remember to confirm the light is on when starting, and once you get used to it, it becomes super practical.
