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 handbrake of the vehicle, which is a function within the braking system. After the vehicle comes to a stop, it automatically engages the handbrake to ensure safety, and lightly pressing the accelerator will automatically release the handbrake effect. When the vehicle reaches a certain speed and brakes, if the vehicle comes to a complete stop and the brake pedal is pressed for another 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 mostly used when waiting at traffic lights to reduce engine idling time, emissions, and carbon buildup. The conditions for the autohold function to be activated 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 handbrake and is not enabled by default; it needs to be manually activated. The automatic parking system is a function that can achieve an automatic handbrake. 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 handbrake. The technical role of the automatic parking function is to prevent the vehicle from rolling backward, which is especially useful on slopes and during frequent starts and stops. The automatic parking system and the electronic handbrake (officially known as the electromechanical parking brake) can together form an intelligent braking control system, integrating temporary braking during driving with long-term parking braking, and achieving parking braking through electronic control. The electronic handbrake is a technology that achieves parking braking through electronic control. Its working principle is the same as that of a mechanical handbrake, both relying on the friction between the brake disc and brake pads to control parking braking, except that the control method has changed from a mechanical handbrake lever to an electronic button. In terms of functionality, the braking control system extends from basic parking functions to automatic parking functions. For some manual cars, the computer will determine the need to shut off the engine based on actions such as pressing the clutch, shifting to neutral, and pulling the handbrake. The engine will start again when the clutch is pressed once more. However, on congested roads when moving slowly forward, or when reversing into a parking space, or on steep slopes, you can choose to turn off this function. When driving through water, it is essential 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 a car actually refers to the automatic parking function. Press it once to activate it. I use this feature frequently in my daily driving, and it's particularly convenient. When the car comes to a stop, such as at traffic lights or in traffic jams, the system automatically locks the brakes, so I don't have to keep pressing the brake pedal, which prevents foot fatigue. Once activated, it automatically releases when you start driving, making it ideal for stop-and-go city driving. I've tried it a few times when parking on slopes, and it helped prevent the car from rolling back, enhancing safety. However, it's important to note that not all cars come with this feature as standard, so it's best to check the manual first. Once you get used to it, it can reduce fatigue, especially making long-distance driving more comfortable. Remember not to rely too much on it on slippery roads. Many new cars now come with this feature, and I've grown quite accustomed to it.
