Why should the switch be set in the vehicle body stability system (ESP)?

ESP is an electronic stability program and an active safety system. Its main function is to prevent side slip and out of control by automatically braking other wheels and intervening in the engine management system when the vehicle turns at high speed and the front wheel with driving and steering functions slips.

The principle of ESP, when changing lanes in an emergency, the four tires of the car bear different forces. When the two rear wheels lose adhesion, the tail will be out of control. When ESP intervenes, it will brake a single tire to ensure that the car will not get out of control because of the different adhesion of the four tires.

Therefore, ESP can indeed improve the limit to a certain extent, but the improvement range is very limited, because if all four tires lose adhesion because of too fast speed, it makes no difference whether there is ESP or not. Cars equipped with ESP often perform well in the pile-winding test, and once it works, it can save lives. But why is there a close button on the car for such an important function? Under what circumstances should it be closed? Let's talk about it below.

I believe many car owners have seen the ESP OFF key, which refers to the OFF switch of the body stability control system. Generally, as long as there is a vehicle equipped with ESP, ESP will be started by default when the vehicle stops. Close it in time under "special" circumstances, and don't worry about forgetting to turn on ESP. So what are these special circumstances?

1, sand, mud, wetlands When cross-country encounters deserts, muddy potholes, wetlands, etc. , the wheel adhesion is small, ESP will intervene to brake some wheels at any time, and it will also limit the engine speed. Even if you step on the accelerator hard, it is difficult for the vehicle to get out of trouble. At this time, it is necessary to turn off ESP to get the vehicle out of trouble.

2. When installing snow chains, the detection signals of cars equipped with snow chains, such as wheel speed sensors and lateral acceleration sensors, will be inaccurate, which will affect the normal work of ESP system. Maybe ESP will constantly intervene or report fault codes, so it's better to turn it off.

3. When climbing on the snowy and slippery road, it is the time when ESP comes into play. However, if the vehicle encounters a climbing road, the wheels are easy to slip. At this time, ESP will play a role in reducing the engine torque and increasing the difficulty of climbing. Therefore, in this case, ESP should also be shut down.

4. When drifting, friends who like drifting need to turn off ESP, and they can only have a drifting tail when they suddenly open.

Finally, it is important to remind everyone that ESP is still very important, but because it is invisible, many cars now want to sell cheap business, so try to reduce what you can't see. ESP bears the brunt. So choose a car carefully.