Is there an esp icon on the instrument panel during the self-test?

After the car with ESP function is powered on, the ESP light will be on, which is estimated to be gone in two seconds!

The function of ESP is that when the driver controls the car beyond the limit, the computer will automatically intervene to correct driving. There are two ways to control the vehicle movement by computer: the first way is to control the throttle to collect oil, attenuate the vehicle power and slow down the speed; The second means is to brake some wheels to reduce the speed to the limit. So how does the computer know whether the movement of the vehicle is close to the limit? This requires two sets of sensors to collect driving information for the computer. One set is the steering angle sensor of the steering wheel; One set is wheel speed sensor (one on each wheel). The former is used to collect the driver's steering intention, and the latter is used to monitor the vehicle movement. When the steering angle sensor of the steering wheel detects the steering angle of the driver, it will notify the ESP computer. At the same time, the wheel speed information measured by each wheel speed sensor will also be transmitted to ESP computer. The computer can calculate the actual trajectory of the vehicle according to the speed of each wheel. If the actual trajectory is different from the theoretical trajectory, or a wheel slips (loses grip), the computer will first inform the throttle to reduce the opening (collect oil). Then inform the braking system to brake a certain wheel and correct the motion trajectory. When the actual trajectory is consistent with the theoretical trajectory (driver's intention), ESP will automatically release the control.

So with this system, whether it is sunny or rainy, drivers can step on the accelerator with confidence, because with the help of ESP system, everything is handy. With the intervention of ESP, the probability of losing control of vehicles on wet roads is greatly reduced, and the active safety of the whole vehicle is also higher. Therefore, many automobile manufacturers like to promote ESP system as a safety device. But ESP is not everything, it is just a set of auxiliary equipment. Don't think that with ESP, you can use your big foot to throttle or turn at high speed. If you drive too hard, God can't help you.

It is because of the intervention of ESP that the computer will automatically control the oil collection and braking. Driving is also quite satisfactory, so it is difficult to play the action of measuring slip, swinging tail or even drifting. Therefore, many people who pursue driving pleasure like to turn off ESP while driving, and thoroughly seek the stimulation of intense driving.