What does it mean when the ESP light is on in a vehicle?

[StellaMarie]

The ESP light on a car indicates the body stability system. When the ESP light on the dashboard lights up, it means that the electronic stability system of the vehicle may have malfunctioned, or it could be caused by damage to other functions. In such cases, it is recommended to send the vehicle to a 4S shop for inspection as soon as possible. The ESP system mainly consists of three parts: sensors, actuators, and the electronic control unit (ECU). The sensors generally include wheel speed sensors, steering wheel angle sensors, lateral acceleration sensors, yaw rate sensors, and brake master cylinder pressure sensors. The actuators usually include traditional braking systems and hydraulic regulators. The electronic control unit works in conjunction with the engine management system and can intervene and adjust the engine's power output. The principle of ESP is: through the ABS electronic control unit, based on the signals from the vehicle's wheel speed sensors, the slip rate of the wheels and the vehicle's speed are determined through calculation and analysis. The electronic control unit then adjusts the slip rate of the wheels by controlling the throttle opening and brake pressure.