Electronic Stability Control (ESC) – What does it do?
ESC uses sensors in the car (wheel speed sensors, steering wheel position sensors, etc) to determine which direction the driver wants the car to go, and compares that to which way the car is actually going. If the system senses that a skid is imminent or has already started, in other words, that the car is not going in the directions the driver is telling it to go, it will apply the brakes on individual wheels to bring the car back under control. Because the system can brake individual wheels, whereas the driver can only brake all wheels at once, ESC can recover from skids that a human driver cannot.
