What does it mean when the ABS light in a car is on?

[DeMalachi]

The ABS light being on in a car indicates that there is a fault in the ABS system, and the ABS system will stop functioning, which means the car operates as if it doesn't have an ABS system. The braking performance of the car will deteriorate, so when the ABS light comes on, the fault should be addressed promptly. The ABS (Anti-lock Braking System) works by using sensors installed on the wheels to send signals when the wheels are about to lock up. The controller then instructs the regulator to reduce the hydraulic pressure in the wheel's brake cylinder, decreasing the braking torque. After a certain period, the original hydraulic pressure is restored. This cycle repeats continuously, ensuring that the wheels remain in a rotating state while maintaining maximum braking torque.