It refers to the electronic sensor that is attached to the brake system of the automobile. The main function of a brake sensor is to detect the wear and tear of the brake pads.
The brake sensor indirectly prevents the extreme deterioration of the brake pads by sensing the temperature of the brake pads. If the temperature becomes too high, the brake sensor will send alert signal to the driver via the brake sensor pilot light found on the dashboard. This pilot light flashes when the temperature becomes too high to bear.
