Abs Operation Sounds And Sensations

During normal operation, the ABS makes several sounds that may seem unusual at first:

• A whining sound is caused by the ABS hydraulic unit motor.
• When pressure is applied to the brake pedal, the pulsation of the pedal causes a scraping sound.
• When the brakes are applied firmly, the ABS operates, rapidly applying and releasing the brakes many times per second. This repeated application and release of braking forces can cause the suspension to make a thumping sound and the tires to squeak.