TCL/ASC Operation Sounds And Sensations

WARNING: This page is about a different car, the 2005 Mitsubishi Endeavor. However, it is still accessible from the selected car via links, so may be relevant.

During normal operation, the TCL/ASC makes several sounds that may seem unusual at first:

A whining sound is caused by the TCL/ASC 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 TCL/ASC 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.