Audible pad wear sensors have electrical contacts embedded in the linings. These contacts trigger the chime module when the pads wear down.

Question

Quizplus · Accepted Answer

Audible pad wear sensors typically work by having a small metal tab on the brake pad that contacts the brake disc when the pad wears down to a certain point, creating a high-pitched squealing noise to alert the driver, not by triggering an electrical chime module.

Audible Pad Wear Sensors Have Electrical Contacts Embedded in the Linings