These pad sensors are like the smoke alarm in your home. When your pads reach a critical level, a warning light will appear on your dash and you might get unusual notices coming from the pads when you attempt to stop. Once these signals are given, the pads have worn down and are in need of replacement. These sensors must be purchased when you replace your brake pads in order to keep this alerting system intact.

This sensor is NOT for PCCB models. It will work with steel rotors only.