PowerStop has a reputation for precision and adherence to the strictest OEM standards, which extends to our brake wear sensors. Designed to meet the same form, fit, and function as the original OEM part. We pride ourselves to meet or exceed OEM requirements. Brake wear sensors wear down with the pads and illuminate the brake pad wear indicator light/warning. When that happens, it's time to replace the brake pads as well as the sensors. Our sensors are designed to withstand high temperatures and assure excellent electrode conductivity. PowerStop Brake Wear Sensors continue to work after thousands of miles, providing the safety and performance drivers count on.