Brembo A00431 Disc Brake Pad Wear Sensor - Rear

Brembo Rear Brake Pad Wear Sensor

The Brembo A00431 brake pad wear sensor monitors pad thickness and alerts the driver when the brake pads reach minimal remaining life. Built to OE specifications, it is a direct replacement for the original rear wear sensor on select BMW applications.

Brembo’s Premium OE Equivalent Wear Sensor line is focused on accurate wear monitoring and OE-style fitment. For BMW 528i, 535i, 550i, and 640i/650i rear brake service, this sensor helps restore the factory warning function without changing the vehicle’s original brake system design.

• Electronic rear brake pad wear sensor for brake wear monitoring
• OE-spec replacement for factory-style fit and function
• Designed for rear brake applications on select BMW models
• Supports brake pad replacement service on vehicles with wear indicator systems
• Part number A00431 for catalog and cross-reference use

Detailed Product Information

This Brembo brake pad wear sensor is made for drivers who need a direct OE-equivalent replacement when servicing rear brakes. It monitors pad thickness and triggers the dashboard warning when the pads are near minimum thickness, helping maintain the vehicle’s original brake wear alert system. Compatible With 2011-2016 BMW 528i, rear; 2012-2016 BMW 528i xDrive, rear; 2011-2016 BMW 535i, rear; 2011-2016 BMW 535i xDrive, rear; 2011-2016 BMW 550i, rear; 2011-2016 BMW 550i xDrive, rear; 2012-2016 BMW ActiveHybrid 5, rear; 2012-2018 BMW 640i, rear; 2014-2018 BMW 640i xDrive, rear; 2012-2018 BMW 650i, rear; 2012-2018 BMW 650i xDrive, rear; 2013-2019 BMW 640i Gran Coupe, rear; 2014-2019 BMW 640i xDrive Gran Coupe, rear; 2013-2019 BMW 650i Gran Coupe, rear; 2013-2019 BMW 650i xDrive Gran Coupe, rear; 2014-2016 BMW 535d, rear; 2014-2016 BMW 535d xDrive, rear.

This part cross-references Bosch 12018 and URO 34356791962 for the same application.

Common Problems This Sensor Helps Address

• Brake pad wear warning light stays on after pad service
• Brake wear indicator no longer reports pad thickness correctly
• Rear brake service requires an OE-style sensor replacement
• Dashboard brake warning appears as pads approach minimum thickness
• Restoring factory brake wear monitoring on select BMW rear brakes

Installation Notes and Tips

Replace the wear sensor during brake pad service, especially when the original sensor has been triggered or damaged during removal. Inspect the sensor routing and connector condition before installation, and confirm the rear application matches your BMW model, year, and drivetrain. The sensor is position-specific for rear brake use.

Quality Assurance

Brembo manufactures this sensor to OE specifications for factory-style operation and fitment. The A00431 part number is intended as a direct replacement for the original rear brake pad wear sensor on listed BMW applications.