Brembo A00277 Disc Brake Pad Wear Sensor - Front or Rear

Brembo Premium OE Wear Sensor for Mercedes-Benz

The Brembo A00277 disc brake pad wear sensor helps monitor brake pad thickness and alerts the driver when the pads reach minimal remaining life. Built to OE specifications, it matches the original sensor function on the vehicle for direct replacement service on select Mercedes-Benz models.

The Brembo Premium OE Equivalent Wear Sensor line is made for drivers who want factory-style brake warning performance without changing the original system behavior. Brembo A00277 is a fitment-based replacement for front and rear applications across a wide range of Mercedes-Benz AMG, Maybach, and luxury models.

Key Features

• Electronic disc brake pad wear sensor for brake pad thickness monitoring
• OE-equivalent design for original-style warning signal operation
• Made to OE specifications for direct replacement use
• Recommended by Brembo to replace with every brake pad service
• Fits front and rear applications on select Mercedes-Benz vehicles
• Cross-reference example: Hella Pagid 355250941

Detailed Description

This Brembo brake pad wear sensor is designed to report pad wear before braking performance is affected. When the sensor detects minimal pad thickness, it sends the warning signal used by the vehicle’s brake monitoring system. The A00277 part number is listed for numerous Mercedes-Benz applications, including AMG GT, C63 AMG, E63 AMG, G63 AMG, S63 AMG, and other premium models. For vehicles such as the Mercedes-Benz AMG GT 63, E63 AMG S, SL63 AMG, and S65 AMG, note the exclusions for Ceramic Composite Brakes where specified in the fitment data.

As part of Brembo’s Premium OE Equivalent Wear Sensor line, this component is built for drivers replacing worn brake pads who need the warning system restored to proper operation. The sensor is a direct-fit style replacement for the original wear sensor used on the listed Mercedes-Benz brake systems.

What It Helps Solve

• Brake pad wear warning light staying on after pad service
• Loss of brake pad thickness monitoring function
• Incorrect or delayed pad wear alerts
• Sensor damage during brake pad replacement
• Need for OE-style replacement on Mercedes-Benz brake systems

Installation Notes and Tips

• Fits 2021 Mercedes-Benz AMG GT 43, front.
• Fits 2019-2021 Mercedes-Benz AMG GT 63, front; excludes Ceramic Composite Brakes.
• Fits 2008-2021 Mercedes-Benz C63 AMG, front and rear depending on model year.
• Fits 2014-2018 Mercedes-Benz CLS63 AMG S, front and rear depending on model year.
• Fits 2015-2021 Mercedes-Benz S63 AMG, front; excludes Ceramic Composite Brakes.

Replace the wear sensor during brake pad service whenever the original sensor has been triggered, damaged, or removed from the pad set. Verify axle position and brake package details before ordering, especially on vehicles with Ceramic Composite Brakes exclusions or Sport Package notes.

Quality Assurance

Brembo manufactures this sensor to OE specifications for factory-style fit and warning function. Brembo also recommends replacing brake pad wear sensors with each brake pad replacement to maintain proper system operation.