Global Parts 1815871 Disc Brake Pad Wear Sensor - Rear

Brake Wear Sensor for Audi Rear Ceramic Brakes

Global Parts 1815871 is a direct replacement disc brake pad wear sensor for rear applications on select Audi models with ceramic brakes. It monitors brake pad thickness and provides a clear wear alert when pads are nearing the end of service life, helping maintain braking performance and driver awareness.

Key Features

• Direct replacement brake pad wear sensor
• Rear position application for select Audi vehicles
• Designed for ceramic brake systems
• Blade terminal type with 2 terminals
• Female connector with oval connector shape
• Male terminal gender
• Wiring harness included
• Single-wire design for simplified routing

Detailed Description

This Global Parts brake wear sensor, part number 1815871, is built for accurate brake pad wear detection on select Audi models. It is a rear brake sensor application for the Audi RS6 Avant, RS7 Sportback, Q8, S6, S8, and A6 where ceramic brakes are equipped. The sensor is engineered to signal pad thinning before brake performance is affected, supporting timely brake service and consistent pedal feel. This part cross-references 4M0615121D and ES115907 for the same application.

What It Helps Address

• Brake wear warning light triggered by a failed sensor
• Inaccurate pad wear detection at the rear axle
• Damaged or broken sensor wiring at the brake assembly
• Service issues after rear brake pad replacement
• Loss of brake pad wear monitoring on ceramic brake systems

Installation Notes and Tips

Verify rear fitment before installation and match the connector style, terminal count, and wiring layout to the original sensor. Inspect the brake pad wear circuit and surrounding harness for damage before connecting the new sensor. Confirm the application on 2020-2024 Audi Q8 rear with ceramic brakes, 2020-2024 Audi S6 rear with ceramic brakes, 2020-2024 Audi S8 rear with ceramic brakes, 2021-2025 Audi RS6 Avant rear with ceramic brakes, 2021-2025 Audi RS7 Sportback rear with ceramic brakes, and 2021 Audi A6 rear.

Quality Assurance

Global Parts supplies direct replacement components built to match the original sensor style and fitment requirements for the listed Audi applications. Part number 1815871 is intended to restore brake wear monitoring performance on the specified rear ceramic brake setups.