Brake noise identification

Bulletin number

2052785/6

Component

Service brakes, hydraulic

Summary

Brake noise identification. Customer statement / workshop findings: Noise complaint from the braking system. Workshop findings: The noise can be reproduced and clearly assigned to the braking system. Technical background Brake noises can be attributed to many causes. Eight of the most common causes are: - Brake discs or pads are close to their wear limit. - New brake pads and/or discs have not been properly bedded in after installation. - Aftermarket pads or discs are installed. - There is debris such as small stones, grit, road salt or sand between the brake disc and pad. - Discs are covered in rust. Rust can form when the vehicle has been stationary for long periods of time (Figure 1).

Owners of these vehicles have filed 4 complaints in the brakes category.