Why does the Volvo make a rattling noise when releasing the brake?

[DePhoebe]

Volvo brake rattling noise reasons are as follows: 1. There are foreign objects between the brake pads and brake discs: During normal driving, it is inevitable to pass through some relatively complex road conditions, and some sand and foreign objects may get between the brake pads and brake discs, causing abnormal noises when braking. 2. Severe wear of the brake disc: If inferior brake pads are used, or relatively hard foreign objects enter between the brake pads and brake discs, it will lead to abnormal wear of the brake disc. If the brake disc is excessively worn, it will also make a rattling noise when braking. 3. New car break-in: The break-in of the brake pads is a very important part. Usually, after running a few hundred kilometers, you can feel that the braking will be more comfortable.