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What Causes Friction Noise Without Braking?

1 Answers

VonVanessa

07/28/25 7:01pm

The reasons for friction noise without braking are as follows: Excessive wear of brake pads: The brake pads are too thin, exposing the metal, which causes the sensor on the brake pads to be worn out and trigger an alarm. Additionally, the friction between the metal of the brake pads and the brake disc can also produce noise. In this case, it is recommended to replace the brake pads and check whether the thickness of the brake disc meets the requirements. Sand or gravel between the brake disc and the brake pad: This situation usually occurs after the vehicle has driven through water, where mud or sand is brought into the gaps. When the brake pads and brake disc rub against each other, the temperature can reach 800-1200 degrees, making the brake pads very soft. Small stones can easily embed into the brake pads, causing sharp friction noises. Brake drag: Due to the brake piston not returning to its normal position after braking, the brake pads remain in a braking state, which can also produce certain abnormal noises during high-speed driving. Abnormal wear of the brake disc or brake pads: The brake disc may become deformed, damaged, dented, or raised due to external forces, while irregular wear of the brake pads can cause uneven surfaces, leading to friction noises even when braking.

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