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What Causes the Abnormal Noise in Mercedes-Benz?

1 Answers

DelRyan

07/30/25 5:25am

There are many potential causes for brake noise in a Mercedes-Benz GLC, which require systematic troubleshooting. Common causes of brake noise include excessive wear of brake pads leading to metal-on-metal contact, or sand and debris trapped in the brake pads. It is recommended to check for excessive wear of brake pads, presence of sand in the brake pads, or deformation of brake discs. Below is relevant information: 1. Specific Causes: Brake noise may occur due to rust or hard spots on brake discs, typically noticeable when the vehicle first starts moving and improving after a few brake applications; Suspension system or pressure bearing noise may occur due to cold weather hardening rubber components, causing noise during braking that improves as the vehicle warms up; If the issue is with the brake caliper, it is advisable to check for faults in the brake caliper that may cause noise, and a professional inspection at a 4S shop is recommended. 2. Solutions: Try reinstalling the brake pads and apply butter or specialized lubricant at the connection between the brake pads and caliper to resolve the issue. It could also be that the brake pads were installed incorrectly, in which case reinstallation is necessary. This is particularly important for owners who had their brake pads replaced at informal repair shops.

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