What Causes Abnormal Noise When Releasing the Brake?
1 Answers
Abnormal noise when releasing the brake can be caused by slow brake release speed, rust adhesion, or metal foreign object friction. Below are detailed explanations: Slow brake release speed: When the brake pedal is slowly released, the engine already has sufficient power to drive the car forward, but the brake is not fully disengaged. As a result, the moving wheels are held back by the brake system, naturally producing abnormal noise. Rust adhesion: This usually occurs after driving in rainy weather and then leaving the car unused for several days. The brake disc and brake pads rust and stick together, causing abnormal noise when starting the car again. This can be resolved by applying butter or specialized lubricant at the connection between the brake pads and brake calipers at a repair shop. Metal foreign object friction: Many brake pads nowadays are made of semi-metallic materials, containing a large number of metal fibers. Sometimes, metal particles can form, producing a harsh noise when pressing or releasing the brake. This condition usually disappears after driving for a while. If it persists, it may indicate poor manufacturing quality, and it is recommended that the owner replace the brake pads promptly to avoid scratching the brake disc.