What Causes the Noise When Releasing the Brake Pedal?
2 Answers
Releasing the brake pedal with a clunking sound is caused by the brake disc and brake pads sticking together due to rust, resulting in abnormal noise. If the noise occurs when the car is new, this is a normal situation. The following are expanded details: Noise when the car is new: If the noise occurs when the car is new, this is a normal situation. For a new car, the brake pads and brake disc need continuous breaking-in. The brake pads may not fully align with the brake disc during braking, but this usually improves after about 500 kilometers or after maintenance. Noise caused by rust: This generally happens 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 driving again. This can be resolved by applying butter or specialized lubricant to the connection between the brake pads and brake calipers at a repair shop.
I've been driving for quite a few years and have encountered the issue of squeaking noises when releasing the brakes several times, which is quite annoying. Generally, such sounds come from minor issues in the braking system, such as excessively worn brake pads, poor contact of metal parts, rust, or dust stuck inside. It's more common in humid weather, as rain or dirt can make the friction more screechy. If ignored, the noise can get louder and even affect the sensitivity of the brakes, which could be dangerous in critical moments. I believe that once such sounds appear, it's essential to promptly check the thickness of the brake pads and their surface cleanliness, replacing them or applying specialized lubricant if necessary. Remember, safety comes first—saving a small amount of money now could lead to major trouble later. Don't wait until an accident happens to regret it. Regularly washing your car to keep the undercarriage clean can also help prevent this issue.
