What Causes the Abnormal Noise When Releasing the Handbrake to Start?
2 Answers
Abnormal noise when releasing the handbrake to start is caused by the slow release of the brake pedal, leading to adhesion between the brake disc and brake pads. The following are specific analyses: 1. Releasing the brake too slowly: When the brake pedal is slowly released, the engine already has sufficient power to drive the car forward. At this time, if the brake is not fully released, the moving wheels are restrained by the brake system, naturally causing abnormal noise, which is a normal phenomenon. 2. Adhesion between the brake disc and brake pads: The brake disc and brake pads stick together due to rust, causing abnormal noise. This usually occurs after driving in rainy weather or after the car has been parked for a long time. The brake disc and brake pads rust and stick together, resulting in noise when starting again. This issue can be resolved by applying butter or specialized lubricant to the connection between the brake pads and brake calipers.
When encountering this situation, I usually first check if the brake discs and brake pads are rusty. If the car has been parked in a humid environment for a long time, the metal surfaces are prone to rust, and releasing the handbrake can cause a screeching sound due to friction. Severe rust can even wear down the components and shorten their lifespan. In such cases, driving the car out and applying the brakes a few times can help grind off some of the rust. However, if the noise persists or worsens, it might indicate that the handbrake cable is stuck or the springs are aging, requiring a visit to the shop for a mechanic to inspect and possibly replace them at a small cost. To prevent this, try to park in dry areas and avoid pulling the handbrake too tightly or for extended periods.
