What Causes the Clicking Sound When Releasing the Handbrake to Start the Car?
2 Answers
The clicking sound when starting the car can be attributed to two main reasons: 1. Individual Brake System: The noise originates from a single brake system, and if not addressed promptly, it may affect all brakes. 2. Moisture Not Dried: After washing the car or driving through water, failing to dry the moisture promptly can prevent the brake caliper piston or shoe from returning to its position. Below is additional relevant information: 1. Chassis Issues: This is one of the most common problems. Many cars experience aging suspension components after prolonged use. Over time, some supporting parts in the suspension may fail, causing abnormal noises from the chassis when starting the car. It is advisable to visit a 4S shop or a professional repair facility for chassis maintenance and inspection to check for loose, aged, or leaking bearings and replace any faulty parts as needed. 2. Foreign Objects: The noise could be caused by foreign objects stuck in the tire treads, such as screws, stones, or other hard objects. Removing these objects from the tires should resolve the noise issue.
As an experienced driver, the "clunk" sound often heard when releasing the handbrake to start the car usually occurs after rain or prolonged parking. The main reason is rust adhesion between the brake pads and brake discs. When you engage the handbrake, the metal surfaces exposed to air and moisture form a layer of rust, and when released, the sudden separation of the rusted parts produces that clunking sound. Additionally, if the handbrake cable is aged and slack or the spring fails, it can also cause jerky starts. I've encountered this situation several times before, especially after parking overnight in winter when it's more likely to occur. Handling it is quite simple: try to park in a dry environment, and when starting, slowly release the handbrake to avoid sudden jerks. If it happens frequently, it's best to have the brake system checked for wear to prevent long-term effects on braking performance. After all, brakes are crucial for safety and should never be taken lightly.
