Is the 'Bang' Sound When Pulling the Handbrake a Sign of Breakage?
3 Answers
It is not broken. The sound occurs when the brake pads adhere to the brake discs. Lightly tapping the brakes a few times after starting the car will resolve the issue. Sometimes, this situation can also occur if the car is left unused after washing and driven the next day. Below are specific details about the handbrake: 1. Handbrake: The handbrake operates on the lever principle, using a steel cable to activate the rear wheel braking mechanism. The key components are the locking pawl and gear, which automatically engage together. 2. Pulling the Handbrake (Braking the Rear Wheels): When the handle is pulled, the pawl automatically springs up to catch the next gear tooth, while the connected steel cable gradually tightens, thereby applying the rear wheel brake pads. 3. Releasing the Handbrake (Releasing the Rear Wheels): When the handle button is pressed, the pawl and gear separate. Pressing down the handle then loosens the tightened steel cable, releasing the rear wheel brakes.
When I hear that 'bang' sound while pulling the handbrake, I think in most cases it's not actually broken but a normal reaction of the handbrake system releasing tension. The handbrake works by using a cable to pull the rear brakes, and when you release it, if the cable suddenly snaps back or the brake pads get stuck momentarily, it can produce this noise. I've repaired many cars and found that this often happens after parking on a slope or when the vehicle has been left unused for a long time, caused by dry friction of metal parts during movement. If the sound occurs occasionally, and you can easily pull and release the handbrake while the car remains stable, there's no need to worry. However, if it happens every time, possibly accompanied by a loose handbrake cable or the car rolling after parking, then you should be cautious—it might indicate insufficient lubrication or wear on the cable, requiring lubrication or a professional inspection to prevent further issues that could affect driving safety. Regular maintenance of the cable can reduce the occurrence of such noises.
Having driven for over a decade, I often hear that sound when pulling the handbrake. It's usually not a sign of breakage, but rather the mechanical action completing its job. There's a spring-like mechanism in the handbrake system – when you release it, the cable snaps back and hits a fixed point, creating that 'pop' sound. I've noticed it happens more frequently when parking on slopes because there's greater tension buildup. If the handbrake still functions normally after the sound and holds the car securely, it's fine. But if it happens every time accompanied by looseness or the car rolling, then it's time for inspection – the cable might be stuck or corroded. Applying some lubricant could help. My old car had this issue, and the sound disappeared after treatment. For safety, don't ignore it. Occasional sounds are acceptable, but persistent occurrences might indicate a problem. After simple observation, it's advisable to get a professional diagnosis at a repair shop.
