What is the reason for the clicking sound when stepping on the brake?
2 Answers
The reason for the clicking sound when stepping on the brake is the normal activation of the ABS. The working process of ABS involves a cycle of locking and releasing, keeping the vehicle in a state of intermittent rolling near the critical lock-up point. When the ABS is triggered by a sudden brake application, it produces a clicking sound, which is a normal phenomenon. In this situation, firmly pressing the brake pedal to the floor is sufficient. The function of the car's braking system is to reduce speed or bring the vehicle to a stop. Its working principle relies on the friction between the brake pads and the brake drum, as well as between the tires and the ground, converting the kinetic energy of the moving vehicle into heat energy through friction, thereby slowing down or stopping the vehicle.
My old car has been making a clicking noise when braking lately, and upon inspection, I found that the brake pads are almost worn out or the surface is uneven. Before my last long trip, I didn't check in time, and as a result, the braking distance became noticeably longer, which was quite dangerous. It's recommended to check the thickness of the brake pads; if it's less than 4 millimeters, they must be replaced. New pads should be glued in place to prevent looseness and noise. Additionally, after rain or prolonged parking, the brake discs are prone to rust, which can be removed by lightly braking a few times, but remember to clean the wheel hubs regularly to prevent dust buildup. If the noise is accompanied by vibration, it might be due to aging brake caliper rubber boots that need replacement. It's best to have a professional mechanic check every 5,000 kilometers to ensure safety. Don't underestimate this small noise; delaying repairs might lead to burning out the brake discs and costing more money.
