What causes the clicking noise when stepping on the brake in a Polo?
2 Answers
Possible causes of clicking noise when stepping on the brake in a Polo: 1. If the noise is a screeching sound, check if the brake pads are worn out. 2. If the brake pads are new, inspect whether the brake disc has grooves, as localized friction can cause noise. If the brake disc is fine, consider whether the brake pads are too hard, the anti-noise shims are improperly installed, or if there is any foreign object trapped between the brake disc and the brake pads. 3. If the noise is a dull sound, it might be an issue with the brake caliper, such as worn guide pins or detached spring clips. 4. If the noise is a hissing sound, the caliper, brake disc, or brake pads could be problematic. 5. If the noise persists, check for brake drag. Poor retraction of the brake caliper can cause prolonged friction between the brake disc and pads, leading to abnormal noise under certain conditions.
A clicking sound when stepping on the brakes while driving is quite common in my driving experience. Generally speaking, it could be caused by loose components in the braking system, such as excessive clearance between the brake disc and pads, or improperly tightened caliper bolts. I've encountered similar situations before, and upon inspection, found that the brake pads were severely worn and needed replacement. It could also be an issue with the suspension system, such as loose shock absorbers or control arms, which produce abnormal noises when braking. Additionally, if the caliper pins are not smooth or have rust, they may cause metallic clanging sounds. Ignoring such issues can affect braking performance, and it could be dangerous if problems arise on the road. Therefore, I recommend first checking the brake pad thickness yourself—if it's below 3mm, it's time for a replacement. If you don't have the tools, promptly visit a repair shop for a diagnosis to prevent the problem from worsening. Regular maintenance is key to avoiding such malfunctions.
