What Causes Abnormal Noise When Lightly Braking at Low Speeds?
2 Answers
Abnormal noises may occur due to the following reasons: 1. Brake Disc: Variations in the hardness of brake discs during manufacturing lead to uneven wear, which generally does not have a significant impact. If the noise is audible inside the cabin, it might be due to the nylon bushing on the brake pedal mounting bracket wearing out, causing friction between the bracket and the pedal. 2. Metal Components: Severe wear of the disc and pads may result in direct contact with metal components.
Experiencing squeaking noises when lightly applying the brakes at low speeds is a common issue I frequently encounter during daily driving. I believe this is often largely related to rust on the brake discs. Especially after the car has been parked overnight or when rainwater causes oxidation of the iron components, the friction during braking produces annoying squeaking sounds, which, while irritating, aren’t necessarily serious. Another common cause is excessive wear of the brake pads or dust accumulation, where debris can easily be squeezed when lightly braking at low speeds, resulting in sharp, unpleasant noises. I recommend regularly inspecting the brake system—for example, checking the thickness of the brake pads monthly and replacing them if they’re too thin. Additionally, try to park in dry areas to minimize the risk of rust. This not only reduces noise but also extends the lifespan of your brakes, avoiding more expensive repairs in the future. Simple maintenance, such as spraying brake cleaner for a quick clean, can temporarily alleviate the issue. However, if the noise persists, promptly consult a professional technician to avoid compromising safety.
