Why does the Mercedes-Benz A200L make noise when braking?

[SanKendra]

Mercedes-Benz A200L makes noise when braking due to the running-in of new cars, normal activation of the ABS system, and metal hard spots on the brake pads. Running-in of new cars: New cars or newly replaced brake discs and pads will have a running-in period, during which some abnormal noises are inevitable. These noises usually disappear after running a few hundred kilometers. Normal activation of the ABS system: During emergency braking, the brake pedal will make a continuous "thud thud thud" sound, and sometimes there will be a bouncing sensation. This indicates that the ABS system is activated, which is a normal sound. At this time, you can press the brake pedal firmly to the bottom, but this only applies to vehicles equipped with an ABS system. Metal hard spots on the brake pads: There may be some small metal particles inside the brake pads, which will produce a sharp and harsh sound when lightly braking. This problem can be solved by stepping on the brake pedal hard several times, removing the brake pads for re-grinding, or replacing them with better-quality brake pads.