What Causes the Abnormal Noise in the Chassis When Braking Hard?

[CatherineFitz]

The reason for the abnormal noise under the car when braking hard is the activation of the ABS system, which produces sound when in operation. Introduction to the ABS System: ABS is the anti-lock braking system in a car, which prevents wheel lock-up during emergency braking. If the wheels lock up during emergency braking, the driver cannot slow down the car or control its trajectory. Function of the ABS System: The ABS system allows the wheels to maintain a state of rolling and sliding during emergency braking, enabling the driver to slow down the car and control its trajectory to avoid obstacles. Therefore, the ABS system has become almost a standard feature in cars. In emergency situations, the correct approach is to press the brake pedal firmly to the floor, which activates the ABS system.