The reason why the ABS makes abnormal noises and causes foot vibration when the brakes are lightly pressed frequently is that the working process of ABS involves a cycle of locking and releasing, keeping the vehicle in a state of intermittent rolling on the verge of locking. When the brakes are pressed hard in an emergency, triggering the ABS to work, it will produce abnormal noises, which is a normal phenomenon. In this case, simply press the brake pedal firmly to the bottom. How Car ABS Works: During braking, the ABS quickly determines the locking state of each wheel based on the speed signals transmitted by the wheel speed sensors, closes the normally open input solenoid valve on the wheel that is starting to lock, and keeps the braking force unchanged. If the wheel continues to lock, the normally closed output solenoid valve is opened, and the braking pressure on the wheel rapidly decreases due to the direct connection to the brake fluid reservoir, preventing the wheel from completely locking due to excessive braking force. This keeps the braking state at the optimal point (with a slip rate of 20%), achieving the best braking effect and the highest driving safety. The Role of Car ABS: It can fully utilize the effectiveness of the brakes, shortening braking time and distance; it can effectively prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability; it allows steering during emergency braking, providing good steering control; it avoids intense friction between the tires and the ground, reducing tire wear.
