What is the reason for the continuous noise from the ABS pump?

[StIan]

ABS pump continuous noise is caused by an internal control short circuit in the ABS pump. The following is a detailed introduction to the ABS system: 1. Function of the ABS system: ABS is the vehicle anti-lock braking system, which belongs to the active safety system of the car. When the ABS light is on, it indicates that the car's computer has detected a fault in the ABS system. 2. Principle of the ABS light: Under normal driving conditions, the ABS remains dormant. It only activates during emergency braking, such as high-speed hard braking, when the car's computer determines that ABS intervention is necessary. When the ABS light is on, it is often due to the wheel speed sensor not functioning properly. The ABS computer cannot detect the driving conditions of each wheel, making it unable to compare the slippage of each wheel, resulting in the ABS system not working properly.

[JackAnn]

I've driven several cars and encountered situations where the ABS pump kept making noise, which was quite a headache. There could be several reasons: the most common one is that the wheel speed sensor is dirty or damaged, causing the ABS system to think the wheels are slipping and continuously activating the pump to prevent lock-up; the toothed ring on the wheel hub might be rusted or damaged, leading to inaccurate signals; insufficient or leaking brake fluid can cause abnormal system operation, resulting in constant pump noise; loose wiring connections or relay failures can also make the pump buzz continuously. If not addressed promptly, normal braking may fail, especially on slippery roads, which is highly dangerous. It's recommended to check if the ABS light is on, but don't ignore it even if it's off—drive to a repair shop as soon as possible and have a technician check the fault codes with a diagnostic tool. A mechanic once told me that delaying repairs for these minor issues often leads to major accidents, and simply wiping the sensors during regular car washes can help prevent trouble.

[StEmilia]

As someone with over twenty years of driving experience, I believe that a constantly noisy ABS pump requires checking several key points: first, the wheel speed sensor may be covered in mud or damaged, causing the system to falsely activate continuously; second, the brake fluid may be too low or contain air bubbles, leading to continuous pump noise; third, the tone ring may be worn, interrupting the signal; fourth, there could be a short circuit or controller failure. These faults render the ABS ineffective, making the wheels prone to locking up and causing skidding during emergency braking, which can lead to accidents. The solution is simple: first, check the ABS warning light—if it's normal, inspect the pump circuit or replace the brake fluid; if the noise persists, seek professional repair immediately, and don't try to DIY to save money, as it could damage the car. The ABS is a critical safety line, and neglecting it is like playing with fire. I've seen many people cause accidents and incur huge repair costs because of this. Regular maintenance and checking key components are essential for prevention.

[McJaxson]

The constant noise from the ABS pump while driving makes me nervous. Common causes include dirty wheel speed sensors causing inaccurate signals, issues with the tone ring, or wiring problems that keep the system running continuously. Insufficient brake fluid can also lead to continuous pump noise. Persistent noise indicates potential ABS failure, which affects braking safety; I recommend checking the ABS light on the dashboard immediately and heading to a 4S shop for inspection. Ignoring it increases the risk of accidents, and prompt repairs save time and hassle. Routine maintenance can involve simple cleaning of sensors to prevent dust buildup.