What are the symptoms of a faulty ABS pump?
2 Answers
When the ABS pump fails, the vehicle may exhibit the following symptoms: 1. Inability to prevent wheel lock-up during emergency braking, posing a safety hazard; 2. The ABS warning light will illuminate, and the brake pads may fail to reset. The causes of ABS pump failure include: 1. Faulty ABS wheel speed sensor; 2. ABS wiring connection issues; 3. ABS control unit programming errors; 4. ABS master cylinder malfunction. The functions of ABS are: 1. Maximizing braking efficiency, reducing braking time and distance; 2. Effectively preventing vehicle skidding and fishtailing during emergency braking, ensuring good driving stability; 3. Allowing steering during emergency braking, maintaining good steering control; 4. Avoiding excessive friction between tires and the road surface, reducing tire wear.
I think my car's ABS pump is malfunctioning, and the symptoms are quite obvious. Initially, the ABS warning light on the dashboard came on—it looks like a small yellow bucket—and stayed lit to alert me of an issue. Then, while driving, the braking became less smooth, especially on wet roads. When I stepped on the brakes, the wheels would lock up completely, causing the car to skid and wobble, unlike before when the ABS would assist with pulsed braking to stabilize the vehicle. The braking distance also increased, and I almost rear-ended another car once—it was terrifying. If left unrepaired, the anti-lock braking function is completely gone, making driving in the rain even more dangerous. I recommend getting it checked at a repair shop as soon as the warning light appears to avoid accidents. Additionally, a faulty ABS pump might cause the brake pedal to feel unusually stiff or soft, but this varies from person to person—start with simpler checks first.
