Why does the car still not stop when ABS intervenes during braking?

[DeKylie]

When the car's wheels enter a locked state, the ABS will intervene. The reason why the car still doesn't stop when ABS intervenes during braking is that the tires are not locked. Here is more information about the ABS system: 1. The ABS system, or Anti-lock Braking System, intervenes to prevent wheel lock-up. Its function is to control the braking force when the car is braking, preventing the wheels from locking and keeping them in a state of simultaneous rolling and sliding. This ensures optimal adhesion between the wheels and the road surface. 2. The ABS system can be divided into four types: four-channel, three-channel, two-channel, and one-channel. The four-channel ABS has four wheel speed sensors and operates independently. If the adhesion area between the wheels and the road surface varies significantly, the braking force generated during braking will also differ greatly. The three-channel ABS independently controls the two front wheels, known as hybrid control. The two-channel ABS has a relatively limited application and is less commonly used in cars today. The one-channel ABS, often referred to as single-channel ABS, is a type of rear-wheel brake ABS. It enables the car to fully utilize braking effectiveness, reducing braking time and distance, effectively preventing the car from skidding, ensuring stability, allowing steering during braking, and maintaining good handling of the car.

[VonJustin]

I've been driving for over ten years and have experienced a few instances where the braking distance felt longer after the ABS activated. When the ABS system is functioning normally, it rapidly pulses the brakes to prevent wheel lock-up, causing the brake pedal to vibrate intensely, but the vehicle's deceleration might not be as immediate as with traditional locked-wheel braking. Especially on gravel or snow-covered roads, if the wheels don't fully lock, they can't create a wedge-shaped resistance, making it feel like the car isn't stopping effectively. However, the biggest advantage of ABS is that it allows you to maintain steering control during hard braking, which is crucial for avoiding obstacles. If you consistently notice significantly reduced braking force during emergency stops, it's advisable to check your tire wear. Worn-out tires with poor grip can exacerbate this issue.

[OPeyton]

In auto repair shops, car owners often complain about poor braking performance after ABS intervention. There are several common reasons: the wheel speed sensor is covered with dirt, affecting signal transmission and causing the ABS computer to misjudge the tire condition; or poor internal circuit contact in the control module prevents precise adjustment of braking force; air in the brake lines can also make the pedal feel spongy. It's like when your phone screen is dirty and the touch response is poor—the system itself isn't broken, but the input signal is faulty. It's best to use a diagnostic tool to read the fault codes, focus on cleaning the sensor connectors, and check if the brake fluid's water content exceeds the standard.

[Shaun]

Last time while driving in the rain at night, a pedestrian suddenly darted out. When I slammed on the brakes, the ABS activated, and I clearly felt the pedal pulsating, but the car slid farther than expected. This is because on slippery roads, the ABS must frequently release brake pressure to prevent skidding, sacrificing some braking efficiency to maintain steering capability. Actually, this is a normal phenomenon, just like how ice skates will slide a few extra steps when stopping suddenly. However, if this happens on dry roads, you might need to consider whether the brake pads are excessively worn or the tire pressure is incorrect.

[DelAngelina]

After driving through various road conditions, I found that ABS actually increases braking distance on thick snow or loose sand. Traditional locked wheels allow tires to dig into snow or sand piles, creating resistance, whereas ABS continuously releases brake pressure, weakening this effect. Once on a rural dirt road, I stopped faster by turning off ABS during emergency braking. However, this should only be considered an emergency technique. Never disable ABS during normal driving—it can be lifesaving during sudden evasive maneuvers, especially when changing lanes to avoid obstacles on highways. For special road surfaces, it's safer to slow down in advance.

[Blakely]

The vehicle maintenance manual clearly states that the ABS system requires regular maintenance. If you notice abnormal pedal vibration and ineffective braking, it could be due to aging or cracked sensor wiring, or oxidized relay contacts causing signal interruption. This is similar to flickering lights at home due to poor electrical contact. It's best to visually inspect the tire tread depth monthly to ensure it's not below 3mm, and replace the brake fluid every two years. In emergencies, test the system's response with gentle braking. If there's no normal vibration and the pedal feels soft, immediately take the vehicle to the workshop for circuit inspection.