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Understanding and Fixing ABS Brake Issues in Your Car

LONG

03/03/2025

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Car

“A stitch in time saves nine” applies perfectly to car maintenance, especially for the ABS braking system. Proper use and maintenance can prevent accidents and ensure safe travels on the road.

ABS Brakes – Your Safety Shield on Every Journey

The Anti-lock Braking System (ABS) is a crucial safety feature in modern vehicles. During hard braking, ABS automatically pumps the brakes, preventing wheel lockup. This allows the driver to maintain steering control and minimize the risk of accidents.

ABS Brake Problems: Causes and Symptoms

Despite its benefits, the ABS system can malfunction, compromising your safety. Here are common causes of ABS issues:

Causes of ABS Malfunctions

Dirty or Damaged ABS Sensors: ABS sensors monitor wheel speed and transmit data to the Electronic Control Unit (ECU). Dirty or faulty sensors prevent the ECU from receiving accurate information, leading to system errors.
Worn or Broken ABS Reluctor Rings: Attached to the wheel hub, the reluctor ring generates signals for the ABS sensor to detect wheel speed. Worn or broken rings disrupt these signals, causing system errors.
Faulty ABS Pump or Electronic Valves: The ABS pump provides brake fluid pressure, while electronic valves regulate pressure to each wheel. Malfunctions in either component disrupt normal ABS operation.
Damaged or Intermittent ABS Wiring: Wiring transmits signals between ABS components. Damaged or loose wiring disrupts communication, leading to system malfunctions.

Recognizing ABS Problems

Illuminated ABS Warning Light: This is the most obvious sign of an ABS issue. If the ABS warning light illuminates, take your car to a reputable mechanic for diagnosis and repair.
Pulsating Brake Pedal During Hard Braking: A strong, unusual pulsation in the brake pedal during hard braking often indicates an ABS problem.
Ineffective or Non-Responsive Brakes: In some cases, ABS malfunctions can lead to ineffective braking. This is a dangerous situation requiring immediate professional attention.

For a visual understanding of ABS fault causes and signs, refer to the image below:

Damaged ABS sensor

ABS Repair Cost Estimates

Fault Type	Estimated Cost (VNĐ)	Lowest Cost (VNĐ)
ABS Sensor Replacement	1,500,000 – 3,000,000	1,200,000
ABS Reluctor Ring Replacement	500,000 – 1,000,000	400,000
ABS Pump Repair	2,000,000 – 5,000,000	1,500,000
ABS Electronic Valve Replacement	1,000,000 – 2,500,000	800,000
ABS Wiring Repair	500,000 – 1,500,000	300,000

Note:

These prices are estimates. Actual costs vary depending on the car make, model, repair shop, and location.
For accurate repair costs, consult a reputable mechanic for a thorough inspection and quote.

Frequently Asked Questions About ABS Problems

Are ABS Problems Dangerous?

Yes, very dangerous! ABS malfunctions can cause loss of control during hard braking, significantly increasing the risk of accidents.

Can I Fix ABS Problems Myself?

The ABS is a complex system requiring specialized knowledge and diagnostic equipment. Attempting DIY repairs can be dangerous and cause further damage.

What Should I Do if the ABS Warning Light Comes On?

Remain calm, reduce speed, and find a safe place to stop. Perform a basic brake and tire check, then contact a reputable mechanic for assistance.

For a visual guide on handling an illuminated ABS warning light, see the image below:

Illuminated ABS warning light

Conclusion

Choosing a trustworthy repair shop is as important as regular car maintenance. Visit XE TẢI HÀ NỘI in Hanoi’s districts like Hoan Kiem, Ba Dinh, Hai Ba Trung, Dong Da, or neighboring areas like Ha Dong, Long Bien, Gia Lam for professional, high-quality car repair services at reasonable prices.

See the image below for a glimpse of XE TẢI HÀ NỘI’s professional car repair services: