What Causes the Abnormal Noise When Braking in an Automatic Transmission Car?

[OElliott]

Abnormal noise when braking in an automatic transmission car may be due to the normal activation of ABS or electronic linkage. Here are the detailed explanations: Normal Activation of ABS: The working process of ABS is actually a cycle of locking-releasing-locking-releasing, keeping the vehicle in a state of critical locking with intermittent rolling. Therefore, when you brake hard and trigger the ABS, it will produce a clicking sound, which is a normal phenomenon. In this case, simply press the brake pedal firmly to the end. 'Clicking' Sound from the Gear When Braking in an Automatic Transmission Car: If you hear a 'clicking' sound between the transmission and the gear lever when pressing the brake pedal, the main reason for this noise could be the electronic linkage between the braking system and the automatic transmission. When you press the brake, the transmission solenoid valve opens and emits a 'clicking' sound. At this point, you need to press the gear lever lock button to shift gears, which serves as a safety reminder.

[Archie]

I've been driving automatic cars for over a decade and often encounter abnormal noises when braking. The most common causes are worn brake pads producing metallic sounds, or scratches/rust on the rotors. I remember one particularly sharp noise turned out to be a small stone stuck between the pad and rotor, which I removed. Loose brake calipers or piston retraction issues can also cause noises. During maintenance, I make it a habit to replace pads when they wear below 3mm thickness. Neglecting these issues reduces braking efficiency and increases skid risks, especially in rainy conditions. Regular cleaning of the brake system with professional cleaners prevents dust buildup and extends lifespan. Don't hesitate to visit repair shops for diagnosis - maintaining good vehicle condition ensures safer driving.

[DelAutumn]

As a young car owner, I'm quite particular about driving details. The abnormal noise when braking gives me the creeps—it could be due to aged brake pads hardening or uneven disc surfaces. My car once made a sharp screeching sound; a friend advised me to check, and it turned out the pads were excessively worn—replacing them fixed the issue. Temporary rustling noises after washing the car or rain are normal, but persistent sounds signal danger. Automatic transmission cars endure heavy brake loads from frequent urban stop-and-go traffic. I recommend checking brake wear every 5,000 km during routine maintenance—don't wait for major issues. Safety first—small preventive repairs save money and prevent accidents, making driving much smoother.

[McRyan]

I've given quite some thought to car noises. The common squeaking sound when braking in automatic transmission cars often originates from the brake system, such as impurities on the friction surface of pads and discs or excessive wear. Rusted brake calipers or stuck pistons can also contribute. I've dealt with cases where cleaning foreign objects and replacing pads restored normal operation. Unusual noises indicate component damage - timely repairs prevent extended braking distances and safety hazards. Maintaining system cleanliness and regular inspections are key.

[CadenLynn]

Having driven for most of my life, my experience tells me that squeaky brakes often indicate worn brake pads. Frequent braking in automatic transmissions accelerates wear, leading to sharp or hissing sounds as a warning. It could be due to rust on the discs or deeper grooves—cleaning might help. But persistent noise means it's time to measure thickness and repair or replace components. I always emphasize not to neglect maintenance—a well-functioning braking system ensures stable driving and safety comes first.