When you start hearing a squeaky sound coming from your car, it can be worrisome. It’s often hard to tell the cause of this sound and what might need to be done to fix it. Squeaking brakes could mean that your brake pads or shoes are worn out and need replacing, but there are other causes as well. Here are 8 potential causes for squeaky brakes and what you can do about them:.

The brake pads are worn down

Brake pads can wear down over time, causing them to make a high pitched squeaking sound when they rub against the metal in your brake system. This is more common when your brake pads are made of organic materials like natural rubber or silicone.

The noise will often get louder when you apply the brakes, and it will go away if you turn off your car's engine. You might also see that the brake pedal sinks in further than normal when applying the brakes.

To fix this problem, there are two things you can do. You can either replace your brake pads with new ones, or grind them down to eliminate the friction that's causing the noise. Consult with a professional mechanic before taking any action on this problem.

The brake fluid is low

If your brake fluid is low, you'll experience a squeaky sound when applying the brakes. This is because the brake fluid is present to give the brakes some dampening so they don't make too much noise. If you hear this sound and know that your brake fluid level was recently checked, the problem could be an air bubble in your brake line. To fix this issue, just bleed your brakes to remove any air bubbles.

There's a leak in the hydraulic system

The hydraulic system is a part of the brake system. If your car's brakes are squeaking and you know they've been serviced recently, this could be a sign that there is a leak in the hydraulic system.

A leak can occur when there is a hole in the hose or something else. The brake fluid will seep out and could cause damage to the system.

If you suspect that there might be a leak in your hydraulic system, get it looked at by an expert to determine what repairs need to be made.

Brake calipers are sticking due to lack of lubricant or rust/corrosion

If you notice a squeaky sound when applying the brake pedal, it's possible that your brake calipers are sticking. Brake calipers are a vital part of your brakes and they need to provide a smooth, efficient stop. To avoid this problem, make sure that you always use the appropriate brake fluid that is required for your car’s needs. Check to see if there is any rust or corrosion on the brake calipers and apply some rust remover or lubricant to keep them functioning smoothly.

 A noise suppressor needs replacing

One common cause for squeaky brakes is a noise suppressor that needs to be replaced. This device is usually located where the brake pads or shoes meet the wheel. It's made of rubber or other elastomeric material and should be replaced regularly-usually every year or two.

If your vehicle has an anti-lock braking system (ABS), you will need to replace your noise suppressors more often than those without ABS. 

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