I hear a lot of noise coming from my brakes

Since around 20,000 miles, the brakes on my 2009 Nissan Sentra have been noisy. The squeaking stopped after I got it serviced, until recently. The noise was barely noticeable at first, but it’s now squeaking worse than ever! The car only has 45,000 miles on it. What could be causing this problem to keep popping up?
Experienced mechanics share their insights in answering this question :
Your vehicle would need to be inspected for glazed pads and rotors, which are the main cause of noisy brakes. Some pads and rotors can get glazed from overheating due to low quality replacement parts or excessive rotor heat build up, which is caused by excessive braking or panic stops. There are some aftermarket pads and rotors that claim to reduce or eliminate the noise from brakes. You can expect to pay a premium price for premium pads though. An inexpensive pad or rotor may not give your car a quiet stop but should meet all of the manufacturers guideline specifications. The only way to eliminate noise is to replace the pads and rotors. The quality of replacement parts will determine the the level of noise you experience.

How to Identify and Fix Common car Problems ?

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Sometimes, new brake pads need to be broken in. Other factors that can contribute to squeaky brakes include dirt and debris on a brake pad, a damaged brake pad backing plate, a bad brake shoe, or weak brake shoe return springs. With so many possible causes, a squeaking or squealing noise can be difficult to diagnose.
The most common reasons a Nissan Sentra makes noise when braking are bad brake pads, bad brake rotors, or bad brake caliper.
If the humming noise is a high pitched hum, or more of a consistent squeaking sound, it`s possible that it is caused by a build-up of brake dust on the brake rotors. In most cases, this is not a cause for concern, however, it could also indicate that your brake pads are low and about time for replacement.
If you experience loud grinding noise when you apply your brakes, immediate attention may be required. Stop driving immediately and have your brake system evaluated by a professional brake technician.
Squeaking sounds could just mean you`ve got cheap brake pads or hot brakes, or they could be a sign of a bigger problem. Brakes that are overheating can cause a light squeaking, especially when the brakes are still cold. But if your brakes are consistently squealing, you should get them inspected.
The most common cause for brake noise is thinning pads. If you hear a grind or loud shrill, you`ve likely worn your pads down. Because the brake pads are worn down, the pads and rotors are now metal to metal. At this point, it is imperative to replace them.
The most common cause for brake noise is thinning pads. If you hear a grind or loud shrill, you`ve likely worn your pads down. Because the brake pads are worn down, the pads and rotors are now metal to metal. At this point, it is imperative to replace them.
Worn down brake pads

The most common reason brakes squeak is that the metal wear indicator on the brake pad touches the metal rotor. This is normal and expected from wear over time, but does indicate you should replace your brakes soon.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

New front pads & rotors (2mths) and hear a grinding noise when coming to a slow gradual stop. What could be causing this?
ANSWER : Hello, thank you for writing in. The last technicians that worked on your vehicle are not wrong. There are certain types of brake pads that will make a squealing noise when the brakes are applied. These are typically made from a metal composite material. You can always research the brand they put on and find out more about the brake pads. This would give you a good idea of what you should reasonably expect. Are the brakes exhibiting any other types of symptoms? If there is any sponginess in the pedal, shaking or vibrating, hard stops, or other symptoms then there may be more cause for concern. In situations like these, if you are expecting to drive the vehicle a longer distance in the near future, it is recommended that you get a second opinion. Our technicians can dispatch to your home or office.

When I put my foot on the brake my back left brake light goes off, when I take it off the brake the brake light comes on
ANSWER : I would suggest trying to disconnect and reconnect the wiring to the rear lights. I have seen these older Toyota vehicles rear lighting short out on the lights themselves due to the way the light circuit was made on the lamp housing. Look at the housing circuit on the light to see if one is touching another, and that could tell you why it is malfunctioning. There could also be a problem with the brake light switch. If you are not comfortable dealing with wires, I recommend getting in touch with a certified mechanic who can look at your brake light issue for you to see what’s going on.

Car making popping noise when braking.
ANSWER : After seeing the video, you will need to have the lower ball joints and bushings checked to see if one or all need to be replaced. You should also have the exhaust checked to see why the engine is so loud. A professional mechanic, such as one from YourMechanic, will be able to thoroughly conduct tests to diagnose your vehicle’s popping noise and make the appropriate repairs.

EPC light on 2004 Jetta. Code said brake switch faulty, but brakes lights worked. Replaced brake switch, now no brake lights.
ANSWER : Hi there. The first thing that pops in my mind beyond of what you have listed is perhaps the electrical harness attached to the brake switch. Perhaps the harness itself is damaged or you have an exposed wire, loose ground wire somewhere. You might want to have a professional mobile mechanic come to your location and complete a brake lights not working inspection to help you diagnose this issue.

My ABS light and occasionally my emergency brake light is coming on and my brakes occasionally make a grinding noise when coming to a stop.
ANSWER : Hello there, many faults will cause your ABS light and emergency brake light to be seen on your 2009 Chevy Aveo5. When the ABS light is on it indicates there is a fault in the ABS system. This fault will leave a code stored in the ABS computer which when read will narrow down what is going on. Common faults are a wheel speed sensor, ABS module, or a wiring harness fault. To avoid any unnecessary repairs, a qualified technician such as one from YourMechanic will be able to diagnose your ABS light and make any repairs required to resolve the issue.

Rear brake squealing noise goes off when brakes applied.
ANSWER : Hey there. If the noise was not there before you replaced the brake pads on your 2014 Audi A4, you might want to try replacing the caliper clips and using a good quality brake lube anywhere the pads make contact with the caliper, caliper piston, and or bracket. If you need to have this looked at, an expert from YourMechanic can come to your car’s location to diagnose the squealing noise and perform the appropriate repair.

Low brake pedal and anti-lock brakes are not kicking in.
ANSWER : The brake pedal is working to stop the vehicle, but there may be air in the controller unit causing the ABS brakes to not function. I recommend bleeding the brake system from the farthest location from the master cylinder to the master cylinder including the ABS unit. If the brakes are still spongy after a full bleed, then the controller will need to be replaced. If you need further assistance with your brake pedal being spongy, then seek out a professional, such as one from Your Mechanic, to help you.

new brakes squeak while moving, but noise stops when applying breaking pressure
ANSWER : Hi there. First off, you have my favorite year of Corvette – the 62’ is awesome! Second, the brake squeaking issue is likely due to excessive brake dust collected in between the rotor and the pad or perhaps a wheel bearing that is starting to show early signs of normal wear and tear. It’s also possible that the pad is lightly dragging on the rotor. This can be caused by excessive brake pressure or a caliper or brake booster that is not working correctly. The best thing to do is spray off the front wheels and behind the wheel first, to knock off any excessive brake dust to see the noise goes away on it’s own. If it does not or the noise is progressively getting worse, have a professional mechanic complete a car is making a noise inspection, so they can try and replicate the noise and pinpoint it’s source, so the right repairs can be made.