Had brake pads replaced and because of new screeching sound they replaced them 2 times and same noises

Second time had brake pads replaced and now the new ones have a screeching sound and they finally replaced them again and same thing. Now 6 months later they are beyond annoying and they said it is the rotors? Why wasn't it the rotors when the brake job was done?? And never had a problem before these brakes pads were installed. I feel I need to go elsewhere since I know longer trust this shop.

My car has 69000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
The brake pads that were installed the first time should of been installed with new or resurfaced rotors. Most noises are from uneven surfaces in the rotor and pads that do not match up causing a squeal or grind noise. To do the brakes and help prevent noises you should replace the rotors and pads with quality premium components.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

You may notice a grinding noise after you get new brake pads and rotors. This does not necessarily mean your pads and rotors are defective. Rather, your pads and rotors may be stiff, and you`ll need to break them in.
New brakes need bedding in

If you have recently purchased or new car or have had new replacement brake pads and related parts, you could hear a squealing coming from your brakes. This is just them going through the bedding-in process. The cause for this is normally just the brakes touching the transfer layer.

Normal New Brake Squeal

Likewise, overnight condensation accumulating on the metal rotors can create surface rust that requires a few braking occurences in the morning to wipe away. These parts can make a squeaking noise when covered with surface rust. The noise should subside as you drive.

The most common reasons a Toyota Sienna makes noise when braking are bad brake pads, bad brake rotors, or bad brake caliper. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
If your brakes are new and still squeaking, the fix may be as simple as greasing the contact points. This requires removing the brake pads from the calipers, then applying brake grease to all the contact points. These locations include the backside of the brake pad and any contact points on the caliper carrier.
The metal-on-metal grinding noise you hear is the steel part of the brake pad grinding against the brake rotor, and it`s not good. You need to get a brake pad replacement immediate when they are shot before they also destroy your rotors or brake calipers, which can be a very expensive repair.
Most brake pad compounds will take up to 300-400 miles to fully develop an even film transfer onto the rotors.
It could be that the brakes weren`t lubricated correctly in the service. Or, that new brakes weren`t broken in correctly. The driver may have unintentionally overheated the new brake pads to the point where the brake pads developed a glaze from overheating, which does cause squeaks.
Excessive vibration is the leading cause of brake noise. While a certain amount of vibration is normal during braking, excessive vibration will cause abnormal brake noise.
Your new brakes are likely squeaking as a result of moisture, too much heat, or a normal break-in period. The noise could also be from cheap, low-quality brake pads that you could have fitted. Some other possible causes include worn-out rotors or a brake caliper sticking.
Don`t worry, it`s fairly normal. Squeaking noises from the brakes is common as you begin to put miles on a new car. That noise you hear is the brake pads breaking in. Typically, noises from a new car`s brakes will go away after 300-400 miles as the brake pads adjust to being used.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Had brake pads replaced and because of new screeching sound they replaced them 2 times and same noises
ANSWER : The brake pads that were installed the first time should of been installed with new or resurfaced rotors. Most noises are from uneven surfaces in the rotor and pads that do not match up causing a squeal or grind noise. To do the brakes and help prevent noises you should replace the rotors and pads with quality premium components.

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.

After new brake pads & rotors, SUV has a grinding noise
ANSWER : Hello. It sounds like the brake calipers may be locking up and causing the grinding noise that you are hearing. I would check to see if the caliper hose is twisted. If it is, this may cause the brake fade that you are experiencing. It is also possible that the master cylinder is starting to fail which could also cause the problems you are having. I would suggest that you have a certified technician, like one from YourMechanic, complete an inspection of your brakes and determine if your master cylinder needs to be replaced, or if the brake calipers need to be replaced.

Horrible grinding sound after recently replaced front and back brakes and rotors.
ANSWER : Hi there. Were there shims installed on the old pads? New shims on the new pads? Missing shims can create noise while braking which is why the antiseize worked for a short time. What brand/level of brake pads did your husband install? Usually, the lowest priced pads are the noisiest. The antisieze that he installed is not recommended to be put on brake components as the high temperatures of these parts can cause the lubricant to run and contaminate the pads and rotors. There are specifically designed brake pad shim lubricants designed to withstand these high temperatures; these are the only ones that should be used if needed. I strongly suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts and a possible safety concern. Your Mechanic has several available technicians that can assist you with a brakes are making a noise inspection.

Have replace rear brake pads 6 times in three months.
ANSWER : Hi there:

It’s very possible that you have either a warped rotor that is causing your brake pads to constantly rub or the caliper is damaged; causing the same problem. You should have a professional mechanic complete a rear brakes inspection before the issue gets worse and creates a potential safety issue.

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.

I installed new pads on front/back and new rotors on front only. I am now hearing a rubbing and screeching noise. Any idea what
ANSWER : Hello there, thank you for asking about your 2013 Acura MDX. You are most likely just hearing the material in the new metallic pads seating in to the rotors. The new pads on the rear old rotors will take longer to seat in and may be more noisy then if the rotors were replaced too. If you would like to have a mechanic diagnose the problem, a certified technician from YourMechanic can inspect your car’s noises.

Noise like brake pads over 35 or 40 no noise under 35
ANSWER : It sounds like you may have a weak ABS wheel sensor and a loose wheel bearing. When you hit the brakes, the sensor losing signal may be causing the ABS to activate. You would need to have the ABS diagnosed to see what sensor is having the problem and to check that wheel bearing and sensor. You may have to replace the bearing and have a sensor replaced in this case. I would have a certified technician, such as one from YourMechanic, inspect the noise in person before moving forward with a repair.