Noise from the front Brakes

Causes of brake squeal include:
* Vibration is the source of most brake noise. When noise is heard it is usually due to the vibration between the pad and the rotor, or failure in other brake hardware. Hardware should be replaced with every brake job.
* A noise may also be heard if brake †wear’ indicators or †sensors’ touch the disc brake rotor. When this occurs the †sensor’ often emits a high pitch noise to alert that brakes need immediate attention. If this occurs have the brakes checked immediately by a certified brake system specialist.

If you hear grinding sounds when you apply the brakes:
* The most common cause for this condition is when the lining has worn past its service limit and the metal plate is contacting the rotor.
* Some drivers may experience a grinding noise only when the pedal is slightly applied and the vehicle is moving very slow (such as slightly releasing the pedal from a stop position). This operation is normal.

Hello,

One of the most common cause for brake noise is worn pads.
The pads have a metal tab that when it has worn down to a certain level it will touch the rotor and make squealing noise.
Since the vehicle has been sitting for sometime, depending on the weather, there could be surface rust build up on the rotor.
So, as you apply the brake the noise is due to the fiction between the pad and the rust.
If the noise is due to the rust, then it will actually go away after the rust fall off. Which will happen as you drive.

https://www.2carpros.com/articles/how-to-replace-front-brake-pads-and-rotors-fwd

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.