The brake pads or brake shoes are worn and rubbing against the rotor or drum, Disc brakes use brake pads and brake drums use brake shoes. Need to get them replaced before they cause too much damage or you will wind up with repairs or replacement of the rotors or drums also.
A grinding noise when braking can occur when the brake pads are going bad. You are hearing the brake grinding on the metal discs.
You possibly have warped brake rotors on the front. Or Bad Wheel Bearings.
Check the brake pads on that wheel, it sounds like you have metal on metal if the grinding is only when you are stoping or right after you release the brake and start rolling
Pads or shoes worn out. Take it to a brake place.
Warped rotor and worn out brake pads.
Brake linings worn? Wheel bearing?
The grinding noise is the brakes pads proably the noise is in the front. The front brake pads are easy to replace and is a do it yourself sort of thing. My guess is your brake light is coming on because of this condition. I assume your brake light has been coming on for a little while now.
A vibrating brake pedal is an indication of a warped rotor. Noise is common to disk brakes but depending on the noise it can mean that the brake pads are worn out and you are due for a brake job.
It depends on where the grinding noise is coming from. Most of the time the grinding is coming from the brakes and the brake pads need to be replaced. If they've been grinding for a while, the rotors will need to be resurfaced or replaced. Other possibilities for grinding are worn axle bearings, or a problem with the clutch. If the clutch goes out, there will be a grinding noise when you try to shift gears.
You need new brakes
cv axle The rear brake drums may be out of round also.
Maybe it's coming from the rear brakes.