when im driving the brake light goes on and my buzzer goes off, the brakes are good i just did them the other day when i got the car on the road, could it be a faulty sensor on the mas cyl?,

 

The buzzer is for low coolant, low oil and redline. There should be a corresponding warning light for low oil or coolant. Check them immediately!

The BRAKE warning light is for handbrake on and low brake fluid.

 

its for the brakes, but the fluid aint low......

 

There is no buzzer for the BRAKE warning light, only the ADD COOLANT and OIL LEVEL warning lights. Are the light and buzzer coming on at the same time? If so it sounds like someone's messed with your warning lights, and you should check the oil and coolant like I said.

 

the brake light comes on.... when it does the buzzer goes off........

 

Your warning lights are messed up. That definitely shouldn't happen.

The buzzer will only sound for low oil, low coolant (in the radiator) or redline.

Exactly when does this happen?