Skip the auto shop - Our mechanics make house calls

Q: Brake pressure low and brakes growling

asked by on

My brake light is on. In addition, my brake pressure is low and my brakes make a growling noise.

Sounds like you brake pads are down to the metal. Brake pads have a metal backing plate, but the part that actually contacts with the rotor to stop your vehicle is a friction lining usually made up of an organic material and some soft metallic fibers. When this lining wears out totally, the metal backing plate makes contact with the rotor causing a grinding noise like what you are hearing. The part that squeezes your pads onto the rotor is called a caliper. The caliper has a piston that is hydraulically driven when you step on the pedal. As the pads wear, the caliper requires more fluid to take up the space of the worn pads. This will cause a low fluid condition on the master cylinder turning your light on and the worn brake pads cause the low pedal feel. By now, I suspect there is damage to the rotors as well as a possibility that the caliper might be leaking. A complete brake inspection is necessary to see exactly what is damaged and what needs replacing.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I think someone is messing with car without keys, steer wheel moves clockwise while I'm driving, something burns my eyes.

Hello there. To be honest, I wouldn't begin to assume what's causing the smell in your vehicle that is causing medical side effects; as that would simply be irresponsible without being a medical expert. I can say that it is...

Q: My car cut off on me and now it won't start. 2001 Toyota Solara

There are many possible issues that will keep a car from starting. There could be a bad fuel pump, a wiring problem, a failed sensor (such as the mass airflow sensor or an oxygen sensor), or any number of other...

Q: What parts would I need to fix brake fluid leaking from my front front inside wheel?

Hello, thank you for writing in. While replacing the brake pads and rotors is standard service after they wear down, they would not cause a fluid leak. You likely have two separate brake system issues happening at the same time....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.