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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Brake pressure low and brakes growling

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: Why did my car come with multiple keys?

Your car should have at least two keys, but possibly three. These are: Up to Two Master Keys: These keys can unlock the driver’s door, passenger door, trunk, glove box and rear seat trunk door. They also contain the...

Q: Car jerking at low speeds

The P0125 is "insufficient coolant temp for closed loop operation" This means your engine is not warming up. An automobile engine operates much more efficiently at about 180-190 degrees F so there is a thermostat in the cooling system that...

Q: Brake pedal too close to gas pedal - 2010 BMW 335d

The most practical way to deal with this is to consciously practice moving your foot further to the left when braking. It's not likely any shop would modify your brake pedal to move it to the left - for liability...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.