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: Where are the fuse boxes located?

Your car uses fuses to protect many accessories and circuits. There are several different fuses boxes located around your car that contain both fuses and relays. Understanding their locations will help you troubleshoot certain electrical problems. Here’s the location information:...

Q: 2005 Chevy Malibu, the best engine Chevy ever made.... NOT!!!

delete

Q: How do I disengage the parking brake?

Before driving, you should always disengage the parking brake. If you attempt to drive with the parking brake on, you can do serious damage to your brake system. To disengage the parking brake, press the Release button at the end...

Related articles

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 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.