Why are my new brakes making a buzzing sound?

Asked by May 20, 2017 at 12:40 AM about the 2004 Toyota Matrix XR

Question type: Maintenance & Repair

I had my car serviced at a Toyota dealer on May 5, 2017. They changed
the tires (from winter to four season), did an oil change, cleaned the back
(drum) brakes, and changed the front (disks and pads) brakes for new.
About a week later, I hear a buzzing sound coming from the front brakes.
This only happens when I come to a full stop (not when I slow down on a
highway) and only happens sporadically, not all of the time. The sound is
buzzing, like someone is rubbing against the treads of the tires to stop the
car. The sound only happens when i apply the brakes to stop and
disappears when i am stopped or let go of the brake pedal. Any ideas?

2 Answers


Normally brakes don't Buzz. Squeak, squeal and click, but not buzz. Have the shop mechanic reinspect the work and go for a test drive with you to determine the cause. I'd only be guessing at this point, but something might be loose.

Thanks Tom, I had brought back the car to the dealer that had changed the brakes and at the end of the test drive was finally able to hear the buzzing noise. They kept the car about half of a day and determined that the PADS that they had installed were defective. They were changed under warranty. Thanks for your advice! Much appreciated!

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