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'13 RX 350 Brake Pedal Electrical Buzzing Noise

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Old 01-30-19, 07:45 AM
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bdm4150
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Question '13 RX 350 Brake Pedal Electrical Buzzing Noise

Hello!

I have looked around and I do not see any posts that match the sound that I am hearing in my 2013 RX 350.

After you have been driving the car for a short distance and let off the gas - you can hear an electric buzzing sound under the dash by the brake pedal. You can also hear this same noise when you have the brake pedal pushed down and start letting up. The brakes feel normal, there is no issue with the performance, it is just annoying if you do not have the radio on to cover up the noise. As far as I can tell I cannot hear this sound under the hood, it's just under the dash inside the car.
This is happens every time you push the brake in OR let off the gas and the car starts slowing down on its own.

Wondering if anyone else has the same issue, or knows what is causing it?
Old 02-08-19, 04:19 AM
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SilverRX30
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I hear something similar in my 2014 RX350 which is louder than in our 2015 RX350.
Kind of an annoying sound. Never heard in in my old 2007 ES350 or in any other Toyota we have owned.
The sound comes from near brake pedal and sometimes you can eliminate it by gently easing up on the pedal slowly.
I wonder if others have heard this?
Old 02-09-19, 05:21 AM
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Ceclex
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Hi,

I have the same buzzing noise in my 2015 RX however the noise only appears when its below zero degrees outside. Its quite annoying.
Old 02-10-19, 06:54 PM
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heshamos
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Same here. It was -30c where I live and it made that same buzzing sound. I haven't driven the car for 10 days and the brake fluid was flushed recently. I thought it could be air in the system. The brakes work just fine. I'll follow up on this and feedback!
Old 03-21-19, 09:13 PM
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ducttape
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Brake booster electric vacuum pump.
Old 04-18-19, 08:06 PM
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Ridlerh2
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Replace the Vacuum Check Valve at the brake booster, and grommet.

No more buzzing
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