Motor sound when hitting brake pedal

Question about brand new Tacoma. About every other time I depress the brake pedal, whether I'm moving or not, I hear a somewhat faint sound that I can best describe as some sort of small motor that lasts about a second or two. It's somewhat annoying, but just wondering if it normal or not.

 

Are you describing your truck downshifting?

 

Off-Road?

 

The TRD offroad has a hydraulic assist system.. there’s an accumulator pump that runs when you hit the brakes to give you brake assist.

 

Assume you have a Offroad or Pro. It's the hydraulic brake booster assembly. It keeps an accumulator pressurized and performs many functions. It assists you every time you push the brake pedal and it's constantly turning on to recharge the accumulator.

 

That's the electronic brake booster

 

No, it’s not the transmission, it does it when I’m not even moving.

 

yes 2023 OR

 

Sounds normal then, thanks for the replies.

 

I have heard this on my '22 SR5. I only really notice it on hard stops.

 

I must have old ears. I never hear the brake pump unless ABS kicks in. At least I think it’s the pump I am hearing.

 

very light “buzz” sound when initially hitting the brakes.

 

mine dont make any noise

 

Yes, "light buzz" is a much more appropriate way of describing it, thanks.