Weird brake sound at the pedal *Squishy, air releasing sound*

I just bought a 2019 Sr5 4runner with 26k miles. I noticed today that its making a squishy sound at the start of every brake compression. I found this YouTube video of the exact sound its making.

Anyone else experience this? It seems like Toyota knows about it, but has done nothing to remedy it.

It's a Carvana car, so I have 7 days to decide if I want to keep the vehicle.

https://www.youtube.com/watch?v=JQBvV4KNh4k

https://www.youtube.com/watch?v=8aYrWlQ8MyM

Two different videos of the same sound! Any input is appreciated!

 

I had a similar sound in a different vehicle so it may not apply. It turned to be a leaky brake master cylinder.

 

I had this sound too in my 2010 T4R. Nothing wrong with the brakes, my truck was doing just fine for 11 years. New 2022 doesn't have it I think or maybe I used to it and don't notice : )

 

That doesn't sound normal to me and does sound like brake fluid is getting passed the seals on the master cylinder piston.

I would try and see if I could insert a wooden skewer or something similar between the rod and rubber booth to see if it comes back out wet with fluid, if it does then there's definitely a leak passed the seals, just be careful not to damage the rubber booth.

 

Mine makes this sound along with many others.

 

Mine makes this sound, it's normal.

 

My brand new 2022 does the same thing since I picked it up

 

What they ^^^ said.

 

Mine does it. Breaks just fine. I think it is pretty normal. Always thought it was anyway. Sounds like some sort of pressurizing...

 

the brakes are bleeding the air in it ....rear first and the front brakes ....
my 2016 runner july 2016 bought it .... bled the brakes ... the rear brake lines are a lot of air bubbles !!
my brakes are great ...
the air is in the brake lines is a poor brake pedal...