November 3, 2023 - YouTube
Sometime it happens while I brake. Sometimes after, gets worse going downhill especially with weight in the car. Happens every few miles and the noise ranges from short bursts to long screech. Any thoughts ? 215k on the 2004 4Runner. Gotten worse over the last year. My assumptions point to master brake cylinder and or booster, but it is so loud its weird and I'm lost. Also, braking is fine otherwise, and no codes or dashboard lights. Also, no leaks fluid is maintained at proper level, I have even done brake flush and bleed too. Attached a video.