i only hear that noise when I step on the brake in ECO or Brake Mode. When it is under normal driving mode, i dont hear that noise. Not sure if thats normal, but i just assumed it's due to the mode you are in and part of the breaking system but this is my first time driving a hybrid. Anyone else?The noise I have is kind of machincal noise from the brake pedal itself. The noise is like something need to be lubricated.