brake pedal squeaks when pressed on 2005 mercury monterey on 2005 Mercury Monterey

brakes are good. the sound is just a pain! sounds like something needs WD 40 but where.

Asked by for the 2005 Mercury Monterey
Try spraying wd40 up under the dash where brake pedal pushes a shaft that goes into fire wall. There is a rubber grommet that gets dry and squeaks.