This has been an off again on again problem (more off than on thankfully). Sometimes whenever I press the brake in it will make a crunching noise. The noise itself seems to be originating from the pedal itself or behind it and not from the brakes, calipers, etc. Ford looked at it a few years ago and said it was nothing to worry about. I'm not worried about it, just annoyed. Any ideas as to what it may be?