2013 edge, 111,000 miles, pedal slowly going to floor last week . dealer swapped booster today under customer satisfaction program, (free) and tested master cylinder. says problem still exist. wants $1,400.00 to replace some module under the master cylinder/booster area. ?? no fuking way. going to pick it up shortly and will try the dirt road trick. thanks. I did not see this module available on rock auto? anyone know where I can find it and if I can swap if need be? thanks, TOM okay, UPDATE: back from dealer, new booster but charged me $150.00 for brake system diagnostic. and want to replace HCU ..........nope, drove home but took a dirt road and activated ABS @ about 30 mph. pedal and brakes felt completely normal!! did it in reverse also for good measure, but I am back in business, guessing stuck valve!! thank you!!!!