You will need to do an ABS Bleed - I do find that even Pro mechanics do not know how to do ABS Bleed. I was at a Tire kingdom to do a $120 Brake fluid flush and they couldn't get a good pedal. . The Ford dealer was the only ones that could do it. But I don't trust them. I was sure I was going to end up with all new $900 ABS unit + Master + programming new ABS + ABS Bleed = ?? $1500. I had soft pedal and random traction control codes. after used HCU no more codes
I did put in (2) masters and I think I did not need any masters in hind sight. The master were only 75 bucks. I got a used ABS unit with brain/HCU combo $70. I installed all - the 3 bolts on bracket - very difficult to get at. the (6) brakes lines are easy - the master cylinder is easy. I got a ABS code after install that I did not have before. (the brain needs reprogramming). So I pulled out and put my brain on used HCU unit and bled up top and then at each wheel. Had decent brake but soft. .
I bought a Foxwell N630 Lite OBD2 scanner and ABS after watching a video on YouTube that had auto bleed procedure. Got it next day from Amazon $139. I pulled up ABS put did NOT have auto bleed like the video. I went to my 2003 Ford E350 van and that did have Auto Bleed procedure when I hooked into OBD2.
I went back to my EDGE into ABS settings of Foxwell and it had separate Tests. One was to run ABS hydraulic pump - I did that and pump came on pedal was better after. I will try the same with bleed tonight. Air gets trapped in the ABS. I think my HCU had a hung up valve in - This Foxwell has individual test for all ABS functions so I may have been able to sake the valve loose before I did nay of this work - who knows. I also tried on my wife's Honda CRV and it had different ABS stuff - so its not universal ABS scanner.