NHTSA Complaint #11613911 — 2010 FORD FUSION

I left my driveway and all of a sudden my abs light came on , I can't remember what it said like and system fault.i pulled over stopped turned car off and back on light hasn't come on since. Then weeks later I was driving and had to brake suddenly to avoid an accident and my breaks gave way. I tried pumping them but they went to the floor and stopping took longer. I pulled into a parking lot stopped.i put it in park, shit off then on they worked fine. But Everytime I apply my brakes when going over bumpy rail road crossings my breaks go to the floor and I can barely stop. Even severe bumps in road when I try to stop causes it.it happens Everytime I go over tracks since the first incident to the point I'm now scared of them.I had a mechanic look at it he said my fluid wasn't low,checked the lines n hoses no leaks. He said fluid was a bit odd in color. He then bled my brakes and replaced fluid.they seemed okay then for 2 months everything was fine til I went over railroad tracks and brakes went soft again. Now they feel softer then before at normal stops but no lights and no abs warning light has come on. He is stumped. I bought this car in 2013 but never did receive a recall notice in 2019 for the brakes or hydraulic.i think my car should be included if that is the problem.