[V]

This may not have any real relation to your issue but here is something I dealt with on my daily driver, an '08 Mazda 3....
Nephew owned the car and rear ended someone. He blamed it on the brakes, his mom said it was he driving style. Anyways, Insurance totaled it, and I bought it back to make my daily or to flip it. When I drove it right after the accident, I noticed the brakes were very very soft and very low, so I could understand they might have been to blame. They worked, but something wasn't right, even with abs kicking in when called for. I replaced the master and booster, also new rear calipers(rusted badly) and no real change. Upon doing research online, I found out the abs units, mainly the electronic modules, have issues. Those are not sold by themselves, only attached to the abs pump/block. OEM was the only option and over $1200 for the part(+dealer charge to program module to car). Instead I found a company in Canada the fixes the modules. Cost about $300. I sent it out and they said there were some common faults that they fixed but based on my description of my problems and no actual ABS codes coming up on the car, my main problem was with the abs pump/block. I put just the repaired module in and still had the issue. I searched Ebay worldwide and found a New Old Stock complete ABS block in england for $400. Listed for a focus but same part number, my module actually had the ford logo on it. I eventually received the NOS part and swapped the electronic modules since mine was programmed to the car and would avoid a dealer visit/charge. I then looked up how to bleed the abs system and read that I needed a special scanner or needed go to the dealer. Some said to just drive on gravel and slam on the brakes. I decided to try the old school way, kept the battery disconnected as I manually bled them, with my father-in-law working the brake pedal. I then drove the car to see how it was and it was 100% fixed. The pedal was back where it should be and the brakes were super responsive. Its been over a year now and the brakes are still great.


So... maybe its a faulty abs block even though it appears to be working?