Check Brake System

[cwbolyard]

While on vacation this weekend my Outer Banks began alarming "Check Brake System." I had plenty of brake fluid, as per online suggestions I unhooked the battery, and still received the warning. The brakes seemed to work fine UNTIL I put it in cruise. After some time in cruise the brake pedal would stick and not move until I pushed very very forcefully and it broke free and worked again like normal. Has anyone run into this issue? Thanks

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[Copperhorse73]

Happened to me. It’s a known issue (2.3 only I think). There is an open TSB on it.
https://ford.oemdtc.com/7474/2-3l-i...-module-and-firm-brake-pedal-2021-ford-bronco