Link to the instructions in case anyone is interested: https://performanceparts.ford.com/download/instructionsheets/FORDINSTSHTM-9603-REB.PDF
ProCal 4: https://performanceparts.ford.com/download/instructionsheets/FORDINSTSHTM-12655-F.PDF
Just found this on 5 Star Tuning site:
https://5startuning.com/product/2015-2017-f150-ecoboost-2-7l-motorcraft-iridium-spark-plugs-set-of-6-sp-578/
Part number SP- 542 has been superseded by Part number SP-578
It’s the MPG screen on the left display. There will be three Info screens you scroll through... one of them will tell you why it’s not engaging. Example: Start/Stop disengaged due to vehicle charging.
Check page 99 in the owners manual.