Beating dead horse, but here goes. We do not have the module that can take the pressures recorded in the BCM and display it in the left MFD. We are actually missing 2 modules that allow A LOT of the function the 150, Escape, Explorer, and Edge have. Examples are the auto fold Mirrors, PSI display, HVAC on the right MFD, and there are several others. The data exists, but the Modules we have are not capable of interacting with it.
As far as how the TPMS works in our trucks. Andy has it somewhat correctly. Our trucks do know the tire that is low, but have no way of telling us because of the module limitation mentioned above. There are PIM in some software that contains the info. Still trying to find the ones with the live data so I can look at it in my DashCommand.
As far as settings. There is a setting in the BCM I believe for pressure set point. I am currently using my HyperTech programmer to modify it, because I don’t have to pull my laptop out to do it. The set point is the desired pressure, and the TPMS light goes off if any tire goes 10 psi below that. Factory set point I believe is 40. I have mine set at 45, so that I get a warning at 35. I have tested this many times because I had a tire with a small pin nail in it and it leaked under certain conditions. So I was able to test out the 10 psi theory and confirm it. I also have several calibrated psi gauges because of racing back in the day.