Being a long-time member of an F-150 forum, I know they have their finger on the pulse of using FORScan (forscan.org) on their vehicles to unlock/tweak features in their vehicles electronic modules. I never really paid too much attention to the threads, but recently I started reading the information more thoroughly and wondered if I could do some of the same programming on my X.
I purchased an OBDLink MX Bluetooth adapter and downloaded the FORScan software (free) onto my Windows laptop. You need an extended license (also free) to be able to change the parameters.
I decided I wanted to try and add the digital speedo (from the 2017), the ability to control seat and steering wheel heating/cooling from the Sync 3 home screen (a '17 feature) and disable to double horn honk upon exit while the engine is running. I also wanted to enable reverse-tilt mirrors but I don't think we have proper codes in our vehicles to accomplish this.
I have had success with the Sync home screen mod, which is great for turning the steering wheel heat on without going into the climate menu. I was able to enable the digital speedo using the code from a 2017 MKX, but instead of it appearing as a separate page in the central DIC (under audio, nav and phone) like the '17, it appears within the analog speedo. This means you can't have LKA enabled and see the digital speedo. I have some other codes from 2017 Lincolns that I will try, as I would prefer the speed to be front and center. Double honk was also extremely easy to disable.
You can also read DTCs with FORScan from all the modules (mine had none at all) and I believe you can see detailed vehicle information while driving but I didn't bother to keep my laptop connected after the code mods.
There are probably lots of other things that can be done (like having the wheel on full heat instead of moderate) but I haven't looked too far into it yet. Unless people have developed a comprehensive database of mods (like the F150 folks have) it's a lot of trial and error and messing about with code.
I know it's kind of long shot, but is anyone else into FORScan on the X or any other Ford vehicle?