FINALLY:
A guy commented on my thread yesterday that his tile button was working correctly. I asked him how but unfortunately he didn’t remember the setting. But said he used CDA6 to do it. That was enough to relight the fire to get this working 100%.
I compared backup files from a 2022 TRX and a 2023 TRX, both similarly equipped. This was a breakthrough as it isolated the differences down to JUST the cluster (and a few random option differences that I filtered out).
One line that stuck out was this:
620132C0025B211D
601004
The “6” after the “D” is a “2” on non-digital cluster trucks. So on a whim I altered the backup file and loaded it up. Bingo! Better to be lucky than good sometimes.
I then had to ask Jimmy to check on CDA6 to see exactly what I changed and it was this setting:
“ECUConfig 3: Unique Core Steering Wheel” changed from “no” to “yes” by swapping the 2 to a 6.
You can’t access this setting in Alfa so it’s another one requiring an altered backup file to load but I’m thrilled it’s all done now!