for that many codes to pop up it is either the worlds worst maintained XF (not likely lol) or you have a electrical issue that is affecting the signals going back to the ECU such as a grounding problem or voltage regulation issue ...

DRB 3 is your only hope now ... if they have a good tech he can figure out exactly what's going on with that scan tool.

PS... keep us up to date, curious as to where the electrical gremlin is hiding...