I think I need to be a bit more specific:
No CA, no iDrive, there's an option in the BC for automatically locking the doors:
-on a timer
-on a distance meter
-not at all.
The ideal would be on a meter, with the doors auto-unlocking on fob eject. But the specifically mentioned coding doesn't seem to work in that situation.
In lieu of auto lock then auto unlock, I'm currently not using auto lock, which is non-ideal.