I have tried to change the door lock setting to unlock all doors upon entry. In spite of saving it on the PCM as well as saving the key settings, it seems to always revert to just unlocking the driver's door.
Any suggestions what to try to change this setting?

 

Disable “auto memory” in the multifunction display, ensure central locking is checked, and save to your key.

 

Many thanks, that helped clarify things. While the PCM setting on the main display indicated the all doors locked option, that never managed to be saved and always reverted to the driver's door, only.
But that's not what was the setting on the instrument cluster vehicle info settings display.
Even though "auto memory" was already set to "off," I had to manually change the locking setting to apply to all doors. After subsequently exiting the menu and saving to the number 1 option as well as the key option on the door,
it subsequently seems to now work. My wife will hopefully now believe me that I'm not deliberately trying to lock her out every time we go somewhere.