What changes
Module 09: object 0A6A, byte 0, bits 5–6 = 10 (0D08, byte 3, bits 1–2 on a coded module). The 'Unlocking: all doors / driver's door' item in the central locking menu — adjustable.
Details
The 'Menuesteuerung ZV Entriegeln' adaptation of the central electrics: how the MMI shows the choice of which doors the first fob press unlocks. The history snapshot of the object shows the factory setting. The bits are not yet confirmed by a write on a Q3 F3. The map comes in two variants — object 0A6A (module without long coding) or 0D08 (module with a filled long coding); Odyx uses whichever object the module has. Access code 31347; the module accepts changes only with the bonnet open.
Other options
This is one option of the “Unlocking item in the MMI” setting: only one can be active.