I can lock all doors from any door but can only unlock the front from the front and the back from the back or the central switch.
Does the central locking button lock & unlock all doors?
Do you have a remote fob? Does that lock & unlock all doors?
Do you have a tailgate or barn doors?
If I use my key in the drivers door, it locks & unlocks all doors, however I can't try the rest of the doors as the damn key doesn't work in them, so I can't test this for you mate....anyone?
Can we please have the full size picture of your avatar first then we might get a few heads switched on....LOL.. then again...( especially for Zira's...but for the benefit of all...LOL )