If fob is working, its not clear what your current issue is, if any? Are you able to clarify?
just read my post TB . . .sorry it is unclear . . so . . .
I'm pretty sure that all the omegas I have had , have all responded to a locking "re set" on demand .
As in sit in drivers seat . . .turn ignition to position 2 & press a fob button. usually all doors lock & then re open . This car does not do this .
My fob works for both opening & locking . . . all be it from a fairly short range 10 feet ish .
Earlier issue was that fob would not open or close . But after fixing a "stuck"or bad earthed rear door pin switch all worked again & has been fine since .
Maybe the reset will not work unless there has been a fault on the system which then requires the reset to be done . meaning . . .if no fault the reset wont function
but I'm sure on other Omegas I have had it could just be done on demand at anytime
hope this is a bit clearer TB