Stuck door

[liffy99]

Picked up my S4 today - an early 2009 model, manual, with lots of toys. But one annoying problem;

I can't open the passenger door from the outside.
I can open it with the inside handle.
The car locks with the key fob after it has been opened, but then won't open with the fob.
I've checked the MMI and all doors are programmed to work (all the others do)
I've tried the central unlocking switch on the drivers door
I've tried double clicking the key fob
I've tried holding the inside handle open while jiggling the outside one, or pressing the key fob in this position - no go

Can't seem to find any definitive ideas . . .

[liffy99]

All sorted. New actuator in - part number 8J2 837 015 A (Audi S4 B8 2009).
£155 + fitting (1 - 2 hours depending on experience of fitter).
No recoding or anything needed.