Same on going problems with my seat 1.8T 20v, its an 05 plate and drivers door wasnt unlocking with the key or with the remote fob. The other three doors were unlocking though, bought a new door actuator and fitted it then the other three doors wouldnt unlock with fob but drivers door would open????
I could open the other three with internal button so though nothing more of it as my drivers door was opening again, then timing belt snapped, just got it back again and now drivers door wont open again at all and the other three doors open again, doing my skull in to say the least.
Stripped drivers door down and ended up actually having to take the back door off to remove the door lock barrell and eventually got it open, really at a loss as to whats causing this, could it be the convienence module? Thats my next step i think.