This forum does it again!!
Well, after searching this forum for info on a central locking fault on my 166, I have cured the problem with 8 squirts of WD40.
Just squirted some around the door lock pins, the plastic bits that pop up and down to show you the door is locked/unlocked, and all my central locking/alarm problems are solved.
This must be one of the easiest fixes ever on an Alfa.
This should be on your service schedule.
Been driving me mad for ages, and I can fix anything!!
Keep up the good work.