Thanks rog747, and all who replied.
Clearly I didn't think this one through at all, before asking the question.
Of course autoland would have to be checked out after servicing any of the systems or sensors related to it.
And from the video, it would seem autoland procedure touches most of them.
I also got the answer to a question I've asked myself when we're sitting at WRG, waiting for the fog to lift.
Landing the plane is is not the challenge (if WRG had ILS).
Finding the gate without bumping into something is.