I don't think you'll have to enable them to take an update. I certainly had some of those disabled at the time (some obviously are carrier-specific).
TBH I have disabled Google Now. A lot of the functionality is US-specific as I understand it, and my personal policy is to control the information Google routinely collect on me, which doesn't really seem to sit well with it. So sorry, but I can't personally back you up on that one.