Quote Originally Posted by Warnie View Post
You also may find that you will need to select nuetral to put it from 4h to 4l. As a rule I always stop when changing the transfer gears. Just another thing that can distract you whilst driving.

You should have auto-locking hubs, the locked position you speak of is where you can manually lock the hubs with a tyre iron. I can't remember why but it is better to manually lock the hubs even if they are auto hubs, something to do with reversing and them being stronger in this position, but don't quote me.
Hey warnie im quoting you! lol. In the manual it says that the reason you can fit a tyre iron onto the hub is just in case the auto system fails and wont go in or out of 4wd, you can manually do it with the tyre iron.
Im fairly sure that it is safe to change from 2h to 4h up 60km/h. It should say this in the manual too.