Originally Posted by nailer335
If I recall correctly, a worm/cog interface was said before to be made of a type of plastic and could benefit from being made of a stronger material?
There is a picture of this in post 21 here http://www.e90post.com/forums/showthread.php?t=710244
Also if you google "Transfer Case Actuator potential free fix!" you will find a post on another site that has some pictures from an X3 actuator motor failure but I don't know if ours is the same.