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my interior air cotrol will not move to defrost widscreen trouble is in the distribution box how do I remove it for repair

@sanbach , Ted, I do not think the whole distribution box has to be remove, maybe just a couple panels from under dash and maybe the glove box(link below) to access what they call blend door actuator. Visit your local Toyota parts department and ask very nicely for a picture of the blend door actuators/servo motor locations. They may print you one showing where everything goes. Also since some of these are electrically controlled I believe, there should be a trouble code to tell which one is bad because there may be a few, some of the auto parts suppliers offer free code reading like Pepboys, Nappa, Advanced auto parts,etc and some of the guys are very knowledgeable and may have seen the issue often and put you on the right track and also may have a diagram. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. https://www.youtube.com/watch?v=0HI7quNj