Air Controls not funtioning?

[Tswizzle]

I have a 99 4runner limited. It has the electonic air controls and auto climate control. The past two months it has acted Sporadic. I dont ever use the auto climate. I cant even change it from fresh to circulate sometimes. The buttons will just not respond and I am not able to turn the ac on sometimes or even put on the front defroster. I know that you cant do some functions while other are on but this unit is just acting wierd. Sometimes I will get stuck in circulate mode when it is raining and my windows will fog up, I just cant go into fresh mode. Any ideas or do you think I might need a whole new unit? I imagine that a new air control unit is atleast $200-400 bucks. Do you think the clamp in the back is loose or the wires are to crimped or something? Thanks for the ideas!

 

[Jason B]

It's a lot more than that to replace. It sounds like the unit might be getting ready to die. I'd pull it out and check all the wires, etc. It may be something simple like a wire loose.