I bought an 04 IS300 about 2 weeks ago and all was well until couple days ago. Whenever I first start the car when its cold there is a noise behind the dash, sounds like it coming from the middle of the dash and it sounds like someone is on a type writer just going to town kinda like a clicking noise. After about 5 mins its goes away and doesn't do it anymore. Any idea's? I am pretty mechanically inclined but I am stumped. Only guess I have is air in the AC system. I also read on another forum something about a servo, but Im not sure what that is.