The climate control on my 1981 380sl just started giving me problems. First, I'm getting a fast, loud clicking sound that seems to be coming from the glove compartment when I turn the heat on.
Second, the fan will then operate on either Defrost or Bi-level mode when the car is cold, and the cold air will come out of the side and window vents. However, when the car warms up, I can only get hot air in the defrost mode. Nothing when the switch is on Bi-Level.
I came across an old post by T.G.Lambach on defective cold air lock out switches. However, before I go thru the trouble of replacing that, I was wondering what the clicking was about and if there was anything else I should look for besides or in addition to that.
Thanks very much in advance.