W124 climate control clicking
 

When the temperature is adjusting (blower changing speed etc.) I sometimes hear a clicking noise from the lower right portion of the dashboard. Any ideas what this may be? If I try to adjust the temperature right after starting the car and the blower is off I hear the same clicking noise.

That is the vacuum electrical box for the pods that is clicking. I have it also when its cold outside on my 260E (it'll click super fast for a couple mins then stop) -- I'm guessing replacement is only option.

Is that the box behind the glove compartment?

Yes, the one that all the vacuum lines go to.