Hissing sound from center console
My car has developed a hissing sound coming from the climate controls in the center console. In the past the hissing sound would occur briefly when adjusting the temperature or the AC, but now the sound is relatively constant. The hiss stops when you turn off the AC, but otherwise it is fairly constant.
My guess is that the thermostat for the AC has some sort of pneumatic linkage. The thermostat in my office makes a similar hissing sound when you adjust the temperature setting.
My hope is that something minor is stuck and will resolve itself. My fear is that if I don't address the problem soon, it may cause some bigger failure.
Anyone experience anything like this? Any thoughts on whether I should give it time, or take it in right away?