Just a follow up note. I did find my climate sensor. It is between the radio and the far right dashboard switches. Looks like a small vent the same size as the switches and the farthest right in this array. I cleaned it, but no change. Lee was right on. It turned out to be the driver's side tempatur...

Thanks Y'all. These are some excellent suggestions. Just to clarify, it does have automatic climate control. I already switched out the ECC. I will go in and try to inspect and clean the climate sensor through the radio slot and take a look at the damper motor. Hopefully one of these two approaches ...

Thanks. How do i get to the climate control sensor on the driver's side? What are the 'oh shucks' handles? I will give it a try.

I have a 2000 S70. The AC works fine. Blower motor strong. Heater works on passenger side, but not driver's. When you adjust the driver's side temperature up you can here the damper motor click , but you still get cool or cold air. The same treatment on the passenger side changes from cold to hot ai...