BobbySpeed

I have a 2006 Cayenne that has been very good to me, until now. Yesterday I turned on the A/C and the car wasn't cooling off that well. I checked the center vent and cold air was coming from the left and passenger vents, but driver side and driver side of center vent had cold air coming out.
What gives?

XR4Tim

I'll assume that you have adjusted the passenger's side temperature setting. There is a temperature blend door in the A/C box behind the dash. There is a servo motor which operates this blend door, and sometimes they stop working.

BobbySpeed

Yes, I changed the temperature, closed both the passenger side center and passenger vents one at a time to see if it made a difference, I tried closing the left center vent, and I tried closing the driver vent.

XR4Tim

If you can scan the system with a PIWIS or Durametric, it should be able to tell you if there's a faulty servo motor.

BobbySpeed

Unfortunately I don't have a PIWIS or Durametric to check.

BobbySpeed

I guess it is time to buy one.