Any thoughts on why my a/c is blowing cold on the passenger dash vents, but warm air from the driver side dash vents? This just started today. Thanks.

 

Sounds like something may have gotten into the vent system and blocked the door action. May have a door actuator gone bad.

 

Thanks Pete. I tested all three of the door actuators and they are working fine. I read somewhere else that low freon can cause this problem, since the evaporator has two sides to it, each feeding a different set of vents. It's been working fine for the last few days, and winter is coming shortly, so I'm not going to worry about it until next summer.

 

Jaden, whatever happened with your air? I have a 2015 mustang GT convertible. No sounds, no indication it just started blowing warm air on the driver side and COOL air on the passenger side. I have 43,000 miles. UGGGGG it is hot in Louisiana right now!

 

Being as Jaden's last activity on here was well over 4 years ago, I wouldn't count on getting a reply from him anytime soon