How do I fix my AC stuck in auto mode?

[Conner]

Hey people, so the other day, I turned on the AC, and it started fine for about two minutes, then suddenly shut off. The fan went into auto mode, cycling through all the vents non-stop, and no matter what I pressed, it stayed stuck on "Auto." It wouldn’t switch to anything else, not even outside air. The dealership suggested replacing the whole system, but I’m hoping someone’s dealt with this before.

 

[LizB]

Hey people, so the other day, I turned on the AC, and it started fine for about two minutes, then suddenly shut off. The fan went into auto mode, cycling through all the vents non-stop, and no matter what I pressed, it stayed stuck on "Auto." It wouldn’t switch to anything else, not even outside air. The dealership suggested replacing the whole system, but I’m hoping someone’s dealt with this before.

Honestly I am very sure it is just a glitch in the system, I don't think you need to do a full replacement. But hey, what do I know, dealers know best, right?