There is a TSB for this. I will look it up and post it here.
In the mean time- I had a 2015 ST1 that had this same problem. I brought the car in when it was new and they said "oh yeah, this is just how the vents work". A few months later, when the TSB came out, I went back and they said "oh yeah, there's a tsb for this... we're going to replace the hvac control module in the dash"
In the mean time- I had a 2015 ST1 that had this same problem. I brought the car in when it was new and they said "oh yeah, this is just how the vents work". A few months later, when the TSB came out, I went back and they said "oh yeah, there's a tsb for this... we're going to replace the hvac control module in the dash"