likely nothing wrong with your alternator or the car wouldnt start period.Question about alternators for this vehicle. I see online on websites like AutoZone, O'Reilys and Advanced all mention specific alternators for the vehicle with start/stop options. ALl those alternators are $500+ dollars. Amazon have alternators that are for my vehicle but nothing mentioned about start/stop and they are $150. What is the difference?
the little battery under the seat going bad is common. Its likely the reason your start/stop has been disabled
It might be time for the regular engine battery too at this point.
after they are replaced just drive it normal for a couple days so the car can figure it out..
"stuff" wont instantly start working.