I have a 2019 Sport HSE and there is a rear air quality fan vent on the right rear quarter panel post, right behind the rear passenger. The fan randomly came on the other day and won’t go off. I turnEd the climate system completely off and it still runs. It seems to operate completely independent of the a/c system. It’s kind of loud and very annoying to the person in the right rear.
I checked the owners manual and it mentions the fan and how to turn it off but my model doesn’t have the menu buttons listed in the operation to turn it off.