Hi I’ve got a MK7 Golf R 2015 it’s got dual climate control. I’ve only noticed it today but the passenger side is blowing cold & hot air. Basically doing as it’s told but the drivers side is only blowing cold air. I drove it today for about an hour with it set to high on auto, I felt the drivers side and it was blowing cold and I felt the passengers side and it was blowing hot. I then put them both on cold and the passenger side went cold and the drivers just stayed the same as it was cold. What could the problem be? THANKS IN ADVANCE!