Hello All,

I was wondering if someone could help me out. I have an 04 Audi A4, B6. When I turn on the AC, the fans and everything works fine, but when I turn up the temperature up for heat, the middle dash fan stops, but the fan near the windshields keeps blowing.

If I push the middle button for the dash fan, the fan does start to blow air, but it seems to be a mix of cold and warm air blowing through>

Any Idea what could cause this?

Thanks in advance

 

Are you turning up the temp on both sides?

 

Not being funny here, but if you have the front defrost button turned on, way at the bottom of the center Control unit, by the seat warmer button, center console, it will do that....