so yesterday was the 1st time the car really got warm in the sun..........noticed the coolest i could get from the vents was ambient temp. last service (oct 2011) audi confirmed something like -5degC from the vents, so was ok then. So my question is: Where do i start looking for the problem? Is there somewhere in vcds i can look for an HVAC temp diagnostic?.......what are the other likely options i have? (other than paying someone to look at it....which i would prefer not to!) Any advice is much appreciated......would like to get it sorted before a possible hot summer!