Hi, I'm new here and just got a 2008 E60 BMW 520D M Sport. I just have a quick question. The heater works fine inthe center vents and driver vents. The drivers side is less warmer, but the back center vents only blow cold air. There is a plenty of air pressure coming out of the vents but its cold. I've tried adjusting the heating and temp but it does not work. In iDrive I've only got the temp adjsutment for the front center vents and not any other. There is only 1 knob on the rear vents to open and close the vents (not a second one for heat) Is there a setting I'm missing or doing something wrong? Thanks
