so i recently purchased an 07 530xi with the N52, the problem i’m having is that i only get hot heat from the center outside vents, cool air from the middle center vents, cold air from the center defroster, hot air from outside defrosters pointing to the driver and passenger front windows, if i close the vents to make air only come from the center vents they’re a little warmer but not warm at all, if i have just the heat blowing to by feet the air is hot, and the only time i get cold air is on MAX turning the dials when the “heat” is blowing the temperature does not chance i had a similar problem with an audi that i had, and replaced the heater control valve and that fixed it, however i replaces that on this car and to no avail, if anyone had any input i would really appreciate it

 

I can say this. The hvac system really sucks in these cars, there are so many hvac doors to deal with, besides the fact that it may not be getting as hot as it should. These cars don't seen to run hot anyway, with an electric water pump, it's all modulated thru the ecu, a he only thing you can make sure is all your setting in the idrive are hot,

 

you need to read the manual how the 2 center vents operate. They have independent temperature control that is accessible to you when you press the auto or individual temperature control buttons. Then you can use i-drive rotary knob to lower or raise it. I hope this helps.