[6ixSpd]

I'm having some rather odd climate control issues in my '09 328i.

• there is no heat coming from the rear vents no matter how high the temperature is set up front
• in the summer wtith AC on/at max, I can hear lots of air flowing behind the vents but very little comes out from the vents into the cabin. Sometimes I have to turn the AC off for a while before it comes back on at the proper flowing speed, but then 10-15 mins later the air flow is very weak again
• adjusting the fan speed works, except in the point above
• in automatic mode, I feel a lot less air comes out from the upper zone and my feet are blasted in heat/AC in comparison. This can be fixed by using the manual direction buttons.

The fact that the fan speed works as intended leads me to think it's not the FSR. Does it seem logical to think the blower motor or stepper motor would be causing the rest of my problems?

What control heat to the rear vents?

There was an amazing BMW TIS PDF posted on this forum explaining the entire climate control for our cars but I can't find it now :/
Edit: Found the PDF! http://www.shrani.si/f/2z/Eu/2cbNKAh...te-control.pdf

[Flyboy161]

And here is the rest of the manuals...
http://www.e90post.com/forums/showthread.php?t=1360573