Can someone help me out with this. Yesterday I got into my 01' X5 and turned the heat on, but no air would come out of the vents not even the defrost. I hear the air blowing but its just not coming thru the vents, i also tried the A/C and still nothing. And yes all vents are in the open position. However, air does come out of the rear vents, located behind the center console. Anyone ever have this happen to them? thanks for any help.

J