We have had the "aircon won't blow through the dash vents" problem twice now. The first time it was water in the plenum shorting out a motor that opens the door to the vents. The second time it was the IHKA module gone bad. Both were spendy repairs. Both times the problem was intermittent - one trip the system was fine, the next defroster only. No idea about the iDrive issue.
Current roster: 2007 X5 4.8; 2003 CL55 AMG; 1971 Mustang; 1968 Triumph Spitfire; 1966 Mustang
Past BMWs: 2004 E46 Convertible; 2000 E36/4
Last edited by weasel_atty; 07-26-2012 at 10:06 AM.