Quote Originally Posted by shogun View Post
as I had a similar problem with no air from vents, I investigated further on my car and we found no broken stepper motor mount, but the stepper motor did not hold in place with the clips, so we fixed it with zip tie, works like a charm now. Have made a youtube on my spare IHKA unit to show how the flaps work
How it works aircon top flap control - YouTube
Stepper motor IHKA picture by shogun_bucket - Photobucket
Applies to defroster flap and temperature regulator flap, 2 actuators per car
stepper motor IHKA picture by shogun_bucket - Photobucket
Only applies to leg room flap, rear flap, air re-cycling flap and fresh air flap. Six actuators per car
http://www.bimmerboard.com/members/h...m%20holder.jpg
Update: 3 years later the zip tie repair on my stepper motor bracket still works perfect. Advantage is that not many parts have to be removed to repair this. Just the radio came out and some covers outside center console next to the aircon unit and the cover under steering wheel, and one needs slim and flexible fingers to reach the stepper motor then.