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Old 05-04-2009, 05:26 PM   #1
Bad-Man-Wagon
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A/C only blows through FACE vents, WTF?!?!?!?!?!?!?

Anybody
When I turn on my A/C it will only blow through the front vents. When I push the foot-well or windshield buttons it blows HOT air UP and DOWN and COLD air through the face vents. I don't get it.
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Old 05-04-2009, 05:41 PM   #2
zubbie
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Do you have an E34 //M540 with IHKA (automatic climate control)?

More info please. Does it look like this?

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Old 05-04-2009, 05:51 PM   #3
Bad-Man-Wagon
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No it's an E39 540.
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Old 05-04-2009, 06:18 PM   #4
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Quote:
Originally Posted by Bad-Man-Wagon View Post
No it's an E39 540.
Dado had the same problem... I'm sure he'll chime in and tell you how he fixed his.
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Old 05-04-2009, 06:50 PM   #5
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Mark still havent got around to finxing that yet. Since the winter was around the corner i didnt mind the warm air in the feet. But definitely feeling it now with the temperatures in the plus. From what i remember first reset the climate control unit at the dealer. If that doesnt work your unit could be shot, or issue with the heater valves.

Bad-Man-Wagon does you temperature settings work? Mine, regardless of what i put it on 20-32C it does not seem to respond.


Here is the link to the previous threads

http://www.maxbimmer.com/forums/showthread.php?t=113011
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Old 05-04-2009, 07:17 PM   #6
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I didn't know the climate control unit could be "reset". I guess I'll have to try that. Is the dealer the only one that has the tools or what??
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Old 05-04-2009, 09:09 PM   #7
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Quote:
Originally Posted by Dado 540 View Post
Mark still havent got around to finxing that yet. Since the winter was around the corner i didnt mind the warm air in the feet. But definitely feeling it now with the temperatures in the plus. From what i remember first reset the climate control unit at the dealer. If that doesnt work your unit could be shot, or issue with the heater valves.

Bad-Man-Wagon does you temperature settings work? Mine, regardless of what i put it on 20-32C it does not seem to respond.


Here is the link to the previous threads

http://www.maxbimmer.com/forums/showthread.php?t=113011
I though you had... give RMP a call and see if they can reset the unit... if they can it would be cheaper.
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Old 05-04-2009, 09:31 PM   #8
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Quote:
Originally Posted by Bad-Man-Wagon View Post
Anybody
When I turn on my A/C it will only blow through the front vents. When I push the foot-well or windshield buttons it blows HOT air UP and DOWN and COLD air through the face vents. I don't get it.
The doors that control the air directions are controlled by stepper motors. The control unit tells the motors to position the doors so if the references get mixed up then it stands to reason that there must be a sequence to reset and reposition the doors so they are back in synch with the control unit.
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