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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 02-07-2013, 06:29 AM
Pwrdawg Pwrdawg is offline
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Location: Uk
 
Join Date: Feb 2013
Posts: 1
Mein Auto: 2001 528 I
Question 528i Air Ventilation System

I just bought a 2001 528i and have noticed that I am only getting air flow out of the floor vents regardless of the direction setting I.E defrost or main vents. Even when I select high defrost I still only have air flow onto the floor section. Any and all ideas will be welcomed.
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  #2  
Old 02-07-2013, 06:44 AM
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Fudman Fudman is offline
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Location: Sudbury, MA
 
Join Date: Apr 2007
Posts: 6,044
Mein Auto: '02 530i Sport auto
Do you have the IHKR panel? If yes, the center knob, which Bently calls the air distribution control is disconnected from the Bowden cable. Bentley says "Bowden cables attach it to the air distribution flaps in the IHKR housing". Hence, you may have a cable failure or it has disconnected somehow. The instructions for removing the IHKR panel are:

"1. Remove switch panel below IHKR panel
2. Push out IHKR control panel by reaching through switch panel opening
3. Disconnect electrical harness connectors
4. Disconnect Bowden cables from back of panel

CAUTION - Note color coding of Bowden cables. When reinstalling, reattach cables to correct control levers."
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  #3  
Old 02-07-2013, 08:25 PM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 19,181
Mein Auto: 02 BMW 525i M54 automatic
The OP will learn a lot about the IHKA system by clicking on a few of these links, found by typing /ihka F3 in the bestlinks:
- How to remove the IHKA air conditioning control panel to clean the circuit board (1) (2) (3) (4) with removal of MID, HVAC/IHKA, Business CD player (1), & dashboard trim (1) & how to remove the trim and bracket holding the MID & HVAC/IHKA panels (1) (2) or to replace the IHKA button (1) & how to check the IHKA sampling fan (1) & how to change OBC MID IHKA KTMP temperature from degrees Celcius to Fahrenheit (1) (2) (3) (4) (5) (6) (7) (8) & how to diagnose lack of HVAC/IHKA heater core heat with cooling system (auxiliary pump) at idle (1) & what is this thing (HVAC/IHKA solar sensor) in the middle of my dashboard by the windshield (1) (2) (3) (4) (5) (6) (7).
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Note: Your mission, should you decide to accept it, is to add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need, in seconds!
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Old 02-26-2013, 08:13 PM
SDPD4935 SDPD4935 is offline
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Location: California
 
Join Date: Feb 2013
Posts: 5
Mein Auto: 535i
I just purchsed a 535i. My air flows from all vents, however, the air is warm. Even when it is cool outside, the air is still warm. Are there others with the same problem? Dealership told me that the design of the air flow intake near the engine is the cause and it is the new normal. Am I the only one or is it the new normal?
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