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#1
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9C4A – stepper motor dynamic pressure
Assuming that this air leaking past a vents that is not getting opened all the way? With no A/C on no Air from middle vents left/right sides Defrost blows hard and hor Already confirmed iDrive settings get the following BimmerGeeks ProTool Date: 11.23.21 11:26 AM Vin: 4USFE435X7LY79830 Chassis: E70 Model: X5 3.0si Engine: N52 Body Style: off-road vehicle ++++++++++++++++++++++++++++++++++++++++++++ JBBF [JBBF70] | A6CF: AUC sensor <<<<---- Ordered new one JBBF [JBBF70] | 9C69: Rear-cabin stratification adjuster KLIMA [IHKA70] | 2007 x5 9C4A: Dynamic-pressure-flap motor KLIMA [IHKA70] | E729: No message (automatic air recirculation control sensor, 0x2D0), receiver integrated automatic heating / air conditioning system, transmitter JBE <<<---- Related to AUC Sensor? KLIMA [IHKA70] | E728: No message (rear stratification, 0x2D3), receiver integrated automatic heating / air conditioning system, transmitter JBE <<<---- Related to AUC Sensor? +++++++++++++++++++++++++++ Found this on xoutpost https://xoutpost.com/attachments/x5-...b_64_07_07.pdf and also https://ia801005.us.archive.org/11/i...ntrol%20WB.pdf Is this #2 on page 16? Dynamic pressure compensation, actuator motor https://www.fcpeuro.com/products/bmw...eo-64119321034 Thanks in advanced (Still trying to get ISTA to run on my Laptop) |
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#2
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Do you have any diagnostic tools like INPA, ISTA or OBD readers/apps?
Edit: Ooops, just read the bottom of your post. If you can get ISTA running you can test all the various ~13 flaps and read their states.
__________________
2007 X5 4.8i - 12/06 Build - Silver/Black - 3rd Row |
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#3
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Yes I do, BimmerGeeks ProTool Right now
Have tried several times without success to get ISTA running on a laptop. I get it installed but when connecting to the car it does not read or no communication. I know that would be really helpful. Can you recommend a link with up to date instructions (win10) and links for download? Also might be the cable that I am using? https://www.bimmergeeks.net/product-...dition-k-dcan1 Will that one work or do I need Last edited by HellRazor35; 12-07-2021 at 01:06 AM. |
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#4
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^ That cable looks good. I would trust it for the E70. Getting ISTA running can be a bear. I recently got it working on my 3rd attempt. The software packages have gotten better in terms of "ease of install." PM'ing you on possible source.
Your AUC sensor will take care of the A6CF. 9C69 could be tougher. In the E60/E61 there is a wire that gets pinched/frayed inside the center console that causes the symptoms you describe. I went through that. Apparently a problem in multiple chassis, not sure about the E70. Here is a thread mentioning it for the E90: https://www.e90post.com/forums/showthread.php?t=1288626. Not familiar with your other 3 IHKA70 codes. I'd start with the AUC sensor and then go from there. Good luck.
__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles) 2006 X5 4.8is Build 11/05 Maintenance/Build Log Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles) 2010 X5 35d Build 02/10 Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles) |
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#5
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Awesome thanks for the update and PM downloaded and will wipe the laptop and try again.
Ill update once the AUC sensor gets her on the 10th. At least that will be an easy swap. ![]() I saw that thread in my searching, The A/C Compressor is engaging when the A/C is turned on just not getting any Cold Air through the vents. Just get a sound that I can only describe is the sound of a propane tank getting filled up So I think that the vent flags are not opening up like they should and only a sliver is opening and creating the sound. Thus my focus on the Dynamic Pressure flag. I am going to pull the vent cover and see if the I can see the flaps moving. Ill keep updating as hope progress is made Last edited by HellRazor35; 12-07-2021 at 03:07 PM. |
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#6
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Update after replacing the AUC sensor and clear code for the day
Initially had this showing up on a BimmerGeeks ProTools Scan Vin: 4USFE435X7LY79830 Chassis: E70 Model: X5 3.0si Engine: N52 Body Style: off-road vehicle ++++++++++++++++++++++++++++++++++++++++++++ FRM [FRM_70] | 9CC5: Mirror heating, driver's side, faulty JBBF [JBBF70] | A6CF: AUC sensor <<<<---- Ordered new one JBBF [JBBF70] | 9C69: Rear-cabin stratification adjuster KLIMA [IHKA70] | 2007 x5 9C4A: Dynamic-pressure-flap motor KLIMA [IHKA70] | E729: No message (automatic air recirculation control sensor, 0x2D0), receiver integrated automatic heating / air conditioning system, transmitter JBE <<<---- Related to AUC Sensor? KLIMA [IHKA70] | E728: No message (rear stratification, 0x2D3), receiver integrated automatic heating / air conditioning system, transmitter JBE <<<---- Related to AUC Sensor? Replaced the AUC sensor, cleared codes and so far so good. Only codes left that I need to fix FRM [FRM_70] | 9CC5: Mirror heating, driver's side, faulty <<<<---- This morror was replaced this summer by a body shop, need to confirm everything is connected and fuse is good KLIMA [IHKA70] | 2007 x5 9C4A: Dynamic-pressure-flap motor Figured out that you can use ProTool to test all the Flaps oprmomg and closing. All responde except The Dynamic Pressure Flag when testing Is this the correct part ?? If so should be able to access it under the passenger side footwell? https://www.fcpeuro.com/products/bmw...eo-64119321034 |
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#7
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Did the body shop install the correct type mirror?
__________________
8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim 2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim |
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#8
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The mirror was bough at a BMW salvage yard
# 51167179633 2007-2013 BMW X5 (E70) LEFT DRIVER P-FOLD AUTO DIM HEATED DOOR MIRROR So poss. that the heating element is bad. Everything else works....I am more concerned about the Dynamic Pressure Flap because right now I have not Cold air that blows. I can feel cold air its like its being blocked. As per the testing of all the FLAPs the only one that does not respond to the test is the dynamic pressure flap Just looking for confirmation that I am going to be ordering the correct part to replace.
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#9
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Anyone?
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#10
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I ordered that very same part for a problem that ended up being an issue with the IHKA controller. So it may or may not fix your issue.
Mine was reporting the stratification flap + a Lin Bus error, but as I understand it, the Lin Bus issue will cause all the other codes to show up. I followed all the steps outlined elsewhere, included the dynamic stepper motor steps (went ahead and tried a new part just in case). I can confirm that's the part that will fit under the glove box, below/behind the blower motor. It's really easy to access and remove/install.
__________________
2007 X5 4.8i - 12/06 Build - Silver/Black - 3rd Row |
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