9C4A – stepper motor dynamic pressure

[HellRazor35]

So A/C and heat vents starting having issue. When A/C switched on and fan is running sounds like pressure is being released out of a soda bottle that was shook-up and slowly being release. Turn the fan off and sound goes away
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
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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)