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      06-12-2025, 11:32 AM   #1
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Drives: BMW IX
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BMW iX - AUC sensor replacement

I bought a 2022 BMW iX six months ago. Summer is coming to Sweden, and I noticed that the AC is not working properly in the car.

I purchased a Veepeak OBD2 adapter and used Car Scanner to read the fault codes. I found the following codes related to the air conditioning system:

8011AD: Function – Limited interior cooling available

8011AE: Function – Limited interior heating available

80439A: AUC sensor – Short circuit, interruption, or faulty PWM signal

CD0C70: PT sensor 1 (PTSEN_HD_1) [LIN] – Missing LIN slave

It seems that I should start by checking the AUC sensor.
Does anyone know where the AUC sensor is located in the BMW iX?
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      Today, 08:27 AM   #2
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It appears to be located under the hood in the “engine” compartment area, but requires removing quite a few things to get access to it.
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