before the post i did the following -tested the fuses, none blown all have continuity, all have clean pins -did the flaps adaptation, just like in the video sent by @ords -ac installation was filled like 3-4 months ago After the post (2 days ago): -tested the car with VCDS (in the middle of the day, when ventilation wasn t working): 393476 - Air Blower B10BE 13 [009] - Open Circuit [New feature! Extended UDS fault detail is only supported by current gen. interfaces] Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 2 Fault Frequency: 4 Reset counter: 146 Mileage: 262266 km Date: 2026.07.02 Time: 17:35:27 Voltage terminal 30: 13.5 V Outside temperature: 36.0 °C Inside temperature: 38.6 °C Blower voltage: specified value: 10.1 V Blower voltage: actual value: 25.4 V 393473 - Air Blower B10BE 96 [009] - Component Internal Failure [New feature! Extended UDS fault detail is only supported by current gen. interfaces] Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 2 Fault Frequency: 1 Reset counter: 147 Mileage: 262266 km Date: 2026.07.02 Time: 17:35:27 Voltage terminal 30: 13.5 V Outside temperature: 36.0 °C Inside temperature: 38.6 °C Blower voltage: specified value: 10.1 V Blower voltage: actual value: 25.4 V After this i took out the blower out of the car, and put it on a car battery at 12V, it spinned, and fast. I measured with a multimeter from car to blower: 12V on the plug i measured then the resistor/command module (5Q0 907 521 E) that is mounted on the blower. I measured the resistance of the 4 pin plug that is on the command resistor, and from the compinations of measuring from 1-2, 1-3, 1-4, 2-3, 2-4, 3-4, i ve got resistances of 30-50x megaohms, one in the order of 10x kiloohms and OL. now i think that this command resistor has some internal damage and i will try to replace it, hope it will work. Again if anyone has any ideea of that, or if what i did seems ok or not, please leave an answear. Again thanks in advance, have a nice day!