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Q: AC & heat don't work.Dual temps do not show now &loud blowing sound.What's wrong on 2002 BMW 530i

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
This just happened for the first time today. Even I stop the car it sounds like loud fan is still going inside. I called a mechanic & he said it is the mechatronix. However, I looked that up online & it appears that is related to the transmission not my temp panel. I was thinking/hoping it was just a fuse. Please help!
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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