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Code B1446 air mix control servo motor-driver side

Babar shah

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Hi everyone,

new to forum. I own a 2013 lexus IS250. Recently I noticed something is wrong with my aircon all of a sudden. Vents on back seats blow hot air like heater even if temperature is low and front vents doesn’t blow as cold as it was before. I went to a mechanic and he diagnosed code B1446  air mix control servo motor-driver side. Does anyone have any idea how much it cost to fix and whether i should go to Lexus for repair or private mechanic.


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