Don't have my X any more, but there are controls in I-drive that let you adjust airflow source and temp and IIRC speed of fan (I think there are three modes for the fan speed in Auto - one of which is "quiet mode" and slows fans down). Can't recall but it may also just be pushing auto mode button a few times....can't remember exactly but there is a control....when all else fails - take a look at the manual, it should be in there.

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