I never found an answer to a permanent "off" feature upon start up. So, what I just got in the habit of doing is as soon as I turn my key to position two I turn off the vent/fan system and then turn the car on.

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"Hey, Now that's what I'm talkin' about, Jack!"

Current:
2002 X5 3.0i E53 - Max

Previous:
2003 XB9s - Rebeka(missed)
1993 525i E34 - Elizabeth(sold at 83K miles)