vents come on with ignition start - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

 
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#1 (permalink) Old 08-11-2004, 06:55 PM
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I searched for this but could not find it.. Does anyone know why the vents come on everytime I turn my car on?? is there any way to turn this off?

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#2 (permalink) Old 08-11-2004, 08:28 PM
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what vents? the fan?
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#3 (permalink) Old 08-11-2004, 08:47 PM
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ya the fans.. for the A/C or heater.
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#4 (permalink) Old 08-11-2004, 09:03 PM
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If I am not mistaken, the ECU stores the HVAC settings as they were when the car is shut down. This is to insure that if the heat defrost controls do not properly activate upon startup, you have the most recent settings activated.

I read this in the Bentley Manual...er. I think....gordo
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#5 (permalink) Old 08-12-2004, 05:40 PM
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I always shut them off as soon as i start my car, but the next time that i turn my car back on the heaters or A/C comes back on. The dealership said that all their cars do that and they don't know why?? is this true or he just said it cause he didn't know the answer. Does everybodies car do that here???

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#6 (permalink) Old 08-12-2004, 07:31 PM
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it totally should not if you leave the temp control in maual, and turn off the fan. mine remebers the setting i left before swithihd the car off.
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#7 (permalink) Old 08-17-2004, 11:31 AM
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It looks like others have this problem as well?? anyone know the answer to thisl. Thanks

QUOTE (rmen13 @ May 19 2004, 07:56 PM)
QUOTE (jpz @ May 8 2004, 06:06 PM)
I just bought a 99 323i and was wondering how to not have the heater/ac come on at start up. thanks


yea how do you make it so the ac/heater doesn't turn on when starting the car?




I was looking for an answer to this as well. Is it possible?
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#8 (permalink) Old 08-17-2004, 02:15 PM
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ahh the climate control defaults to on everytime you start car ie ac/or vent or heat even when you shut it down when driving it will turn on when you start car. thats the way it works you have to live with it sorry

"What happens here stays here" Las Vegas
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#9 (permalink) Old 08-17-2004, 03:29 PM
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Really???? thats the stuipidest thing ever.
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