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Cold air only from vents

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Old 11-27-2007, 08:23 AM
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Originally Posted by i005754' post='499553' date='Nov 27 2007, 12:00 PM
I adjusted the climate controls via iDrive so that they offered maximum heating and was greeted by a distinct lack of warm air.
What exactly did you adjust via iDrive? In my experiences, if you leave things set to full auto and simply adjust the temperature dials up or down, you'll have total comfort and you won't have any fogged windows, etc. As soon as you override any of the automatic settings, you prevent the car from doing what it needs to do to maintain things the way it was designed to...
Old 11-27-2007, 08:37 AM
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Originally Posted by Rudy' post='499560' date='Nov 27 2007, 10:23 AM
What exactly did you adjust via iDrive? In my experiences, if you leave things set to full auto and simply adjust the temperature dials up or down, you'll have total comfort and you won't have any fogged windows, etc. As soon as you override any of the automatic settings, you prevent the car from doing what it needs to do to maintain things the way it was designed to...
I adjusted the heating / cooling bars so that there were four red bars. I tried the automatic settings, but when I checked the climate setting svia iDrive it looked like the auto program was setup to use 2 'red bars'. It was the auto program that fogged and frosted the windows...

The car is outside now and will be back to a solid -14C by lunch - perfect for doing some tests! I will try the automatic program again at lunch. How long do you think it should take for the heater to be working at 100% capacity if the car is just idling? I was thinking the 5 minutes was a reasonable length of time? Maybe not?


thanks!

steve
Old 11-27-2007, 11:04 AM
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Originally Posted by i005754' post='499570' date='Nov 27 2007, 10:37 AM
I adjusted the heating / cooling bars so that there were four red bars. I tried the automatic settings, but when I checked the climate setting svia iDrive it looked like the auto program was setup to use 2 'red bars'. It was the auto program that fogged and frosted the windows...

The car is outside now and will be back to a solid -14C by lunch - perfect for doing some tests! I will try the automatic program again at lunch. How long do you think it should take for the heater to be working at 100% capacity if the car is just idling? I was thinking the 5 minutes was a reasonable length of time? Maybe not?


thanks!

steve
Rudy - you are correct. The automatic setting has intelligence built in that appears to consider the ambient temperature etc and direct the airflow accordingly. I am still not satisfied with the volume and temperature of the air moving through the vents. The volume might have something to do with the microfilters(?) but the temperature problem is a bit of a mystery...

thanks!

steve
Old 11-27-2007, 11:23 AM
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The only other thing I forgot to emphasize when I mentioned "full automatic" was that you need to have the air recirculation settting on automatic too. If the recirc is manually set to closed, you'll likely get fogging...
Old 11-29-2007, 12:20 AM
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Originally Posted by i005754' post='499570' date='Nov 27 2007, 05:37 PM
How long do you think it should take for the heater to be working at 100% capacity if the car is just idling?
A lot longer than if you just drove it. An idling engine doesn't generate much heat so it would take a long time to get warm. Not very environmental either .
Old 11-29-2007, 05:43 AM
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Originally Posted by smarty156' post='500497' date='Nov 29 2007, 04:20 AM
A lot longer than if you just drove it. An idling engine doesn't generate much heat so it would take a long time to get warm. Not very environmental either .
Although an idling engine isn't pumping coolant through the radiator and engine block as much as an engine that's driving. I suppose it can vary from car to car but years ago, the quickest way to warm up a car was to let it idle...
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