If it's like my 2011 335, even with auto 'on', you have the ability to fine tune how quickly the fan cools to its desired temperature. I usually keep the fan speed in the middle position, while still in 'auto' mode. However, there are times when the fan is blowing too loudly so I'll lower the fan speed. My thought is that the fan will just run longer at the lower speed until the desired temperature is reached. Make sense?
Originally Posted by zznalg
Btw, after reading the manual, it's still a bit unclear. I've got the automatic climate control. The manual speaks of adjusting the intensity of the system by manually adjusting the fan speed while in automatic-mode. But, it goes on to say that the system automatically adjusts air-volume. That sounds inconsistent but, I'm hoping it's just the writing that's unclear. However, as I mentioned, I haven't noticed the system automatically adjusting air-volume/fan-speed while in automatic-mode.
6/17/13 ED - 2013 328i xDrive Mojave Sedan
5/5/11 ED - 2011 335d Space Gray Sedan
8/30/08 ED - 2008 335i Montego Blue Coupe
9/13/05 ED - 2006 325i Sparkling Graphite Sedan
BMW CCA #366798
Last edited by E90 Enthusiast; 05-26-2012 at 08:31 AM.