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      03-27-2011, 11:01 AM   #1
drvai
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Turning off AC before the car=no foul smell

Im sure a lot of people have the A/C smell after turning the A/C on. Lasts for a short period of time, but is really bad. Despite the fact I have used the 1Z A/C cleaning system, and even changing the filter, the smell eventually comes back.

I have noticed that if I turn the AC off a minute or even seconds before turning the car OFF, the smell goes away.

I wonder why this happens. In the past, I was recommended to turn the actual AC off but leave the fan so "it dries up".

any clue?
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      03-27-2011, 11:58 AM   #2
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Well that sucks. I've got this with my C63 and was hoping not to encounter it with the M3.
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      03-29-2011, 07:38 PM   #3
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Quote:
Originally Posted by drvai View Post
In the past, I was recommended to turn the actual AC off but leave the fan so "it dries up".
I've heard the same. Don't recall exactly why though. And I even wonder if it still applies to modern cars.
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      03-29-2011, 08:13 PM   #4
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Mold??
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      03-29-2011, 09:24 PM   #5
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I haven't even used my A/C yet. Live in Canada, picked up my car last October, still using the heated seats!!!
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      03-29-2011, 10:53 PM   #6
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from what I have heard, the AC compressor condenses water into a spot that doesn't drain fast enough / well enough and tends to mold. Turning off the AC a few minutes before you arrive to your destination will air out that spot or evaporate off the water maybe?
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      03-30-2011, 06:00 AM   #7
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Seconds? If anything, this is coincidence. There is no technical reason why this would be true, and I doubt even "minutes" would do anything. If there is water in there, it's not going away in minutes unless there are a lot of minutes.
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      03-30-2011, 10:30 AM   #8
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Turn off the A/C and let the fan run for a bit before turning off the car.
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      03-30-2011, 10:43 AM   #9
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Quote:
Originally Posted by Mike V8 View Post
Turn off the A/C and let the fan run for a bit before turning off the car.
Yep that also helps resolving the enbarrasing water dripping over the exhaust and making noises in the middle of a grocery shop parking lot..
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      03-30-2011, 06:03 PM   #10
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also try turning on the heat for 2 or 3 min. it will help to dry it out.
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      03-30-2011, 11:39 PM   #11
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also try turning on the heat for 2 or 3 min. it will help to dry it out.
That's what I do and it works. I had an S4 that smelled the same.
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      03-31-2011, 12:12 AM   #12
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I rarely have that musty smell and with all my cars what I have done is use the AC in continuous interior recirculation. This will deter the formation of moisture within your air condtioning system.
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