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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 10-25-2015, 10:10 AM   #1
99Bandit
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Join Date: May 2014
Location: Mississauga
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My Ride: `01 330 convertible
heater controls

I've posted before about the auto function that comes on when I start the car, an annoyance for sure. But the defrost function, I press the button, top right, it comes on full fan. If I try to regulate it, it shuts down.
On our X3, both functions work perfectly, no auto unless I hit the button and the fan on defrost is variable.
What's the fix?
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Old 10-25-2015, 10:21 AM   #2
markusmarkus
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The system is operating as designed. When you push that top button the fan will come on full blast and the air will exit the dash top cents only.
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Old 10-25-2015, 01:16 PM   #3
99Bandit
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That doesn't make sense. Been around cars for five decades and this is the only one where you can't regulate fan speed on defrost. As I said our X3's system works perfectly
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Old 10-25-2015, 01:21 PM   #4
franz
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The first item can be changed, it's a programming option I believe. As for the other one, if you don't like it you can send air upwards and regulate is as desired, just not with the upper right button.
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Old 10-25-2015, 04:00 PM   #5
99Bandit
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Ok Franz I'll try that, the programming thing, in an earlier post a guy tried to explain it but too involved for me. is there a easy way to do it/
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Old 10-25-2015, 04:10 PM   #6
cvx5832
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Quote:
Originally Posted by 99Bandit View Post
Ok Franz I'll try that, the programming thing, in an earlier post a guy tried to explain it but too involved for me. is there a easy way to do it/

No.
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