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SUVs Mazda CX-9 New Member Thread Mazda CX-9
41 messages, Last post on Oct 26, 2009 at 6:52 PM
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Several times after shutting car off, 07 Sport, the HVAC fan blows full speed. I have to turn car on & off again to get it to shut off. Have you seen this problem or have any suggestions. Thanks.
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Replying to: stonpony (Aug 24, 2009 9:46 am) However if you're referring to a radiator/condenser fan under the hood, that may run to cool the motor when you turn the car off.
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Just got cx9 today... the windshield haze does not seem to go. Used to my toyota...just putting full a/c on windshield removes the haze. But not working in cx9...any suggestions ? Thanks!
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Replying to: carhunter9 (Aug 25, 2009 7:37 pm) If it's not the whole windshield, and you're experiencing spots of fog at the very base of the windshield while driving in the evening that can be removed w/the wipers, there's not too much you can do about that. Can you be more specific about this haze on your windshield?
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Replying to: MazdaTechie (Aug 25, 2009 9:50 pm) It's spots of fog at the very base ..which was not going away . Yes...I did use wipers..but I thought blowing full a/c on windshield should make it go away? (it happens in my toyota). But did not. May be i've to get used to some of the things in new car 
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Replying to: carhunter9 (Aug 26, 2009 6:30 am) That can happen in any vehicle with a working a/c, as long as you have the temperature blend set to cold. Here's what's going on: You know why condensation builds up on the outside of a cold Dr Pepper/Coke/soda of your choice when it's in a warm environment? If so, you might know where I'm going with this. If not, here's why. Moisture is present in the air around us--water vapor, humidity, whatever you wish to call it. It stays as vapor in the air because the air is hot enough to keep it that way. Enter the cold soda. The temperature of the outside of the can is much much colder than the air around. As the air passes around the can, the water vapor in the air comes into contact with the can--the temperature of that water vapor is HEAVILY reduced, forcing it to turn back into a liquid--and just as with anything else, that small amount of water clings to the can. Keep that principle in mind, and apply it to the very base of your windshield. Even when your a/c is set to blow out of the front vents at you, nothing is perfect, and most cars still let out a tiiiiny flow of air from the defrost vent at the back of the dash. As such, your a/c is essentially refrigerating the very base of your windshield. Eventually, that part of the glass can get very cold, just like the icy cold Dr Pepper can. Now while inside the car, the a/c is removing moisture from the air, it's obviously not doing that to the air outside the car. So as you're going down the road, water vapor in the outside air hits the base of your windshield. When the base of your windshield gets really cold, the water vapor hitting it converts back to a liquid, leaving condensation on the outside of the glass in the coldest areas. Long explanation, but basically, the only way to get rid of it is to use your wipers or turn on the heat. It's just one of those things that some find annoying and others don't, but you can't really do anything about because it's just physics at work. I can assure you though, it's nothing wrong with the vehicle. Hope that helps!
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Replying to: MazdaTechie (Aug 26, 2009 8:22 pm) 
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Replying to: wdhyte (Aug 27, 2009 7:25 am)
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Replying to: MazdaTechie (Aug 27, 2009 10:19 pm)
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