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04-04-2018, 09:44 AM
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#1 | ||
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Regular Member
Join Date: Jan 2012
Location: Brisbane
Posts: 125
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Hi all,
I've got a Sept 2017 build Mondeo Wagon Trend, and notice, now that the outside temp has cooled a bit (QLD), when it's below 24 degrees (On the car computer temp) outside, and I have the aircon on, the outside of the drivers window, mists up completely... That would be the lower 20% of the screen, from the middle to maybe 20cm from the edges. So, where the blowers blow. The condensation is on the outside of the window... And I find I need to use the wipers every minute, manually, to see. Is this normal?! I was told that, because this is a 'luxury car', the aircon blows on the windscreen, and this is normal. What!? I've owned a few cars, and never had this.
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Cars I had: South Africa: Opel (Holden?) Kadet 140, Opel (Holden?) Kadet 160i Scotland: VW Bora (Jetta?) 1.9TDi, Vauxhall Vectra Wagon, VW Golf 1.9TDi South Africa VW Golf 1.9TDi Australia: VW Golf 1.9TDi, Holden Captiva, Ford Territory 2011 TS RWD Diesel (Sold June '15), Ford Territory 2015 TS RWD Diesel (Sold Dec '17), Ford Mondeo 17.5 Trend Wagon |
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04-04-2018, 10:07 AM
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#2 | ||
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FF.Com.Au Hardcore
Join Date: Jul 2007
Location: Sydney
Posts: 2,530
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Every car I've ever owned has done this - because of flow-through ventilation laws, all cars have an "at rest" default which is to leave the demister, or demister & floor open - even just a little, so that when the A/C system is off, some air still flows through the car.
In many cars, it means the demister doesn't fully close, and if you run the A/C on a cool morning where the humidity is near dew point, it causes external condensation to form. My FG does it all the time, so to previous cars - Commodores, Subarus, and even a Camry I drove the other night in Qld in the rain. |
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04-04-2018, 10:29 AM
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#3 | ||
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FF.Com.Au Hardcore
Join Date: Apr 2012
Posts: 976
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Yep, as CN says, your aircon is working!
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Steve Current rides 2012 Mondeo Titanium wagon (TDCI) Moondust silver 2016 Focus Trend, 1.5ecoboost, 6sp manual. Frozen white Previous 2004 Berlina Wagon (LS1) Vespers Blue 1995 Camry 2.2, white 1971 Ford Fairmont wagon 302w, C4 Polar white 1971 TC Cortina, 2L 4sp, Ermine white |
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27-03-2023, 11:18 AM
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#4 | |||
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Starter Motor
Join Date: Apr 2006
Location: Australia
Posts: 17
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Quote:
Hi I have a FG 2013 G6E which I've had for 11 years it has only just started doing this did you find a solution? Thanks |
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27-03-2023, 11:50 AM
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Starter Motor
Join Date: Apr 2006
Location: Australia
Posts: 17
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Hi have a 2013 G6E have always set the Climate control to AUTO have never had condensation forming on the outside of the windscreen before now all the time did you find a solution Thanks Dennis
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30-03-2023, 08:21 PM
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#6 | ||
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Regular Member
Join Date: Oct 2009
Location: 4074
Posts: 144
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Hey all.
I think maybe it's the time of the year ? My Mondeo is doing the same right now. I have my climate set to 22.5C year round, which I find is perfect for SEQ. The last month or so I have experienced the same when the outside temp is similar to the climate set temp. The climate control is clearly sending the air to the windscreen, almost as a defrost. A simple flick of the wipers removes the outside condensation. I haven't tried, but I'm sure switching from climate to manual vent selection would stop this if it's a problem for you.
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18.75 MD Trend Hatch Diesel |
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31-03-2023, 10:53 PM
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#7 | ||
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FF.Com.Au Hardcore
Join Date: Oct 2005
Location: Auckland, NZ
Posts: 1,266
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It will happen when the outside air has high relative humidity. The windscreen only needs to be a few degrees cooler than the air to condense out the water vapour.
Sent from my SM-S906E using Tapatalk
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MB Mondeo TDCi wagon, sea grey, on MAK Invidia 16" wheels. |
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Windscreen condensation
Linear Mode
