Condensation on windscreen

Faults and Technical chat for the Mazda CX-3
SOMERS
Posts: 164
Joined: Thu Sep 06, 2018 11:20 pm

Re: Condensation on windscreen

Post by SOMERS » Sun Nov 18, 2018 7:26 pm

DaveG wrote:
Sat Nov 17, 2018 5:24 pm
Does anyone else have a problem with condensation on the inside of the windscreen when parked overnight now the weather is colder.
My CX3 seems a lot worse than previouse cars I have owned. I have checked for obviouse leaks in the car, and the aircon is permantly on.
DaveG
I do apolagise for not completing my post to you regarding rear window and driver side miror defogging.

This relates to the 15 minutes automatic cut off back window and driver side miror defogger system ,Ok !

If the ambient tempreture is cold the device will not shut off automatically in 15 minutes ,you have to remember to do that task personaly ,also the engine must be running for that feature to function. I am also thinking that the center dial switch is iluminated for your convienience.

Dave G One other point sir, I like to test all functions of a car before needed.

There is a hot potato or an over ripe banana in one of my recent posts.

See NOTE page 4 -69

Somers 2018: CX3 SoulRed : Auto


Gordongilchrist
Posts: 77
Joined: Fri Jan 20, 2017 11:20 am
Location: N Ireland

Re: Condensation on windscreen

Post by Gordongilchrist » Mon Nov 19, 2018 1:43 pm

I agree completely about how humid air can result in condensation on the colder surfaces when dew point is reached. Cure is improve ventilation and or raise temperatures of ambient air or surfaces. The only real option is to ventilate humid air before stopping. Turning AC off 10 mins before is recommended. I would also advocate opening windows a bit as well.

I find the cx3 mists up very easily even when driving so believe the cabin is very air tight. Ie the humid air can not escape from cabin wery well. which explain part of your problem. Problem is in winter the external air even is close to 100% relative humidity and just ready to condense as soon as temperatures drop
2017 Mazda CX-3 sport nav 2WD Automatic 120 petrol in white :)


DaveG
Posts: 211
Joined: Sat Jul 15, 2017 3:52 pm
Location: Bournemouth

Re: Condensation on windscreen

Post by DaveG » Mon Nov 19, 2018 6:02 pm

Gordongilchrist wrote:
Mon Nov 19, 2018 1:43 pm
I agree completely about how humid air can result in condensation on the colder surfaces when dew point is reached. Cure is improve ventilation and or raise temperatures of ambient air or surfaces. The only real option is to ventilate humid air before stopping. Turning AC off 10 mins before is recommended. I would also advocate opening windows a bit as well.

I find the cx3 mists up very easily even when driving so believe the cabin is very air tight. Ie the humid air can not escape from cabin wery well. which explain part of your problem. Problem is in winter the external air even is close to 100% relative humidity and just ready to condense as soon as temperatures drop
Thank you for your responce will try as you suggested, plus a little fix of my own although a little tricky, stopping the wife from breathing for ten minuets before we stop :lol:
CX3 Sport Nav - Petrol - manual - 2wd - snowflake white. 2017


Strangways
Posts: 397
Joined: Mon Feb 06, 2017 10:35 pm
Location: Edenbridge Kent
Contact:

Re: Condensation on windscreen

Post by Strangways » Mon Nov 19, 2018 6:54 pm

DaveG wrote:
Mon Nov 19, 2018 6:02 pm
Gordongilchrist wrote:
Mon Nov 19, 2018 1:43 pm
I agree completely about how humid air can result in condensation on the colder surfaces when dew point is reached. Cure is improve ventilation and or raise temperatures of ambient air or surfaces. The only real option is to ventilate humid air before stopping. Turning AC off 10 mins before is recommended. I would also advocate opening windows a bit as well.

I find the cx3 mists up very easily even when driving so believe the cabin is very air tight. Ie the humid air can not escape from cabin wery well. which explain part of your problem. Problem is in winter the external air even is close to 100% relative humidity and just ready to condense as soon as temperatures drop
Thank you for your responce will try as you suggested, plus a little fix of my own although a little tricky, stopping the wife from breathing for ten minuets before we stop :lol:
Let me know how you get on with that one, if you manage to get a phone in jail. :lol:
CX-3 2.0 Sport Nav+ Automatic in ETERNAL BLUE
MX-5 2.0 Sport Nav Manual in SOUL RED


Beezageoff
Posts: 4
Joined: Wed Oct 31, 2018 9:51 pm
Location: Norfolk

Re: Condensation on windscreen

Post by Beezageoff » Mon Nov 19, 2018 9:37 pm

Just got my new car and the first thing I noticed was how quickly condensation appears on the inside of the windscreen at night. The weather hasn't been particularly cold either. Never had that problem on my old Mazda 6! It clears fairly quickly once the blower is on though.


SOMERS
Posts: 164
Joined: Thu Sep 06, 2018 11:20 pm

Re: Condensation on windscreen

Post by SOMERS » Tue Nov 20, 2018 12:49 pm

Condensation does not only accumulate on window glass it accumulates on all internal metal panels of a car where you can not see.
During the early days of wind up windows and cloth seats we had no airconditioning however we did have heating which we used to our advantage to dry out our cars.
There was a section of body work located between the lower leading edge of the front doors and the rear of the front wheel arch which on the Mazda CX 3 is more pronounced designed space to accomadate the Mazda exhaust manifold than most cars of the same size . As in the past and even today that particular area never dries out properly and is prone to rusting,mud flaps did help to direct some of water away.

To be continued

2018 Cx3 Soul red Auto


SOMERS
Posts: 164
Joined: Thu Sep 06, 2018 11:20 pm

Re: Condensation on windscreen

Post by SOMERS » Tue Nov 20, 2018 7:45 pm

FRESH AIR
Before starting off it is always a good idea to fully open, if practical the front side windows,failing that partially open will do ,
(1) This is done to remove stagnent air and provide fresh air in the cabin.

(2 ) During the summer season if the vehicle is kept out side in a non shady area especially if you have a dark coloured vehicle it is good to vent the cabin as the roof gets hot on both sides.

( Time to considder a car cover ) I will do a post on car covers shortly.

(3) this will give the air conditioning system the time required to catch up. after which you may close the windows and run the airconditioner.

Hint : heavy rain get of the highway.

2018 CX3 Soul red Auto


Greenman
Posts: 319
Joined: Sun Mar 27, 2016 1:37 pm
Location: Aylesbury

Re: Condensation on windscreen

Post by Greenman » Thu Nov 22, 2018 1:06 pm

Close all air vents when you park up at night to minimise cold air into the cabin..
Sport Nav 2.0 petrol with Stone Leather


Gadgetman
Posts: 60
Joined: Sat Feb 11, 2017 12:54 pm

Re: Condensation on windscreen

Post by Gadgetman » Thu Nov 22, 2018 1:20 pm

I have a 2017 CX3 and I have to say the winter issues are, fo me, its biggest downfall.

I leave the house before 6 each morning and don't get back to the car until about 7 in the evening. I find it mists up terribly inside when parked, takes an age to clear the front windscreen (sometimes I just end up using a squeegie inside) and the rear screen heater also takes way too long to clear the glass. Combine that with the fact that the side window seals don't clear the glass at all when you drop them makes the whole thing a pain when the weather is poor, much worse than two other manufacturer's cars in the household.

I've checked every inch for leaks and found nothing, aircon is on all the time and have tried every conceivable setting. It's poor as far as I'm concerned.


Handy Andy
Posts: 247
Joined: Tue Oct 24, 2017 9:46 pm
Location: Crowborough, East Sussex

Re: Condensation on windscreen

Post by Handy Andy » Thu Nov 22, 2018 3:26 pm

The problem seems to be that the CX-3 is a really efficiently sealed cabin. The only thing that I have found that helps is when parking up open all the doors and tailgate to let all the warm air escape. The inside is then as cold as the outside so the outside air does not contribute to misting the inside warm air as its all gone. Turn off the air-con to close the vents. I have found it just about solves the issue providing the temperature doesn't rise too much in the day which of course warms up the inside again.
November 2017 - Petrol Sport Nav Auto with Safety Pack and Stone Leather


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