Front Windscreen Misting

This topic has 18 replies, 7 voices, and was last updated 7 years, 1 month ago by adw.

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August 22, 2017 at 11:06 PM #64986

adw
Participant

UK - England

Posts: 410

Hi all

I’ve noticed, and its random, my front windscreen is misting. Most noticeable in the dark.

It starts off showing the shape of the windscreen blowers on the glass, then works its way up the whole front screen. When I put the ac on, hot or cold, it only clears the bottom half of the screen whilst the top half is still misty.

Just wondering if anyone has experienced anything similar. There doesn’t seem to be any signs of coolant loss.

It could be a matrix issue, but the car is brand new.

I’m going to give the glass a thorough clean at the weekend, but just seeing if anyone had had this issue

Mods:

AccessPort / Stratified tune + STuned extended pops & bangs + custom pop and bang intensity / Boomba Racing short throw plate / DMB inlays / Mountune air filter / Mountune RMM / Mountune Recirc / Milltek Non Res Cat Back

August 23, 2017 at 5:47 AM #64991

white-rs2
Participant

UK - England

Posts: 4831

With AC used, it pulls all the moisture out of the air within the car. Once the AC is turned off you then get flooded with moist air and this hits the glass and you get misted glass.

Using the AC it’s either on constant or if it’s only really hot or really cold as a heater, using it on, off, on, off, etc will cause the cabin to mist up, due to the ingress of moist air.

As for the pattern heated moist air rises, so the top of the screen will take much longer than the base to clear.

🙂

RS Edition.

FPM375 Rocks

The rest of the “M” maps suck

August 23, 2017 at 7:06 PM #65052

adw
Participant

UK - England

Posts: 410

Thanks white. It happened about 20 mins ago and its like 22 degrees outside! I’ve just given the front screen a good clean to see if that helps.

I can still see the suction cup marks from the factory fitting machine which was interesting to see!

Checked coolant, all seems OK, so watch this space

Mods:

AccessPort / Stratified tune + STuned extended pops & bangs + custom pop and bang intensity / Boomba Racing short throw plate / DMB inlays / Mountune air filter / Mountune RMM / Mountune Recirc / Milltek Non Res Cat Back

August 25, 2017 at 8:49 PM #65201

CaRSrus
Participant

UK - Scotland

Posts: 241

Noted the same but to a lesser degree than you describe. My AC is left switched on, and noted 2 small misted patches at the bottom of the screen when driving from Leeds to Scotland earlier this week. Was very humid outside, but not sure that would have had a bearing on it. Nothing to worry about, I’m sure. Keep us posted though as your misting sounds to be more extensive.

August 26, 2017 at 3:22 PM #65258

adw
Participant

UK - England

Posts: 410

After a clean it seems to have settled down a bit. Its still there, but just not as bad. Cracking the windows down a little bit each day to dry out any potential dampness.

Just waiting for a colder day to see if it still occurs.

Mods:

AccessPort / Stratified tune + STuned extended pops & bangs + custom pop and bang intensity / Boomba Racing short throw plate / DMB inlays / Mountune air filter / Mountune RMM / Mountune Recirc / Milltek Non Res Cat Back

August 30, 2017 at 12:41 PM #65577

adw
Participant

UK - England

Posts: 410

Unfortunately the window is misting again! However, lightly, but still reduces vision in the dark. Had the A/C on and was still slightly misty.

This cant be normal. Might have to take it to dealer, but really cba for them to take it off me for days on end until they ‘find’ the cause.

Coolant is still ok.
No unusual smells.
Not yet checked the cabin filter.

Mods:

AccessPort / Stratified tune + STuned extended pops & bangs + custom pop and bang intensity / Boomba Racing short throw plate / DMB inlays / Mountune air filter / Mountune RMM / Mountune Recirc / Milltek Non Res Cat Back

September 1, 2017 at 12:35 PM #65720

shadowspectre
Participant

UK - England

Posts: 31

I have had this, and I agree it is worse in the dark, I figured because it is colder outside as my old Mondeo used to do it in Winter. I was driving around and had the heaters on to try and clear it and after about half an hour it was too hot in the car so I turned the temp right down but without A/C and it cleared straight away. It’s a pain to be honest.

September 1, 2017 at 1:05 PM #65723

adw
Participant

UK - England

Posts: 410

The trick ive found… Turn the quick clear feature for the front windscreen. Does clear it a lot better than the A/C. Tried it out today, but it switches itself off after 5 mins, then it fogs up again! grrr!

Going to check the quality of the cabin filter tonight.

Mods:

AccessPort / Stratified tune + STuned extended pops & bangs + custom pop and bang intensity / Boomba Racing short throw plate / DMB inlays / Mountune air filter / Mountune RMM / Mountune Recirc / Milltek Non Res Cat Back

September 2, 2017 at 12:14 AM #65762

shadowspectre
Participant

UK - England

Posts: 31

Yeah I have resorted to the same thing as keep putting the temp up and down was really annoying. Let us know about the cabin filter because it is really annoying. I don’t like sitting at idle with the quick clears on all the time because the idle is even lower than normal and the car judders a bit.

September 2, 2017 at 4:46 PM #65799

adw
Participant

UK - England

Posts: 410

So I took the cabin filter out. And I don’t know if it’s good or bad. The thing is filthy. Now I don’t know much about the filter on these cars, but the pics are just after 2,000 miles of use.

Is this normal?

Mods:

AccessPort / Stratified tune + STuned extended pops & bangs + custom pop and bang intensity / Boomba Racing short throw plate / DMB inlays / Mountune air filter / Mountune RMM / Mountune Recirc / Milltek Non Res Cat Back

September 19, 2017 at 10:11 PM #66911

shadowspectre
Participant

UK - England

Posts: 31

from a quick google search it doesn’t seem that bad but unfortunately that is my only experience with a cabin filter.

October 1, 2017 at 2:01 PM #67801

adw
Participant

UK - England

Posts: 410

I’m still having this problem. I have even put special hydrophobic coating on the windscreen and it’s still bad, especially in the dark. Anyone else had any experience with this issue?

Mods:

AccessPort / Stratified tune + STuned extended pops & bangs + custom pop and bang intensity / Boomba Racing short throw plate / DMB inlays / Mountune air filter / Mountune RMM / Mountune Recirc / Milltek Non Res Cat Back

October 1, 2017 at 2:10 PM #67803

howsey
Blocked

UK - Wales

Posts: 1070

It’s Autumn, your screen is going to mist. It’s colder at night: colder means more mist. Google ‘Physics’ or try holding your breath.

October 1, 2017 at 2:28 PM #67804

71-bda
Participant

UK - England

Posts: 9180

A classic Howseyism there !!

No nothing.

No Mods. No rockers. Just a chunky knob, thats now been replaced by an RS knob innit.

No tackiness.

Std as Ford intended, but with a space saver wheel and jack and nuts and wheel brace. oh.. and flaps, a man has got to have flaps.

Innit?

October 1, 2017 at 2:32 PM #67806

howsey
Blocked

UK - Wales

Posts: 1070

Jesus, Mike. Did they do an RS for eight-year-olds?
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