That happens when temperature is around freezing point and lot of moisture in the air. The air temperature drops below 0C even your display shows 1 on the road surface.

 

Was it the air being warm and moist in the car from the hot food?

 

Was it the air being warm and moist in the car from the hot food?

Doubt it, that was in the boot. Happened when I dropped down a hill so likely a temperature change outside. I'll probably never see it happen ever again!

 

Was it the air being warm and moist in the car from the hot food?

Doubt it, that was in the boot. Happened when I dropped down a hill so likely a temperature change outside. I'll probably never see it happen ever again!

More importantly, does the curry hook in the boot work?

 

Was it the air being warm and moist in the car from the hot food?

Doubt it, that was in the boot. Happened when I dropped down a hill so likely a temperature change outside. I'll probably never see it happen ever again!

More importantly, does the curry hook in the boot work?

Yep, and it's been tested many times, a little more drop would be perfect, but a bit of twisting of the bag and all is good.

 

No harm to check that your A/C is switched on.

Sudden changes of, or low, temperature causing misting suggests that it may not be.

 

aircon on, I never turn it off.

 

I have a similar product to this in my car, works great;

https://www.halfords.com/motoring/car-accessories/interior-car-accessories/air-dry-classic---car-dehumidifier-170096.html

Mine is reusable, put it into the micro every now and then to remove the water.

 

aircon on, I never turn it off.

Aircon itself can cause the misting. I used to have real issues with this on my last car which was a Nissan GTR but not on either of the other 2 GTRs I owned.

Was never sure why it happened but it often seemed too, one thing which can cause it is the heating controls being set to recirculate rather than take in fresh air, moisture levels increase over time in recirculated air.

Won't the heated front screen clear it though?

 

Was so severe the heated screen did zilch. Like totally clear to saturated in 10 seconds. I was home in 1 minute after it happened. Atmospheric freak I put it down to. I never set to recirc either.

 

Well, this happened again but to a less severe extent on Xmas morning, early trip to get my Mum, temp was minus 5, car garaged. Misted over in 10 minutes. Turned heater to max screen thingie and it cleared but took a good 30 minutes and several wind downs of the windows. Then it happened again today, temp 0. I discovered I had the auto airflow set to " soft so have upped this to balanced. I'll be putting an old pair of tights full of cat litter inside it to see if I can dry anything out. Was nowhere near as bad as the first time, and totally driveable, I guess a panting dog in the boot contributed today also. Hope the different setting sorts it out. I'd run the climate for about 20 minutes before getting in today to try to avoid it as well.

 

I think your suggestion of the cat litter absorbent is a good start. I can recall these events in old cars without heaters.

My thoughts are that you have water in / on /under the carpets and floor insulation, residual heat rising from the underfloor traction battery is vaporising water that condenses onto the windscreen when the glass is very cold.

Some owners have posted about windscreen leaks with water collecting under the carpets.

Running with the A/C selected to heat the car will help dehumidify the air, I have read comments that the car will use an electric element heater to warm the car if the A/C Mode is deselected. Feel free to correct this theory if I am mistaken.

Cheers, Steve

Edits

 

I have the same issue-the windscreen won't clear fully and all other windows/glass roof are misty affecting vision and seeing wing mirrors. Other cars drive by with clear windows! I'm driving in a mini fog.

 

I would like to ask you guys smth related:
We went up the mountains to the snow. It was around -2°C outside. The snow covered the front windshield and we put our wet clothes in the back.
I got rid of the snow on the windshield and turned on the car with max aircon to the windshield, as I don´t have the heated windshield option.
Of course the battery was cold, so I guess the car had a hard time. But after 2 or 3mins there was only two small spots at the bottom of the windshield that were free of mist. I had to clean the windshield manually with a towel, as I felt like it would take forever.
Is this normal?
Would I need to precondition the car in that scenario, even though I was not connected to charge the vehicle?

 

I would like to ask you guys smth related:
We went up the mountains to the snow. It was around -2°C outside. The snow covered the front windshield and we put our wet clothes in the back.
I got rid of the snow on the windshield and turned on the car with max aircon to the windshield, as I don´t have the heated windshield option.
Of course the battery was cold, so I guess the car had a hard time. But after 2 or 3mins there was only two small spots at the bottom of the windshield that were free of mist. I had to clean the windshield manually with a towel, as I felt like it would take forever.
Is this normal?
Would I need to precondition the car in that scenario, even though I was not connected to charge the vehicle?

Did you clear the air intake from snow ?

 

I leave the aircon and auto seat activation on all the time. I never have the air circulation on. So always have fresh air come in to the car. I nearly always precondition from home and don't suffer from any misting up.
The outside of the windows may be misty, just low and raise windows solves that. The heated wing mirrors may take a few seconds to clear as does the rear screen.

 

left the windows open in the garage overnight, then preconditioned for 30 mins prior to Mrs endo doing a quick trip to the supermarket today in near freezing temps, She reported no misting. Cat litter has now gone in as well. Shall see if that helps .

 

...re precondition from home does that mean you charge to 100% every time?

 

nope, I just put the climate on via the app. In fact I've programmed a shortcut on the phone so I just tap the back of the phone 3 times and the aircon turns on. Also did the same while mrs endo was shopping as she doesn't have the app. Car was plugged into a free charger there.

 

I've had this problem since I purchased my car over 2 years ago. Seems to occur whenever outside air temp
Is below about 5 degrees. Temperature drops even just a degree and it's almost instantaneous. Was so severe I returned to the dealer who checked the entire car for a leak etc, found nothing. Happened again and in their advice called out Jag assistance (RAC) who did same again.

Can't help but feel it's a design flaw or sensor flaw that allows the humidity to ride in the climate control output. For it to suddenly happen with no other 'variables' seems to point that way.

Either way it takes an absolutely age for it to clear. I've tried all the 'tricks' suggested before to no avail.

All a bit a British Leyland really!

 

I have had no misting at all even with a couple of wet dogs in the car and me wet through walking them. I always have the aircon on to keep the air dry.

 

I have had no misting at all even with a couple of wet dogs in the car and me wet through walking them. I always have the aircon on to keep the air dry.

It's a strange one. It doesn't tend to happened immediately, I find it happens some time into the journey abs it's almost instantaneous but doesn't seem to be related to the obvious. It's like suddenly the car emits humid air.

 

Have you had the aircon checked and the pollen filter?

 

I would second the advice to get air con checked- if you dont trust the dealer, Kwik fit will pressure check and recharge for a fixed fee. Air con doesnt just cool air, it dehumidifies it, hence it clears the screen in winter very quickly, if its working, of course.

 

Put the aircon on in the garage today prior to a quick trip to B+Q. Car actually steamed up while in the garage, was ok while driving, and cleared fully on the return. May need to get the aircon looked at if it continues. I think the pollen filter was changed at the 2 year service.