Steamed-up Irrate Is200 Driver

[thegooseman]

Sitting in Lexus Southampton today whilst my motor was recieving its "intermediate health check" :P when a bloke came in and complained that his windscreen had steamed up.

He was very persistant and said that he had his ventilation on the correct setting. I reckon, and so did the service manager, that he had it on recirculating air with the air-con off. When asked if this was the case he immediately went all defensive and the following burbled from his mouth: "It was on fresh air setting, my Ford and my BMW don't do it when they're on that setting" I had a little chuckle to myself as he got more and more irrate.

Eventually the service manager agreed to have a mechanic look at it, although you could see in his mind he was thinking "I wish you'd read the bloody owners guide"

In my experience, and drawing upon my extensive engineering knowledge , it is quite normal for the screen to steam up if recirculating air is selected and the air-con is switched off. Warm moist air drawn from the inside of the car and blown up the inside of the screen + cold air on the outside = foggy windscreen. Hit the Air-con button and the air is dried, no problem.

"If you're Ford and BMW don't do it then you drive them and let someone who appreciates quality, and who can read the owners guide, drive the baby Lex" (quality if you don't mind having CRAP PAINT).

By the way, if you are reading this and thinking "that was me", no hard feelings, I just found it quite funny.

[Matthew_McNally]

he took he car back to the dealer just because his windscreen steamed up?

or was there another reason for going?

[thegooseman]

He was just upset that his screen had steamed up whilst he was driving. I mean if you spend your money on an executive marque like Lexus you don't expect to suffer from steamy windows do you?

[Matthew_McNally]

especially if it doesn't happen in your Ford or your Beemer!

seriously superb cars - manage to defy the laws of nature!

[Steve ( West Mids )]

Well I got this now in my IS200 :(

Last two days been doing 30 mile journeys and front window steams up within about 2 minutes unless direction set to screen, recirc. set to fresh air and air-con on. Surely you don't have to run like this all the time even on a journey. Have checked carpets and boots for damp but all dry as a bone.

Now when I had my Ford ..............................

And ideas please people, cause apart from this it's such a luverly drive on 50 mph roads and no overtaking so getting a chance to enjoy it at last.

[ricky_is200]

When this occurs is the air con on or off? Air con can help clear the screen quickly but the downside is if the car has been left for a short while the car can steam up from the condensed air.

[BESTY]

i think its to do with the lack of draughts in the car,meaning when the doors are shut its like the car is airtight,thats a good thing i think,open the sunroof helps if your a heavy breather :P

[alpine]

If you are in a sealed car, then each time you breathe out, you're pushing a lungful of heavily humidified air at somewhere near 98.4 degrees F into the car. That's why demisting only works properly when the air used for the process is coming in from outside. Put 4 people in and the effect is multiplied.

[ColinBarber]

And ideas please people, cause apart from this it's such a luverly drive on 50 mph roads and no overtaking so getting a chance to enjoy it at last.

Try cleaning the inside of the screen with a glass cleaner. All the dirt that is blown onto the windscreen tends to make it mist up more.

[ekky]

I found windscreen misted up quick when I first got the car, but a good clean and some Rain X anti fog/mist problem went away apart from the bit in the corner I missed !!!

Now trying to clean the inside of the back window not easy to get at

[Fargo]

the problem i have with the screen demist is that you get no warm air on your feet cause its all going up top. and if you deviate then you get steamy windows,

But now, i initialy use the a/c to demist as usual, then switch the air flow to feet and screen, set the temp at 22 and draw air from the outside world with a/c, this works pretty well.

[Brian Berry]

Are we becoming a nation of moaners? I would have thought that the owner of the Lexus would have had enough intelligence to have worked out the problem himself without having to go to a main dealer.

[Steve ( West Mids )]

I've tried every combination but it still mists up :( Run it generally at 21 degrees and change the blower speed from auto when it mists again.

I have got some mist preventer stuff somewhere so as long as it drys up a bit will try that, but I do remember it makes it a bit sneary on the inside :(

[Wosket]

i have mine permanently set to windscreen/feet on auto at 22 degrees and only use the air con in the summer when its hot, ive never suffered from a misty window