During the winter my screen and windows steam up

depending on year and made. one is it can be around the glove box area. slide in and clipped into place. other one is passide engine bay under the windscreen plastic cut out. other is in same area but more to the middle. really depends on what heater/a/c is fitted.

may be a blocked vent in the windscreen vents. could be at the windscreen end or at the controler in the heater. if you dont have a pollen filter fitted rubbish from the road i.e leaf's can get in and block it up.

To replace the cabin filter it is straight forward, open the bonnet, carefully unlatch the plastic cover near the windscreen, with the key in the off position move the windscreen wiper stalk this would cause the wipers to move and park in a vertical position allowing the removal of the plastic cover, Note how it fits under the windscreen, the filter can then be removed and replaced, all in all 10 minutes!

Have you checked your coolant level? souns like you may have a heater core leak.

If your car has an air conditioner turn it on as well as the heater . Air conditioned air is very dry and usually defrosts the windscreen quickly. The heat from the heater will overcome the cold air from the air/con. It is good for the air/con to be run during the winter months as well as summer, it stops the seals drying out and leaking refrigerent.

I had a similar problem on my Focus but water was getting under the nearside passengers carpet (Mine is a right hand drive in the UK). I eventually took it to my servicing dealer who knew straight away that it is something to do with the way the windscreen is fitted. (I had previously had the screen replaced but as there was some time between that and me noticing the wet I had not made the connection). In my case the rain water was running down the windscreen behind the black plastic which is at the bottom and then apparently it was dripping through a filter (pollen filter?) into the car interior. The dealer sealed between the windscreen and the plastic with a black mastic stuff and it fixed it. Some time after when I had to have another windscreen replaced I mentioned this to the windscreen fitter who told me that it was likely that the previous fitter had not correctly re-fitted some sort of "gutter" component which is designed to direct water which gets behind the plastic, safely away to a drain area . That is, it stops it going through the filter into the car interior. Anyway whenever the dealer services the car and replaces the filter, (he has to remove the plastic cover to do that I think) he always seals the plastic cover to the windscreen with the mastic stuff so I've had no problem since. Perhaps in your case its a similar thing and the water is just finding its way over to the drivers side? I hope this is relevant and helps. Good Luck.

A LOT OF POLLEN FILTERS ARE LOCATED IN THE ENGINE COMPARTMENT JUST BELOW THE WINDSCREEN, NOT SURE WHICH SIDE, ALSO SOMETIMES UNDER THE COVER WHERE THE WINDSCREEN WIPERS ARE.

Most pollen filters on this model are fitted in the bulkhead, below a plastic trim panel at the base of your windscreen, below the tax disc. Lift the panel and you'll be able to slide the panel air filter forwards and away. Hope this helps you? Good luck

lift the bonnet and remove the plastic trim below the windscreen (passenger side) this covers the pollen filter check for distortion this will be the problem. replace the pollen filter it will be damp.if the trimis not too distorted refit or buy new. The trim acts as a rain water gutter and has been fitted incorectley, have you recently had a service ?

hi
wife had a 2001 focus estate with same problem
the problem was the seal arround the pollen filter which is situated under the bonnet just under the windscreen on the passenger side
hope this helps
dave