sowen

I have an Audi A4 Salon (Sedan year 2002) and the front windscreen is heavily beaded with moisture on the interior when I get ready to drive the car first thing in the morning. This usually happens on cold mornings. All of the windows are fully closed. Has anyone seen this before or have any ideas what is wrong? Is there a leak in the front windscreen seals or is this a common problem on Audi A4's? Any help would really be appreciated.

BJcurby

I get some pretty bad fog buy nothin like that

RKA

Pull out all your floormats, and check the floor for moisture. My guess is that there is a substantial water leak, and your carpeting is soaked. Usually, water leaks into the car from a wire going through the firewall. In most cases, that can be traced to an aftermarket stereo (power wire) or alarm, where the wires running into the cabin haven't been sealed properly. Sometimes the factory wires behind the ECU box will carry water into the cabin if the grommets they run through have been knocked loose.

First confirm IF there is a leak in the car...

SmokeyA4turbod@ebay

Mine does it . on cold mornings the sun roof does it too

Allroady DungBeetle

You've got water in the foot-well or something. That's NOT normal.

RKA

There should not be any condensation *inside* the glass if you've closed all the doors and windows.

sowen

I've looked at the footwell and floor mats and there is not water or visable leak. This morning it was very frosty, therefore, the inside of the car where the condensantaion is forming is all iced up. I actully had to scrape ice of the inside window.

Mike O.

...if that is normal then you have a leak in the sunroof or something. If the coolant is low, you have a leak in the heat exchanger (the radiator for the heat).

Mike O.

RKA

You've got some kind of fluid leak...where it's getting in, is the question, but it's major, based on what you're saying. The longer this continues, the better the chances that electrical items in your car will begin corroding.

Mike could be right as well...do you smell coolant in the car?

AR7AN

I agree with this, I'm 99% sure its fluid leak, I have the same problem with mine if you take off the black heater motor casi g to the right of your battery you should see the filter is that falling to pieces soaking wet? That's how I found out were the leak was, also previous owner ran an audio lead from the battery terminal straight through the gromit in the firewall and the cables behind the door card ( drivers side) were soaked, carpets were soaked and the drivers door was not flush so I had the task of working out which was co tributing to the damp if not all

I used a dehumidifier And left the car in the sun good luck