Noticed it today while washing my CF. A search here found a wealth of info on this subject and found the TSB info on it and will purchase the kit shortly. All condensation went away in less than an hour without using the headlights.

My question is, I also noticed a very small amount of condensation in the fog lamps. Is there anything one can do about that? Did not see much info regarding this.

 

If you get the kit, keep the old caps and you will be able to modify them if you install HID's.
If you have already got HID's keep them as spares in case you go back to OEM specs for some reason, you never know.
Some of the kit (one cap and plugs) and an OEM cap and vents.

I never had condensation problems at all and I attribute it to DTRL's, major problems I think are caused by a leaking headlamp unit.

 

I saw where you had mentioned this to someone a couple of years ago or so. Are you saying there is a leak/crack between where the clear front mates to the housing? If so, I am assuming that the most logical fix would be a thin coat of clear RTV all the way around the housing.

I guess, at any rate, I should try the TSB fix first and see what happens. Your DTRL theory sounds plausible. I always use my headlamps while driving. Of course, they are not on while washing.

 

Some people pooh poohed this idea when I raised it at first but with the amount of water in the units some people had they looked like a suitable habitat for frogs. I did not think it was from humidity unless they lived in the Amazon rain forest, so it had to be leaks. Later someone said they had found the leak and it was the seam.

 

Interesting. Thank you, sir.

 

I washed mine on Saturday and also immediately noticed some very light foggy condensation. However, it dissapeared while I was chamoising the car. Not a permanent issue for me.

 

Spraying cold water on the lens could get the moisture inside to condense due to a change in the temperature.
Even a drop in ambient temperature can cause that, air can only hold so much water at a given temperature.
Do you have the kit fitted?

 

That pretty much sums up my situation as well. It was light fogging at most, no water droplets. Also went away while drying the car. Thanx.

 

Good point. It was over 80F today and my spring water is still very cold. I would say right now no warmer than 45F at most.

 

Yes I think this is the cause. Also happened one day when the car was very cold and I drove it into a heated garage. went away very quicky then too. Don't think I have the kit???

 

Hi there onehundred80,
this may have been covered?your pic that you put up,I have the items on the right, with the little vents and closed light back cover. what is the kit? one of my little vent 'tubes' broke(they get brittle),now that light is fogging up? Many thanks .

 

The kit consists of two large caps and two small caps like those sitting on the plastic bag in post #2. The kit part number is on the bag.

 

Thank you Sir. Those little caps ,I see actually block the vents? The big one have some kind of air vent system? and they work? Will the condensation eventually dry? Thank you again one hundred.

 

If you have a little condensation inside the lamp, take off the plugs and turn on you head lights until they dry out.
Use a hair dryer if you have a lot of moisture.
I have never had a moisture problem except a small misting due to changes in temperature. I put it down to the DTRL's we have in Canada.
That membrane on the new large caps must let the air pressure stabilize and be somewhat resistant to moisture passing through it.

 

Thank you one hundred, you were bang on! It has improved and is improving. I'LL get a new vent pipe.Ive put a temporary tube on till it comes . Many thanks.