I've notice the fogs on my CTT are starting to get a bit hazy inside. I know for certain its the inside, you can obviously see it as its offset inward due to the thinkness of the fog glass. One is a little worse than the other.
You can kinda see a waviness to the hazy, that is its not consistent. Its not moisture either, as there is no droplet formation or pattern to the haze, and it doesnt change with weather or the amount of use/heat with the fogs on.

My question is, can I easily take these out (assuming I need to remove the fender liners to get to them), and has anyone removed the lens from fog light housing to clean? My other thought is, if I cant remove the lens, I can attempt to wash out and dry the inside of the glass through the bulb hole from the backside.

I guess I can just replace them too, but there really isnt anything wrong with them other than this (the exterior is in great shape, and Im assuming the housing is fine as well).

 

Picture?

 

Look at the bottom left of each fog light, a flowing haze

 

If you remove the lights, you can swish alcohol 91% alcohol around inside them, then let them dry with the lens facing up. You dry them this way so the alcohol doesn't run back to the lens and create a new defect. I did this on a 957 headlight where they get that haze in them right in front of the bulb and it cam out spotless. Someone said there's a better alcohol to use, like maybe Denatured alcohol that doesn't have the risk of crazing the plastic which they said could occur with regular rubbing alcohol, but I didn't have a problem.


Headlight went from this



To this

Should work just as well on the foglights

 

Petza914, that's perfect, and what i wad thinking of doing. Since the fogs are glass (the lense) i won't have to worry about a stronger alcohol.
im gonna do this this summer, i will post back.

 

Those are exactly what my headlights look like- I am scared to try the alcohol trick as I don't really want to fork over several thousand in case chemistry is not on my side.

 

Find the thread in the 997 forum where guys were discussing cleaning the insides of their headlights. I assume the construction and materials are likely the same. In that thread someone with a Chemistry degree discusses which type of alcohol is safe to use on those types of plastics without the risk of crazing.

 

Got it. Denatured for sure. Isopropyl would likely have the result that I had on an old Fox body of mine in that the lens cracked immediately lol.

might wait and see Got other projects going on non Cayenne related unfortunately.

 

Can someone steer me to the correct alcohol to use? I can't find 91% and denatured. I have 70/20 isopropal alcohol at home,,but that's Not what has been suggested. I keep seeing denatured ethyl alcohol, but that's fuel.

I did find this and it looks like a good option