Good afternoon everyone, within the past couple weeks my passenger side low and high beam lenses have a ton of condensation on the inside...I have never had this issue...
Took it to my mechanic he blew it out...and it was fine...till I shut the car off over night...Morning...BAM...full again.
He mentioned to maybe drill two small holes on the bottom to solve this issue? Anyone ever do this...also...any other help would be great to solve this issue!
I do have the hose hooked up...everything seems perfectly sealed.
tx

 

Best way to fix is to "bake unit" then reseal with new adhesive. I believe that fellow member "aholbro" has done a fantastic DIY with pics on R&R.


I don't believe that 2 holes drilled into the bottom will work. After time the condensation is going to pit/corrode the chrome inside the unit.

 

I can't comment on these particular lights for the S type, but can comment on the process you mention.

I had this very problem on the rear light clusters on my Audi A6, actually had 7 sets replaced under warranty, each and every one went the same way.

I tried sealing them with silicone sealant and other methods, nothing worked.

At best they were cloudy / misty and full of moisture, at worst there were droplets beading on the inside and gathering into pools of water.

After reading about a fix on the forum I used for VW, I actually took my lights off and used tissues to soak up most of the moisture, then a hairdryer for around 20 mins to fully dry them.

I then drilled around a dozen 3mm holes approx on the underside for venting purposes and re installed.

From that day onwards I've never had an issue with them, in fact many dozens of owners of the same vehicle also used this process as a last ditch fix.

Worst case scenario after a thorough soaking when washing perhaps the lenses became misty for a few minutes but soon cleared again due to the venting process....all good