[HumanSkunk]

I need to chase my local dealer as my right light is just getting worse, they authorised the repair but it's gone quiet.

Fog is now pretty much over the entire light god knows what it is like driving at my car at night as my guess the moisture is causing the beam pattern to fire all over the the place. No one seems to be flashing me yet...

Luckily I still have 2 more years of warranty so hopefully BMW will figure it all out by then. It is a bit of a joke.

[wb8164]

It certainly isn't a great look for BMW as a Company. If someone sees a nice new/newer BMW in a car park/parking lot and then sees two headlights that look like terrariums, they have to wonder what's going on. I know that if I were in the market for a new car and saw this, it would raise some red flags.

I'm touching wood. I had my headlights replaced last year and they've been solid since........

[AlexTokarev]

Hi guys. I'll tell you how I solved the problem with condensation in the headlights on the bmw g42. I want to apologize for my English right away. I write through Google Translate. I'm from Russia, and as you've probably heard, we don't officially have BMWs anymore. I bought my BMW 230 at an auction of broken cars from the USA. My car had some minor damage on the front, so I had to buy headlights. Both headlights most likely arrived in Russia after a warranty replacement in Europe. That is, I assume that they also had a defect from the factory, then they were exchanged for good headlights. And these headlights were illegally sold to the secondary market of spare parts. But this is just my guess, based on the experience of restoring broken cars in Eastern Europe.
I took my headlights off the car and started checking for leaks. I sealed all the holes with paper tape and started pumping them with air using a compressor. I applied a soap solution (liquid soap + water) to all joints and seams. So I found 3 micro cracks on the glass. They were located in places where the factory sealant was applied in smaller quantities than on the rest of the headlight.
I took a special tool for gluing plastic. It is called "dichloroethane glue" (it may be called something else in your country). And I poured this glue into the cracks. Then I moved the glass around these cracks a bit to let the glue get into the crack. After that, I covered the taped areas with a special sealant for car headlights.
Now my headlights are fine and they don't sweat anymore.

As a result, I can name two main reasons for the ingress of water condensate into the headlight on the G42: 1) a factory defect in the application of sealant (the thickness of the sealant layer is uneven, in some places it is very small) 2) There is no damper between the bumper and the headlight glass. Any impact of the bumper on the curb or pit will cause microcracks on the headlights.

[wb8164]

Alex, That's a pretty nice piece of detective work. Thanks for sharing your findings.