Hi, let me share you story about my OSRAM LEDriving headlights on my GOLF 7.
I have bought lights 12/2019 and compared to original halogen lights they are massive improvement. Better and much brighter light, better light color, better looks of the car etc.
In the past the light on passanger side got some condensation but it disappeared after few days. After contacting OSRAM support I was told that some condensation or moisture or fog in light is normal because the headlight is not hermetically sealed.
This summer the condensation in the same light on passanger side got visibly worse and there was permanent fog and water in the light:
After few days the daylight led stopped working:
I contacted OSRAM support and they have decided that even though headlights are not under warranty anymore that they will send me new headlight for free.
After few weeks of communication and waiting for them to ship the headlight I got it in the mail 2 days ago 
Anyway if your OSRAM headlights start to have condensation inside I suggest you claim the warranty with OSRAM straight away, or if the headlights are not under warranty anymore try to reseal them
. The lowest point of the headlight is small metallic box where are the wires from leds inside go:


This box contains controller board for the headlight and because it is lowest point of the headlight this is where all the water inside the light will end up eventually destroying the board
:
I have bought lights 12/2019 and compared to original halogen lights they are massive improvement. Better and much brighter light, better light color, better looks of the car etc.
In the past the light on passanger side got some condensation but it disappeared after few days. After contacting OSRAM support I was told that some condensation or moisture or fog in light is normal because the headlight is not hermetically sealed.
This summer the condensation in the same light on passanger side got visibly worse and there was permanent fog and water in the light:

After few days the daylight led stopped working:

I contacted OSRAM support and they have decided that even though headlights are not under warranty anymore that they will send me new headlight for free.
Anyway if your OSRAM headlights start to have condensation inside I suggest you claim the warranty with OSRAM straight away, or if the headlights are not under warranty anymore try to reseal them




This box contains controller board for the headlight and because it is lowest point of the headlight this is where all the water inside the light will end up eventually destroying the board


