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This is a common issue. Mercedes has a "fix" for certain models that comprises a bag of silica gel to be placed in the bottom of the head lamp once the driver module (with the external heat sink fins) has been removed.
and also replacing a membrane tape that should allow moisture to get out but not in. Removing the head lamps to apply the kit is cumbersome. Some sources on the internet claims that there is a de-moisturing process that starts
after a certain time. I have not experienced that this procedure, if it exists, work.
Obviously, the non-ventillated head lamp design was not a success. I have the same problem and plan to install silica gel bags myself.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by Uky
This is a common issue. Mercedes has a "fix" for certain models that comprises a bag of silica gel to be placed in the bottom of the head lamp once the driver module (with the external heat sink fins) has been removed.
and also replacing a membrane tape that should allow moisture to get out but not in. Removing the head lamps to apply the kit is cumbersome. Some sources on the internet claims that there is a de-moisturing process that starts
after a certain time. I have not experienced that this procedure, if it exists, work.
Obviously, the non-ventillated head lamp design was not a success. I have the same problem and plan to install silica gel bags myself.
There was another forum member from another thread (forgot which one) was to seal the headlight up completely as they think there isn't enough heat to cause issue that requires vents. That might be a method to move forward but I don't know if there are any risks even though LEDs generally do produce low heat.
01-29-2024, 02:41 PM
