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headlight fogged

supersonic94587
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supersonic94587 Member

supersonic94587

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Hello, I have a US 2002 C4 Cab with Tiptronic and noticed the passenger headlight fogged slightly when it is on and remained fogged until it is off. I swapped the whole assembly with my friends Porsche for troubleshooting and it was not the problem with the headlight because mine is working fine on his Porsche. So far I am unable to find any relevant information about this on this site. Has anyone encounter this problem? If so what was the fix? Thank you in advance for the information.

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Loren Member

Loren

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There is a TSB on this.

You need to make sure the bumper and headlight vents are not blocked with debris. I have also seen a poorly aligned bumper cover that made this problem worse.

BTW... Porsche says a small amount of "fogging" is normal and the ventilation system should clear it in normal driving.

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