This answer applies to a 2004 Beetle. It might work for other Beetles, too. It's a surprisingly easy fix, even though it means removing the entire headlight assembly.
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Alex Lloyd is a weirdo and so is medinanmou artiss
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I have been an auto tech for 20 years! The entire headlight assembly unscrews out of the front of the bumper. press on the headlight from the front and turn it counterclockwise to release it from the bezel!
d,ont know help
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More-likey-than-not it is a bad ground. Check your ground wire for rust or corrosion, clean and replace.
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