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Message: <blockquote data-quote="Gerald 5" data-source="post: 310535" data-attributes="member: 10337"><p>I am no sifu myself but I have seen it once in a workshop. An X5 has just change a new set of head lamp while servicing his car there and as usual after the service is completed they will take it out to have a quick engine wash. The car came back with a foggy head lamp. Apparently there is this tiny hole at the back of the lamp where water can go in if the bonnet is open, what the boss did was to on the head lamp and uses a "air gun" don't know if this is a right name to blow it dry through the hole and after couple of mins the fog is gone. I was told to understand that this is normal when the bonnet is not close properly. You wash you car yourself? did you wash the engine?</p></blockquote><p></p>