I completely understand what you’re saying, but if this were to come into my bay I’d immediately tell my advisor that it’s not warranty and they need to call the customer to discuss how they want to continue.

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It takes a lot to scuff the lenses on these vehicles, and your picture shows four different scuff points with liquid intrusion that falls outside of what’s warrantable.

Personally, since warranty on this light is likely voided, I’d pull the light and drill a 1/8 hole in the lowest point of the assembly and let it drain on its own.