Tl* the contact owns a 2010 toyota sienna. the contact stated that the headlight assembly covers were foggy and created dull illumination at a distance. the dealer stated that they had a process to spray the headlight covers and make them ultraviolet, but there was no explanation as to what caused the issue. the manufacturer was made aware of the failure and stated that it was normal wear and tear. the failure mileage was approximately 57,000.