Driver side high and low beam out. I watched the youtube videos. They show how to get to the dust cover and the procedure from there. The issue is my headlight assembly does not have a dust cover to twist and remove. Is this a sealed unit? I saw online the unit for $1150. I don't even want to get a price from the dealer! If anyone knows, do I have to replace the whole unit If so, some place for a good quality (reasonably priced) replacement.