We got our Navi back on Thurs evening. It was at the dealer from Mon-Thurs.
They initially found the headlight assembly to be defective. However, they informed us that since it is a $4000 part that they were instructed by Lincoln to perform extensive testing on every component that has to do with the headlight. That took four days.
Also, they informed me on Wed that they had ordered a headlight but it was on backorder with no time estimate. I called the concierge service and asked if they could provide additional info. They said they would work on it. Somehow, miraculously a headlight appeared the next day?? The dealer attributes it to my concierge call.
Anyway, it seems to be in working order. I think Lincoln needs to bite the bullet and admit they got a bad lot of these led headlights.
Lets hope this is the last of these gremlins.