Thanks, that is a great answer.
FYI, I have 2 nearby dealers. Called the closest one. the service rep seemed stressed, noting they have "skeleton crew". Took a drive by, they are under major construction, and appeared that service was working on Sunday in small space. Next one (Bowser) said "come on down". However, service writer there did not recognize the term "post scan", but told me diagnostic scan cost $115. I'll go there tomorrow, the body shop guy seems sharp, and he is the contact with the insurance company.