Repair is completed now.

It was actually the lock "actuator" (not "activator" as I previously posted) and it was covered by the warranty.

My service counselor knew exactly what I was talking about when I first scheduled the service appointment, and he said their service department had plenty of those parts on hand, so apparently it happens with Acuras.

Easy fix, quick repair, no cost. Just a hassle in getting a loaner car.

jb