I did some experiments on my vehicle and hope that the data might help others out. I suspect that my issue was only that I had the hood open for repairs, and that won't allow the vehicle to shut down properly. I disconnected the hood sensor and shorted it out, and then measured the current flow with the car locked:
- 6.2A at first
- Dropped to .45A after a minute
- Dropped to .15A after another minute
- Dropped to .01A after 2 minutes more
I decided to measure what was happening with the car unlocked, too:
- 6.2A again at first
- 6.1A after a minute
- .52A after another minute
- Stayed at .52A for a full 10 minutes
- .45A after 13 minutes since the car was locked
- .16A 1 minute after that
- 0A a minute later
- Open door with the keys: 8.6A as mirrors flexed out, etc.
No further sign of a parasitic draw.I reconnected the hood latch sensor, but I am (hopefully) done working on it for awhile. Lesson learned.