2015 Honda Accord
Replaced the battery in my wife's car. After replacing the battery, it seems as though none of these things work when the car is off - Headlights, Dome light, Power locks, key fob (tried both the regular and backup fob).
When you turn the car on, all of these things work totally fine.
Not sure where to look to solve the problem.
Edit: When replacing the battery, I used one of those memory savers plugged into the OBD2 port. Had it plugged into the 12v cigarette lighter of my other car for the power source. I just discovered that I can't get power to the OBD2 port, even when the car is on.