OK , so it has to be in an"I" configuration which is straight up and down.
When you say you took it apart ,what did you take apart?
The adjusting bolt or the sensor?
Sorry for asking so much questions but the dealer did an alignment on my car the other day and screwed up my adjusters.
I had fixed it before but now it gives me the error on my headlights and still initializes the beams on start up.
Also did the error come no as soon as you started the car or after driving a few short feet. Mine starts fine but comes on after 40 feet or so every time