Yeah I saw the components and what state they were in as I was looking and graphing. I just seem to remember reading in other forums that if you did something, say with the windshield, that it may need to be calibrated. That 's the sort of thing I was wondering about. I had a program by another company, for a different manufacturer, that would allow me to remap the air fuel ratio, calibrate the speedometer, most anything I might want to do. They don't do BMW though.
I'm satisfied that I can do diagnostic checks and reset that service indicator (that thing really bugged me) I just didn't want to be under utilizing the device because I am unaware of its full capabilities.
When the weather cools down and my garage becomes more comfortable I'll spend more time poking around. Till then unless I need to do diagnostics I'll just reset the service indicator, because I can.