Start-up procedure is still the same as in 1.1.0.9. However there are minor changes in the lamps test function.
Also
Can anyone elaborate on that further?
Those are just automatic actions performed by CDU IRL when the aircraft just has landed. Current steerpoint will be changed, and, after the process is complete, it will be reset to the first waypoint in the DB. All other actions performed by CDU, will not change anything in the aircraft. Player should take no action on this.