1.)You do not need to recalibrate anything your HUD. The return spring on the mirror broke. Look in the how-to for directions on how to fix. There are twenty threads on it.

2.)Could be several things with the window, tear ur door apart and look around.

3.)If you are audacious enough you could replace the bulbs in the deck urself. But then you would need to unlock it for the car again. (ie: theftlock or whatever it is called)