After following Fred's video step-by-step, I replaced the air filter on my 2012 NAVI/XM. I thought everything went really well until I turned on the ignition and the only thing displayed on the screen was the blue navigation screen. When I push the "display" button nothing happens. I checked the electrical connection next to the ignition switch (the one that's a bear to get open), and it's fully connected. That's the only place where I know to check. Any ideas of what may be wrong before I contact the dealer?