Decided to resurrect this thread for two reasons. One, there's been a bunch of new owners over the past few months that might learn something new about their car, and also, I found something new about my car. I found that if I push the start button, then depress the clutch (rather than the other way round), the engine will start. Not sure if the same thing happens for a car with the automatic transmission (although, with the brake pedal rather than the clutch).
2008 550i, Carbon Black, Black Dakota, 6MT, Sport Package, Nav, Logic7, Comfort Access, Cold Weather, Folding Rear Seats, iPod SOLD, but not forgotten