Bluetooth iPhone Synching Chlleneges

I have an '09 B200 Turbo with the harman/kardon LOGIC7 surround sound system option. I have just purchased a new 3G iPhone and cannot seem to synch it with the car's bluetooth. I have looked at the manual, put both the phone and the audio system on "discover modes" and they are not talking. Here are my questions:

1. How did you synch your iPhone to the car; and
2. How do i get the car's Bluetooth code (I forgot it)?

I should also tell you that my iPhone replaced my Blackberry Bold and i had no syncing issues.

Thanks!