I removed the radio from my car and after a while I realized I left the NAV disc in the drive. How do I get it out without digging behind my dash for the connectors?
Well, here's the answer...
On the back of the radio, you'll find a connector that looks like this:

Apply 12v(+) to pin 1 and ground(-) to pin 11.
You can then press the eject button for the NAV disc. This also works to eject discs from the built-in CD changer. Simply press the load/eject button and select the disc(s) you wish to eject. The screen will illuminate so you can determine which slots (1-6) that you may have a disc in.
NO CAN signal needed!
Thanks also goes to Super T for assisting with pin out info.