I have a 2013 Edge SEL with MY TOUCH/NAV System.  I needed to use the delayed reboot utility today but it took me about 4 times to get it to work sucessfully.  I had had the engine running and then put the USB memory stick in one of the slots.  As soon as it downloaded and said OK, I pressed OK, pulled the USB stick out, turned the engine off and then open and shut the door.  The first 3 times the MFT never rebooted as the instructions said it would.  The fourth time I did the same thing but left the key in the ingintion after the engine was off.  Nothing happened after 3 or 4 minutes and decided to turn the engine on.  When I turned the engine on this time, the scheduled maintenance screen came up and I knew then it had worked.  My question is, does it make a difference if I leave the key in the ignition or not?  Is it correct to assume that with the engine completely off the MFT should reboot without any power?  I am not sure why the screen did not reboot with the scheduled maintenance screen, but did after I started the car after a few minutes.  Any help or clarification would BE GREATLY APPRECIATED. 
  
Thanks, 
Dean