Edwina

I bought my 2010 Edge yesterday (woohoo) and started to mess around with the Sync system. I plugged in my ipod through the USB port and it never turns off. I can turn my car off and leave, but the ipod continues to run and I am afraid that it is draining my battery. Anyone else have this issue? Anyone know about this but lets the ipod remain plugged in because it's not going to drain the battery fast enough?