Hello all, I'm new here so forgive me if I'm posting this in the wrong spot. I have a 06 STS4 with the Bose touch screen stereo/nav system. The problem I'm having is that when I turn the car off I can still hear something humming or running in the Nav disc slot and I believe thats what is draining my battery overnight. I can even feed a disc into that slot with the car off but I can't eject it. If I push the eject button I hear the disc trying to play (some clicking etc) then stop. If I press eject 2-3 times the humming or what actually sounds like a small electric motor will stop running.

Is this a known issue? Can I fix it? or is it possible to disable the nav without disabling the stereo? I never use the nav so disabling it wouldn't bother me at all.

Thanks in advance for any help you can give me.