I am testing my charging system and all accessories should be off.
Can't figure out how to turn off the radio while the engine is idling. I have M-mask and tried to hold the volume knob for few second but it just mutes it. Just wondering if the idrive can be turned off complitly while engine is idling?

 

I think you have to access behind iDrive unit and unplug.
I don't think there is a fuse just for iDrive.

 

Thanks
that's what I thought. Seams that it is constantly on.