You're setting in the car....You start the engine and move the transmission to neutral. with me so far? Ok now you turn the key to ACC (or one notch to the left just so the motor shuts down.....and I'm assuming at this point you have all ready have flipped the switch for the fuse, if not, do it now.
At this time, I usually verify that all accessories are off, windows closed, doors shut and the parking brake is released. and the trans is definitely in neutral.
However, if for some reason you have left anything on (radio, nav, AC, ect) when you "open" then door to get out, all those accessory items will immediately turn off. When you then "shut" the door, it does nothing to those accessory items because they are already off when you "opened" the door.
Does this make more sense? Sorry if I was confusing previously.
Ron, Sandie, and Maggie May
2013 Tiffin Phaeton 42LH
2011 GMC Terrain SLT-2