[theeduke]

How do you shut off the Audio System on a 2018 Goldwing?

 

[RickLB]

I don’t think you can. Turn your volume down or
When playing an audio
Press and hold switch to mute the volume and to pause a track

 

[Art H.]

press "source" several times to select "AUX"

 

[Jefro1]

How do you shut off the Audio System on a 2018 Goldwing?

It can't be shut off.

You have several options.
Hit the Source button on the left bar controls, and switch it to Aux.
If you don't have an ipod connected, the screen will be blue with no graphics, and there will be no sound from the speakers.

Or you can simply push the Volume Button down on the left bar to completely kill all the audio from all sources.

The FM, AM, NAV, USB (if you have a flash drive plugged in), XM (if you have an antenna plugged in) all are constantly active in the background for your instant use if you choose to select them.
Jefro.