DNX525DAB - Mute Navigation Voice

[DavidApp]

Hi,

I cannot seem to mute the navigation voice. Menu > Settings > Navigation > Mute has no effect. Similarly if I turn the voice volume to zero, when there should be a voice prompt, the music just goes silent then comes back in. Within the Garmin settings there is nowhere to mute the voice either.

Has anyone had any success?

Thanks

Dave