Ram Trucks 2015 ProMaster Commercial - Uconnect 5.0 Manual - Manual (Page 82)

Use Day Colors
Press this button to display the map in brighter colors.
Turn Off Voice Guidance
Press this button to switch off voice guidance. You will no longer hear spoken route
instructions but you will still hear information such as traffic information and warnings.
Voice guidance is also switched off when the main unit volume is muted.
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NAVIGATION 81