Does anyone know how to adjust the volume of the voice on the navigation system? It is very muffled. The car is a 2000 Ml55.

 

I am not sure if the controls are the same as my MB, but usually if you hold the NAV Menu or NAV voice button in and adjust the radio volume at the same time, the nav voice volume will adjust accordingly.

Good Luck!

 

Thanks Beemer! It worked, Mark