If I am, say, in France I would like the voice prompts to utter the names of roads and towns in French. My Garmin (bought in UK) has "keyboard language" on the menu and I've changed this from "English" to "French". My unit (in Mercedes GLA) offers 4 different English voices but no French voices. The result is that the voice prompts are incomprehensible: the English voices "have a go" at pronouncing the French words but I cannot understand what is being said. How can I change the voice directions from English to French. Thanks in advance for help. (WhereamI?)