To set a destination by address using voice commands, press the top switch on the steering wheel. Help me, I help you. The voice command screen will appear with a list of sample commands. Now say, get directions to an address. For directions to an address, please say the full address, including the city and the state or province. 1541 Sandoonway, San Marcos, California I heard 1541 Sandoonway said Marcos, California. Is that correct? Yes. Starting guidance for a new route. When the navigation screen appears, tap OK and turn by turn directions will begin. Please proceed to the highlighted route, then the route guidance will start.