Even though I have my 2013 Prius for 2 months, I just started trying the voice command system. I find that the volume of the voice prompts are very very low, and can't figure out how to raise that volume. The volume controls on the steering wheel have no effect, the radio volume control knob doesn't do anything, and there's no icon on the audio/navigator screen to make the voice prompts any louder (that I can see or find). It's probably something real easy and I'm just missing it, right?
Press setup on your multi desplay and select navigation option, there you will find voice setting for the car.
