We just got an ES 350 2 weeks ago. I turned on expanded voice commands in the settings section of the navigation system, on the voice page. I can say 'Warmer' or 'Cooler' and it will move the temp up or down 4 degrees. That's the only way you can move it, 4 degrees at a time, not a specific temp.
I find it easier(faster) to just hit the buttons on the steering wheel. Seems pretty worthless.
My quick technology guide shows that I should be able to work the audio system with these expanded voice commands too, but I don't have 'Play Artist' or 'Play Artist' on my shortcut menu and it doesn't recognize that command. Are you having any luck with that one?
