Yu need to access the
service screen
IF available on the 2007's. Can't confirm if yu have this. This procedure is well documented and might or
might not work on your MY "07. Check this site and others.
Google it too.
On my HL/with Nav , my service screen is accessible and I can press "overide" to allow complete viewing while driving. This procedure will unlock FM messages and allow for other "while moving" features to be used if Nav. equipped.
Recently, I have installed a Lockpick from
CoastalEtech.com and it gives me easier , automatic access to the over ride setting. Then all screens are displayed even while moving.
Go to Priuschat forums to find out more about your Prius too.
LT