2008 Toyota Camry Navigation Manual - Page 168

AUDIO SYSTEM D Speech command system D Turning the system on and off By pushing the switch above, you can operate the speech command system. For the operation of the speech command system and the list of commands, see pages 174 and 177. "POWER·VOLUME": Push this knob to turn the audio system on and off. Turn this knob to adjust the volume. The system turns on in the last mode used. "AUDIO": Push this button to display touch screen buttons for audio system (audio control mode). You can select the function that enables automatic return to the previous screen from the audio screen. See "(a) Automatic transition" on page 180 for details. 188