Toyota Lexusc Owner's Handbook Manual page 405

AUDIO
(h) Changing audio language
"
Controller button
1
DVD video only —
Push the "Audio" switch on the screen or the "AUDIO"
button on the controller, and the changing audio language
screen will appear.
386
Screen switch
2
Each time you push the "Audio" switch, another language
stored on the disc is selected.
The selected audio language will appear on the screen.
Push the "Back" switch to return to the previous screen.