Toyota Lexusc Owner's Handbook Manual page 404

(g) Changing the subtitle language
"
1 For DVD video 2 For DVD audio
3 Controller button
Push the "Sub Title" switch on the screen or the "SUB
TITLE" button on the controller, and the changing subtitle
language screen will appear.
Each time you push the "Sub Title" switch, another
language stored on the disc is selected.
To turn off the subtitles, push the "Hide" switch.
Push the "Back" switch to return to the previous screen.
The selected subtitle language will appear on the screen.
AUDIO
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