Lexus LS460 Owners Book page 328

3-1. Using the touch screen
General settings
This screen is used for various settings such as language selection and
setting operation sounds.
Touch "General" on the "Setup" screen.
■ Rear system lock setting
The operation lock on the rear seat entertainment system can be
turned on or off.
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Select language
Rear seat entertainment system
lock (if equipped)
Beep on/off
Select keyboard layout
Delete personal data
Save the settings
Make sure to save after changing
settings.