Lexus 2004 GX470 Owner's Manual page 299

AUDIO
(a) Before using the controller (for new vehicle owners)
A battery is already set in the controller with an insulating
sheet, which prevents the battery from being discharged.
Before using the controller, remove the insulating sheet.
NOTICE
Observe the followings, otherwise the controller may be
damaged.
D Do not drop or strongly knock the controller against
hard objects.
D Do not sit on or place heavy objects on the controller.
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(b) Using the controller
To use the rear seat entertainment system controller,
direct the signal output portion of the controller to the
signal reception portion of the rear seat entertainment
system display.
The controller does not operate properly when the signal
reception portion of the display is exposed to direct sunlight.
Block the display from direct sunlight.
Finish