Toyota 2009 Tundra Owner's Manual page 359

NOTICE
n For normal operation after replacing the batteries
Observe the following precautions to prevent accidents.
Always work with dry hands.
l
Moisture may cause the battery to rust.
l Do not touch or move any other components inside the remote controller.
Do not bend any of the battery terminals.
l
3-3. Using the rear audio/video system
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