TOYOTA 2011 Tundra - Manual (Page 68)

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1-1. Key information
1
Before driving
NOTICE
n To prevent key damage (vehicles with engine immobilizer system)
l Do not subject the keys to strong shocks, expose them to high tempera-
tures by placing them in direct sunlight, or get them wet.
l Do not expose the keys to electromagnetic materials or attach any mate-
rial that blocks electromagnetic waves to the key surface.