Toyota 2009 Tundra Owner's Manual page 136

1-6. Theft deterrent system
For vehicles sold in Canada
This device complied with RSS-210 of Industry Canada.
Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interference, includ-
1
ing interference that may cause undesired operation of the device.
NOTICE
To prevent damage to the key
n
Do not modify, remove or disable the engine immobilizer system. If any
unauthorized changes or modifications are made, the proper operation of
the system cannot be guaranteed.
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