2011 Toyota Tundra Regular Cab Owners Manual - Page 476
2011 Toyota Tundra Regular Cab Manual
Page 476 highlights
3-6. Using the interior lights Personal/interior lights and cargo lamp main switch Rear (type D) On/off Cargo lamp main switch ON The cargo lamp can not be individually turned off. DOOR position The cargo lamp comes on when a door is opened. They turn off when the doors are closed. OFF The cargo lamp can be individually turned on or off. 450