TOYOTA 2011 Tundra - Manual (Page 125)

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1-4. Opening and closing the windows and moon roof
n The power back window can be operated when
The engine switch is in the ON position.
n Operating the power back windows after turning the engine switch off
The power back windows can be operated for approximately 43 seconds
even after the engine switch is turned to the ACC position or turned off. They
cannot, however, be operated once either front door is opened.
CrewMax models
Opening
Closing