TOYOTA 2011 Tundra - Manual (Page 85)

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1-3. Adjustable components (seats, mirrors, steering wheel)
Power seat
Seat position adjustment switch
Seatback angle adjustment switch
Driver’s seat cushion (front) angle adjustment switch
Driver’s seat vertical height adjustment switch
Driver’s seat leg support adjustment switch (if equipped)
Seat lumbar support adjustment switch (if equipped)
Passenger’s seat Driver’s seat