Toyota 2009 Tundra Owner's Manual page 87

1-3. Adjustable components (seats, mirrors, steering wheel)
Power seat
Passenger's 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
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Driver's seat