2009 Toyota Sequoia Owners Manual - Page 442
2009 Toyota Sequoia Manual
Page 442 highlights
3 -7 . Ot he r int e rior fe a t ure s Se at he at e rs (if e quippe d) n Front seat On The indicator comes on. Adjusts the seat temperature. The further you turn the dial upward, the warmer the seat becomes. 408