2010 Toyota Sienna Owners Manual - Page 416
2010 Toyota Sienna Manual
Page 416 highlights
3 -7 . Ot he r int e rior fe a t ure s Se at he at e rs (if e quippe d) Front passenger's seat On The indicator light comes on. Adjusts the seat temperature The further you move the dial upward, the warmer the seat becomes. Driver's seat