2011 Toyota Sienna Owners Manual - Page 316

2-1. Driving procedures Changing shift ranges in S mode When the shift lever is in the S position, the shift lever can be operated as follows: Upshifting Downshifting 2 When driving The initial shift range in S mode is set automatically to "5" or "4" according to vehicle speed. However, the initial shift range may be set to "3" if the AI-SHIFT has operated while the shift lever was in the "D" position. (→P. 225)