2012 Toyota Sienna Navigation Manual - Page 425
2012 Toyota Sienna Manual
Page 425 highlights
REAR VIEW MONITOR SYSTEM (b) Selecting wide or regular mode Regular mode and wide mode are switched when the wide/regular mode selection switch is touched. The current mode is indicated by the yellow indicator. (c) The modes of the rear view monitor system The rear view monitor system has the following three modes. Use each mode according to need. " Regular mode " Wide mode 238