2010 Toyota Sienna Owners Manual - Page 215
2010 Toyota Sienna Manual
Page 215 highlights
2-3. Operating the lights and wipers Manual headlight leveling dial (vehicles with discharge headlights) The level of the headlights can be adjusted according to the number of passengers and the loading condition of the vehicle. Raises the level of the headlights Lowers the level of the headlights 2 When driving