2009 Toyota Sienna Owners Manual - Page 115
2009 Toyota Sienna Manual
Page 115 highlights
1-3. Adjustable components (seats, mirrors, steering wheel) n Release method The belt can be completely released when not required, such as when folding down the third seat. STEP 1 Insert the key into the hole on the center seat belt buckle to release the tab (with the hooked end), and allow the belt to retract. STEP 2 Stow the seat belt tabs in the cover set in the roof as shown. n Extracting the belt Pull tab out and pull the belt out a little. Then pull tab out. 86