2013 Toyota Sienna Owners Manual - Page 505

1-7. Safety information STEP 3 Fully extend the shoulder belt and allow it to retract to put it in lock mode. In lock mode, the belt cannot be extended. 1 Before driving STEP 4 While pushing the child restraint system into the rear seat, allow the shoulder belt to retract until the child restraint system is securely in place. After the shoulder belt has retracted to a point where there is no slack in the belt, pull the belt to check that it cannot be extended. STEP 5 If the child restraint has a top tether strap, the top tether strap should be latched onto the top tether strap anchor. (→P. 205, 206) 203 SIENNA_OM_OM45472U_(U)