Toyota 2014 Sienna Manual page 108

1-3. Adjustable components (seats, mirrors, steering wheel)
Installing the second seats
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Installing the second outside seats
STEP 1
Align the marking on the seat side cover to the marking on the
rail cover.
Tip-up seat
Ottoman seat
108
SIENNA_OM_OM45483U_(U)
Align the marking on the seat
front cover to the rail.
Align the marking on the seat
back cover to the rail.