Toyota Sequoia 2018 Manual page 29

Fastening the rear center seat belt
1 Take out the plates, and then
pull the seat belt.
2
Push the plate into the buckle in
the order of plate "A" and plate
"B" until a clicking sound is
heard.
Plate "A", buckle "A"
Plate "B", buckle "B"
SEQUOIA_OM_USA_OM0C011U
1-1. For safe use
Plate "A"
Buckle "A"
29
1
Plate "B"
Buckle "B"
STO11ADU15