Toyota RAV4 Owner's Manual page 39

Fastening the seat belt (for the rear center seat)
Press the plate to release, and
1
then pull the seat belt.
Push the plate into the buckle in
2
the order of plate "A" and plate
"B" until a clicking sound is
heard.
Plate "A", buckle "A"
1
Plate "B", buckle "B"
2
RAV4_OM_OM42873E_(EE)
1-1. For safe use
Plate "B"
Buckle "B"
39
1
Plate "A"
Buckle "A"