Lexus GS450h Owner's Manual page 67

Installing child restraints using a seat belt
Rear-facing  Baby seat/child seat
■
Place the child restraint system
1
on the rear seat facing the rear of
the vehicle.
Run the seat belt through the
2
child restraint system and insert
the plate into the buckle. Make
sure that the belt is not twisted.
Install a locking clip near the tab
3
of the lap and shoulder belt by
inserting the lap and shoulder
webbing through the recesses of
the locking clip. Buckle the belt
again. If the belt has any slack,
release the buckle and reinstall
the locking clip.
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1-1. For safe use
1