Lexus 2003 LS Owner's Manual page 169

Types of child restraint system
Child restraint systems are classified into the following 3 types
depending on the child's age and size.
(A) Infant seat
(B) Convertible seat
(C) Booster seat
Install the child restraint system following the instructions
provided by its manufacturer.
(A) Infant seat
16L306
COMFORT ADJUSTMENT
(B) Convertible seat
16L307
(C) Booster seat
16L308
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