Lexus 2003 SC430 Owner's Manual page 158

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2. To remove the child restraint system, press the
buckle–release button and allow the belt to retract.
Using a top strap
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Follow the procedure below for a child restraint system
that requires the use of a top strap.
When installing a top strap, the retractable hardtop should be
open. How to open the retractable hardtop can be found in
"Retractable hardtop" on page 80.
2003 SC430 from May '03 Prod. (OM24449U)
COMFORT ADJUSTMENT
141