Lexus IS F 2012 Owner's Manual page 121

Child restraint systems with a top tether strap
STEP 1
STEP 2
Laws and regulations pertaining to anchorages
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The LATCH system conforms to FMVSS225 or CMVSS210.2.
Child restraint systems conforming to FMVSS213 or CMVSS213 specifications
can be used.
This vehicle is designed to conform to the SAE J1819.
CAUTION
When installing a booster seat
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Do not fully extend the shoulder belt to prevent the belt from going to ALR lock
mode: (P. 66)
ALR mode causes the belt to tighten only which could cause injury or discomfort to
the child.
1-7. Safety information
Secure the child restraint using a
seat belt or the lower anchors, and
lock the head restraint in place at
the original position.
Open the anchor bracket cover,
latch the hook onto the anchor
bracket and tighten the top tether
strap.
Make sure the top tether strap is
securely latched.
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