Mazda 2012 MX-5 Owner's Manual page 23

Essential Safety Equipment
Seat Belt Systems
qAutomatic Locking Mode
To enable seat belt automatic locking mode, pull it all the way out and connect it as
instructed on the child-restraint system. It will retract down to the child-restraint system
and stay locked on it. If the LATCH lower anchors are not used alone for LATCH style
junior seats and infant carriers without tethers, always use the automatic locking mode to
keep the child-restraint system from shifting to an unsafe position in the event of an
accident. See the section on child restraint (page 2-18).
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