Mazda 2005 mx-5 miata Manual page 18

Essential Safety Equipment
Seat Belt Systems
qAutomatic Locking Mode
Always use the automatic locking mode to keep the child-restraint system from shifting to
an unsafe position in the event of an accident. To get the seat belt into the 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. See the
section on child restraint (page 2-13).
2-6