Ford 2015 F-150 Owner's Manual page 25

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4. Insert the belt tongue into the proper
buckle (the buckle closest to the
direction the tongue is coming from)
for that seating position until you hear
a snap and feel the latch engage. Make
sure the tongue is latched securely by
pulling on it.
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5. To put the retractor in the automatic
locking mode, grasp the lap portion of
the inflatable safety belt and pull
upward until all of the belt is pulled out.
Note: The automatic locking mode is
available on the front passenger and rear
seats.
F-150 (TFC) Canada/United States of America, enUSA, Fourth Printing
Child Safety
Note: Unlike the standard safety belt, the
inflatable safety belt's unique lap portion
locks the child seat for installation. The
ability for the shoulder portion of the belt to
move freely is normal, even after the lap belt
has been put into the automatic locking
mode.
Note: The lock-off device on some child
restraints may not accommodate the
shoulder portion of the inflatable safety belt.
Follow all instructions provided by the
manufacturer of the child restraint regarding
the necessary and proper use of the lock-off
device. In some instances, these devices
have been provided only for use in vehicles
with safety belt systems that would
otherwise require a locking clip.
6. Allow the belt to retract to remove
slack. The belt will click as it retracts
to indicate it is in the automatic locking
mode.
7. Try to pull the belt out of the retractor
to make sure the retractor is in the
automatic locking mode (you should
not be able to pull more belt out). If the
retractor is not locked, unbuckle the
belt and repeat Steps 5 and 6.
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