Ford 2010 Mariner Owner's Manual page 510

Seating and Safety Restraints
• Grasp the shoulder portion and
pull downward until the entire
belt is pulled out.
• Allow the belt to retract. As the belt retracts, you will hear a clicking
sound. This indicates the safety belt is now in the automatic locking
mode.
How to disengage the automatic locking mode
Disconnect the combination lap/shoulder belt and allow it to retract
completely to disengage the automatic locking mode and activate the
vehicle sensitive (emergency) locking mode.
WARNING: After any vehicle collision, the safety belt systems
at all seating positions (except the driver position, which doesn't
have this feature) must be checked by an authorized dealer to verify
that the automatic locking retractor feature for child seats is still
functioning properly. In addition, all safety belts should be checked for
proper function.
WARNING: BELT AND RETRACTOR ASSEMBLY MUST BE
REPLACED if the safety belt assembly "automatic locking
retractor" feature or any other safety belt function is not operating
properly when checked by an authorized dealer. Failure to replace the
Belt and Retractor assembly could increase the risk of injury in
collisions.
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2010 Mariner (mrn)
Owners Guide, 1st Printing
USA (fus)