FORD 2015 F-550 v.1 - Manual (Page 34)

All safety restraints in the vehicle are
combination lap and shoulder belts. The
driver safety belt has the first type of
locking mode. The front outboard
passenger and rear outboard seat safety
belts have both types of locking modes
described as follows:
Vehicle Sensitive Mode
This is the normal retractor mode, which
allows free shoulder belt length
adjustment to your movements and
locking in response to vehicle movement.
For example, if the driver brakes suddenly
or turns a corner sharply, or the vehicle
receives an impact of about 5 mph
(8 km/h) or more, the combination safety
belts will lock to help reduce forward
movement of the driver and passengers.
In addition, the retractor is designed to lock
if the webbing is pulled out too quickly. If
this occurs, let the belt retract slightly and
pull webbing out again in a slow and
controlled manner.
Automatic Locking Mode
In this mode, the shoulder belt is
automatically pre-locked. The belt will still
retract to remove any slack in the shoulder
belt. The automatic locking mode is not
available on the driver safety belt.
When to Use the Automatic Locking
Mode
Use this mode any time a child safety seat,
except a booster, is installed in passenger
front or rear seating positions. You should
properly restrain children 12 years old and
under in a rear seating position whenever
possible. See Child Safety (page 15).
How to Use the Automatic Locking
Mode
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1. Buckle the combination lap and
shoulder belt.
2. Grasp the shoulder portion and pull
downward until the entire belt is pulled
out.
3. 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
Unbuckle the combination lap and
shoulder belt and allow it to retract
completely to disengage the automatic
locking mode and activate the vehicle
sensitive (emergency) locking mode.
Safety Belt Extension Assembly
WARNING
Do not use extensions to change the
fit of the shoulder belt across the
torso.
If the safety belt is too short when fully
extended, you can obtain a safety belt
extension assembly from an authorized
dealer.
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Super Duty (), enUSA
Safety Belts