2021 FORD F-450 Owners Manual

Page 41 of 666

FORD F-450 2021  Owners Manual PRINCIPLE OF OPERATION
WARNING: Always drive and ride
with your seatback upright and the lap
belt snug and low across the hips. WARNING: 
Children must always
be properly restrained. WARNING: 
Do not

Page 42 of 666

FORD F-450 2021  Owners Manual •
Crash sensors and monitoring system
with readiness indicator.
The seatbelt pretensioners are designed
to tighten the seatbelts when activated. In
frontal and near-frontal crashes, the
seatbelt pre

Page 43 of 666

FORD F-450 2021  Owners Manual 1. To lengthen the lap belt, pull some
webbing out of the shoulder belt
retractor.
2. While holding the webbing below the tongue, grasp the tip (metal portion)
of the tongue so that it is parallel to

Page 44 of 666

FORD F-450 2021  Owners Manual Seatbelt Locking Modes
WARNING: If your vehicle is
involved in a crash, have the seatbelts
and associated components inspected
as soon as possible. Failure to follow this
instruction could result in p

Page 45 of 666

FORD F-450 2021  Owners Manual 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

Page 46 of 666

FORD F-450 2021  Owners Manual SEATBELT REMINDER
Belt-Minder™
This feature supplements the seatbelt
warning function. It provides additional
reminders by intermittently sounding a
tone and illuminating the seatbelt warning
light

Page 47 of 666

FORD F-450 2021  Owners Manual 4. While the seatbelt warning light is on,
buckle then unbuckle the seatbelt.
After Step 4, the seatbelt warning light
flashes for confirmation.
• This will switch the feature off if it is
currently

Page 48 of 666

FORD F-450 2021  Owners Manual PRINCIPLE OF OPERATION
WARNING: Airbags do not inflate
slowly or gently, and the risk of injury
from a deploying airbag is the greatest
close to the trim covering the airbag
module. WARNING: 
All occu