FORD 2004 Expedition v.2 - Manual (Page 176)

safety belt assemblies in use in vehicles involved in a collision be
replaced. However, if the collision was minor and a qualified technician
finds that the belts do not show damage and continue to operate
properly, they do not need to be replaced. Safety belt assemblies not in
use during a collision should also be inspected and replaced if either
damage or improper operation is noted.
Refer to Interior in the Cleaning chapter.
AIR BAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Important SRS precautions
The SRS is designed to work with
the safety belt to help protect the
driver and right front passenger
from certain upper body injuries. Air
bags DO NOT inflate slowly; there is
a risk of injury from a deploying air
bag.
All occupants of the vehicle, including the driver, should always
properly wear their safety belts, even when an air bag
supplemental restraint system (SRS) is provided.
2004 Expedition (exd)
Owners Guide (post-2002-fmt)
USA English (fus)
Seating and Safety Restraints
176