FORD 2009 Expedition v.2 - Manual (Page 217)

seconds with the light off, then followed by the safety belt warning
light flashing four times per second for three seconds again.
AIRBAG 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.
Airbags DO NOT inflate slowly;
there is a risk of injury from a
deploying airbag.
WARNING: 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.
WARNING: When possible, all children 12 years old and under
should be properly restrained in a rear seating position.
2009 Expedition (exd)
Owners Guide, 2nd Printing
USA (fus)
Seating and Safety Restraints
217