Ford Expedition Owner's Manual page 205

Carefully follow all of the manufacturer's instructions included
with the safety seat you put in your vehicle. If you do not install
and use the safety seat properly, the child may be injured in a sudden
stop or collision.
Installing child safety seats with combination lap and shoulder
belts
Airbags can kill or injure a child in a child seat. NEVER place a
rear-facing child seat in front of an active airbag. If you must use
a forward-facing child seat in the front seat, move the seat all the way
back.
Children 12 and under should be properly restrained in the rear
seat whenever possible.
1. Position the child safety seat in a
seat with a combination lap and
shoulder belt.
2007 Expedition (exd)
Owners Guide (post-2002-fmt)
USA (fus)
Seating and Safety Restraints
205