Ford F-250 2011 Owner's Manual page 213

WARNING: Failure to inspect and if necessary replace the
safety belt assembly or child restraint system under the above
conditions could result in severe personal injuries in the event of a
collision.
2011 F-250/350/450/550 (f23)
Owners Guide, 4th Printing
USA (fus)
I n f o r ma t i o n P r o v i d e d b y :
Seating and Safety Restraints
213