FORD 2003 F-150 v.4 - Manual (Page 100)

Safety belts and seats can become hot in a vehicle that has been
closed up in sunny weather; they could burn a small child. Check
seat covers and buckles before you place a child anywhere near them.
Combination lap and shoulder belts
1. Insert the belt tongue into the proper buckle (the buckle closest to
the direction the tongue is coming from) until you hear a snap and feel it
latch. Make sure the tongue is securely fastened in the buckle.
• Front seats
• Rear seats (if equipped)
2. To unfasten, push the release button and remove the tongue from the
buckle.
Seating and Safety Restraints
100