FORD 2013 Explorer v.3 - Manual (Page 41)

FASTENING THE SAFETY BELTS
The front outboard and rear safety restraints in the vehicle are
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.
2. To unfasten, press the release
button and remove the tongue from
the buckle.
40 Safety Belts
2013 Explorer (exp)
Owners Guide gf, 3rd Printing
USA (fus)