Jeep Grand Cherokee 2016 Owner's Manual page 112

110 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE
6. Try to pull the webbing out of the retractor. If it is
locked, you should not be able to pull out any web-
bing. If the retractor is not locked, repeat step 5.
7. Finally, pull up on any excess webbing to tighten the
lap portion around the child restraint while you push
the child restraint rearward and downward into the
vehicle seat.
8. If the child restraint has a top tether strap and the
seating position has a top tether anchorage, connect
the tether strap to the anchorage and tighten the tether
strap. See the section "Installing Child Restraints
Using the Top Tether Anchorage" for directions to
attach a tether anchor.
9. Test that the child restraint is installed tightly by
pulling back and forth on the child seat at the belt
path. It should not move more than 1 inch (25.4 mm)
in any direction.
Any seat belt system will loosen with time, so check the
belt occasionally, and pull it tight if necessary.