FORD 2013 E-450 v.1 - Manual (Page 31)

Combining Safety Belt and LATCH Lower Anchors for Attaching
Child Safety Seats
When used in combination, either the safety belt or the LATCH lower
anchors may be attached first, provided a proper installation is achieved.
Attach the tether strap afterward, if included with the child seat.
Using Tether Straps
Many forward-facing child safety seats include a tether strap
which extends from the back of the child safety seat and hooks
to an anchoring point called the top tether anchor. Tether
straps are available as an accessory for many older safety seats.
Contact the manufacturer of your child seat for information about
ordering a tether strap, or to obtain a longer tether strap if the tether
strap on your safety seat does not reach the appropriate top tether
anchor in the vehicle.
Attach the tether strap only to the appropriate tether anchor as shown.
The tether strap may not work properly if attached somewhere other
than the correct tether anchor.
Note: If you install a child seat with rigid LATCH attachments, and have
attached the top tether strap to the proper top tether anchor, do not
tighten the tether strap enough to lift the child seat off the vehicle seat
cushion when the child is seated in it. Keep the tether strap just snug
without lifting the front of the child seat. Keeping the child seat just
touching the vehicle seat gives the best protection in a severe crash.
Child Safety 31
2013 Econoline (eco)
Owners Guide gf, 1st Printing
USA (fus)