Mercury 2009 Mountaineer Owner's Manual page 218

Seating and Safety Restraints
Once the child safety seat has been installed using either the safety belt
or the lower anchors of the LATCH system, you can attach the top tether
strap.
Perform the following steps to install a child safety seat with tether
anchors:
1. Route the tether strap under the head restraint and between the head
restraint posts.
For vehicles with adjustable head restraints, route the tether strap under
the head restraint and between the head restraint posts, otherwise route
the tether strap over the top of the seatback.
2. Locate the correct anchor for the selected rear seating position.
When placing a child safety seat in the 2nd row center seating position
of the 5 passenger vehicle, the tether straps may be attached to either of
the tether anchors located at the rear of the cargo area.
• Behind 2nd row seat
218
2009 Mountaineer (mnt)
Owners Guide, 2nd Printing
USA (fus)