Lincoln 2010 MKZ - Manual (Page 157)

Airbags can kill or injure a child in a child seat. NEVER place a
rear-facing child seat in front of an active airbag. If you must use a
forward-facing child seat in the front seat, move the vehicle seat all the
way back.
Children 12 and under should be properly restrained in a rear seating
position whenever possible. If all children cannot be seated and
restrained properly in a rear seating position, properly restrain the
largest child in the front seat.
Installing child safety seats with combination lap and shoulder
belts
If needed, when installing some high back child restraints, the head
restraints of the second row seating positions can be removed.
To remove the head restraint, insert
and push a tool, such as a large
paper clip, into the pin hole located
on the side of the guide sleeve and
press the lock/release button, then
pull the head restraint upward.
Seating and Safety Restraints
157
2010 MKZ (378)
Owners Guide, 3rd Printing
USA (fus)