Fisher-Price GROW-WITH-ME 79711 - Manual (Page 14)

Explanation – This lap and shoulder belt system is attached
to the vehicle’s door and moves when the door is opened.
This system will not keep the car seat secure.
NEVER USE
NEVER USE These Vehicle Belt Systems
Door Mounted Lap and Shoulder Belt
Explanation – The lap belts with these systems cannot be
tightened for a firm fit. Also, the shoulder belt moves along
a track and may become entangled with the car seat when
the door is opened.
Motorized Shoulder Belt NEVER USE
5-Point Harness Mode 12 20-40 lbs.