Century has analyzed recent testing conducted by the Ford Motor Company on its inflatable seat belt system, and our recommended use is as follows for use in Ford and Lincoln vehicles with inflatable seat belt systems.
Rear-Facing Only Infant Car Seats: Century allows the use of Ford vehicle lap shoulder inflatable seat belts with rear-facing only infant car seats when installed without the base.  At this time, Century does NOT allow the use of inflatable vehicle belts for installation with rear-facing only infant car seats installed with a base. Century strongly encourages consumers to utilize the LATCH system for rear-facing only infant car seats installed with a base.
All-in-One Car Seats: All-in-One car seats are approved in all modes, but when installing do NOT use the shoulder belt lock-off (if included) with inflatable belt systems.