1997 Ford Aerostar Owner's Manual - Page 144

RWARNING Failure to follow all of the instructions on the use of this child restraint system can result in your child striking the vehicle's interior during a sudden stop or crash. How to use the Built-In Child Seat Read the following procedures and all of the labels on the Built-In Child Seat before using the seat. RWARNING Never use the Built-In Child Seat as a booster cushion with the adult safety belts. A child using the adult belts could slide forward and out from under the safety belts. 1. Pull the headrest release strap and grasp the headrest as shown in Figure 1. Then release the strap and rotate the headrest fully until the latch "clicks" in the full up position. Figure 1 2. Continue to unfold the child seat until it rests on the seat as shown in Figure 2. 142