There are two general methods used to install child safety seats:
Check the child safety seat manufacturer's instructions and the table in this manual to determine which installation method to use. Some child safety seats can be installed using either method. Always follow the child safety seat manufacturer's instructions.
Installing Seat Belt Retained Child Seats
First, make sure that the child safety seat is appropriate for the weight, height, and age of the child.
Avoid dressing the child in bulky clothing and do not place any objects between the child and the restraint system.
Adjust harnesses for every child, every trip.
To securely hold child safety seats, all passenger seating positions are equipped with an automatic locking retractor (ALR) feature that, by fully extracting the seat belt (beyond the length needed for a typical adult occupant), locks the belt into place until the seat belt is unbuckled and the webbing is fully retracted. The ALR mechanism operates as a ratchet, winding in slack and preventing the seat belt from extending any further until it has been completely rewound. When installing a child safety seat with integrated restraints, engage the belt's automatic locking retractor by pulling the seat belt webbing until it is fully extended. The ALR system engages only when the seat belt is at its maximum extension point.
The automatic locking retractor (ALR) feature is not used for booster seats in which a large child is restrained by the vehicle's seat belts directly, and therefore not using a child safety seat's integrated restraints.
NOTE: An automatic locking retractor disengages only when the seat belt is unbuckled and fully retracted. The belt can then be worn as a normal belt, sliding freely in and out and locking tight only in an emergency. Once disengaged, the belt must be fully extended to re- engage the locking mechanism whenever you install a child safety seat.
Always follow the detailed instructions provided by the child safety seat manufacturer. General guidelines are provided below.
1. Place the child safety seat in Model S, and fully extend the seat belt. Route and buckle the seat belt in accordance with the child safety seat manufacturer's instructions.
2. Allow the seat belt to retract, and remove all slack in the seat belt while firmly pushing the child safety seat into the Model S seat.
3. Attach the upper tether strap(s), as required by the manufacturer of the child restraint system.