The modern ix35 safety seat interface is located in the rear seat. For safety reasons, it is strongly required to install child protection seats on the rear seats. The following is the installation method of the safety seat: Fix the child protection seat with the "tether anchor" system: the tether anchor of the child protection seat is located behind the seat back. 1. Place the child protection seat fastening strap over the seat back. For vehicles with adjustable headrest, put the fixing belt under the headrest and between the two pillars of the headrest; Otherwise, put the fixing strap on the top of the seat back. 2. Connect the fixing hook to a suitable child protection seat tether anchor, and tighten the tether to secure the seat. Secure the child protection seat with hip/shoulder belts: 1. Put the child protection seat on the back seat and pass the crotch/shoulder belt around or through the child protection seat according to the child protection seat manufacturer's instructions. Make sure that the seat belt is not kinked. 2. Clip the crotch/shoulder belt buckle into the buckle until a unique click is heard. 3. When the shoulder seat belt retracts into the seat belt retractor, press down the child protection seat and tighten the seat belt as much as possible to completely eliminate the slack. 4. Push and pull the child protection seat to ensure that the seat belt firmly fixes the child protection seat.