Cars built after September 2002 have the Universal Anchorage System (UAS/Latch). If your car is older than September 2002, you will use the seat belt.
Check the Car Owner’s Manual to see how to use the UAS/Latch system in your car. Many cars have the UAS/Latch anchors in the rear seats on the passenger side and driver side. In many cars the UAS/Latch anchors are not in the center seating positions. If you want to use the UAS/Latch system and the center seat in your car, check your car owner’s manual.
The car seat will face the front of the car and be upright.
The UAS/Latch belt will be routed through the forward facing belt path. Check your instructions.
Connect UAS/Latch connectors on the car seat to the UAS/Latch anchors in the car.
Push down on the car seat. You can also use your knee to push the car seat into the car. Pull the UAS/Latch belt tight.
Attach the tether strap to the tether bolt. Pull the tether strap tight.
Check to see that the car seat is tight at the spot that it is anchored to the car. Place your hands on each side of car seat, and try to move the car seat side to side and front to back. The car seat should not move more than one inch (2.5 cm) side to side or front to back. If the car seat moves too much, push down on the car seat harder and pull the UAS/Latch belt tighter and the tether strap tighter.
If you are using the UAS/Latch system to install your car seat – do not also use the regular seat belt.
If your Booster seat instructions state to use the UAS/Latch system for the booster seat, you will also need to use a lap and shoulder seat belt to keep your child in their booster seat.