Due to the lower anchor weight limits, you MUST install forward-facing Diono car seats with the seat belt AND tether for kids weighing 40 pounds and more… instead of using the lower LATCH anchors and tether. If your child is under 40 pounds and forward-facing you can use the seat belt AND tether OR the lower anchors AND tether. Always use the tether on EVERY forward-facing car seat.
Make sure the shoulder straps come from at or above your child’s shoulders. If your Diono has a moveable head rest (RXT, Rainier) and you have an older, taller child in the seat make sure you have moved the head rest all the way up to reveal the highest shoulder strap slot, as this is blocked when the head rest is not up all the way.
If your child is under 40 pounds and using a Diono seat forward-facing, make sure you have added the SAFE STOP. Make sure to remove the SAFE STOP when the child reaches 40 pounds.