NHTSA
Injury Risk when Seat used with Lap Belt/FMVSS 213
If the seat is installed with only the lap belt, the child has an increased risk of a chest injury in the event of a crash.
Diono will notify owners, and provide a free remedy kit with an updated instruction manual, an energy absorbing pad, as well as a new chest clip, free of charge. The recall began on November 22, 2017. Owners may contact Diono customer service at 1-855-215-4951.