The Recaro company is recalling more than 39,000 child safety seats because they can let a child's head move too far in a crash. The recall covers ProSport model 385 seats made and sold between 2010 and early 2014. The problem happens when the seats are installed with the lower latch anchors and without the top tether. Recaro will notify owners and provide a set of new instructions telling owners not to use the lower latch system with a child weighing 40 or more pounds. The problem was found in testing and not the result of any child injuries.