The problem can prevent the seats from properly securing an infant during a crash.
Britax will begin notifying owners and sending repair kits next month.
If you have a Britax Chaperone infant car seat and the harness adjuster has detached from the seat, you should stop using it immediately.
For more information, visit http://news.consumerreports.org and http://www.britaxusa.com/uploads/advisory/notice/24-129.pdf.