On certain passenger vehicles, during the production process, the threads in the nut used to secure the seat belt buckle in a limited number of second row seats may be missing. The absence of the screw threads results in an incomplete connection of the buckle to the seat.
Dealers will inspect to see if the nut is missing and replace the seat if necessary free of charge. The recall began on May 3, 2006. Owners may contact Mercedes-Benz at 1-800-367-6372.