Porsche has notified the NHTSA of a defect in certain model year 2010 Panamera S, 4S and Turbo 4-door Sedans.  They stated that if the front seats are adjusted towards an extreme position, resulting in unfavorable tolerance of the mating components, it is possible that the function of the locking mechanism of the seat belt mount could detach from the anchoring system when the seat belt is fastened or opened.

In the event of a crash, the seat belt may not provide adequate protection for the seat occupant, which may increase the risk of injury or death.  Dealers will have an additional locking element installed on the seat belt anchoring system for both front seats.  This service will be preformed free of charge.   The manufacturer has not yet provided an owner notification schedule.  Owners may contact Porsche at 1-800-545-8039.