On certain vehicles, the center rear seating position seatbelt, when used in automatic locking retractor mode, may not allow the proper installation of a child restraint system or booster seat and could revert to emergency locking mode while in use. Although the seatbelt would still lock in the event of a crash, the belt could loosen during normal operation and cause the child restraint or booster seat to shift or become improperly positioned, increasing the risk of injury. Correction: Subaru will send owners a locking clip to be used to properly secure a child restraint system or booster seat, and an owner's manual supplement with instructions on its use. Also, dealers will replace the center seatbelt retractor upon request.