Kia has announced a recall for certain 2006-2008 Kia Rio vehicles built between February 2005 to December 2007 for a problem with the passenger side airbag sensor. The front passenger seat occupant sensor could crack leaving the occupant classification system (OCS) inoperative. The system will not be able to detect the size of the passenger and the air bag may not deploy correctly. Kia will start notifying owners starting in July, and will correct the problem by replacing the OCS seat sensor mat. For more information about the problem, contact the Kia consumer assistance center at 1-800-333-4542.