Occupant Classification System

What NHTSA is examining

The subject vehicle population is MY 2007-2009 Kia Spectra vehicles.Consumers report that the SRS (air bag) warning light is illuminated in their vehicle.The focus of the investigation was the failure of the front seat passenger Occupant Classification System (OCS) sensor mat.This sensor mat is embedded in the front passenger seat cushion and is intended to detect child seats and small statured occupants who could be harmed by deployment of the passenger frontal air bag.The OCS may develop a failure due to an open circuit in the sensor mat caused by the mat cracking during use.An open circuit in the OCS sensor mat is detected as a fault in the system by the air bag diagnostic. A trouble code will then be stored in the air bag control unit and the air bag warning light will be illuminated.If this fault is detected, the OCS will not suppress the front passenger air bag and in a crash of sufficient severity the front passenger air bag will deploy regardless of the nature or size of the child seat or occupant in the front passenger seat.The report counts shown above include only those reports that specifically address the issue covered by this investigation, failure of the OCS sensor mat.Reports alleging only that the ?air bag light is on with no cause stated, or where no cause was otherwise identified, were excluded as the air bag light could be illuminated for system faults other than an OCS malfunction.Kia's assessment was that the cracking was caused by owner abuse.The…

Vehicles under investigation