Side Impact Sensor (Sis): Description
WARNING: This page is about a different car, the 2008 Kia Optima and 2008 Kia Magentis. However, it is still accessible from the selected car via links, so may be relevant.
The Side Impact Sensor (SIS) system consists of two front SIS which are installed in the center pillar (LH and RH) and two rear SIS which are installed in the rear pillar (LH and RH). They are remote sensors that detect acceleration due to collision at their mounting locations. The primary purpose of the Side Impact Sensor (SIS) is to provide an indication of a collision. The Side Impact Sensor (SIS) sends acceleration data to the SRSCM.