Front Impact Sensor (FIS)
Description and Operation
Description
The Frontal Impact Sensor (FIS) is installed in the Front End Module (FEM). They are remote sensors that detect acceleration caused by a collision at their installation location. The main purpose of the Frontal Impact Sensor (FIS) is to determine collision. The FIS sends acceleration data to the SRSCM.
Components and Component Location
Component Location

| 1. Front Impact Sensor (FIS) |
Repair Procedures
Removal
Disconnect the negative battery cable.
Remove the Frontal Impact Sensor (A) by disconnecting the connector (B) and loosening the bolt.
Tightening torque: 8.8–10.8 N·m
[LH]

[RH]

Installation
Install a new front impact sensor.
Tighten the front impact sensor mounting bolt.
Tightening torque: 8.8–10.8 N·m
Connect the front impact sensor connector.
Install the radiator assembly.
Connect the negative battery cable.
After installing the Frontal Impact Sensor, verify that the system operates correctly:
Turn the ignition ON; the SRS indicator should illuminate for about six seconds, then go off.
Test yourself
A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.