Hyundai Elantra: SRSCM / Front Impact Sensor (FIS)

Hyundai Elantra (CN7) 2021-2024 Service Manual / Restraint / SRSCM / Front Impact Sensor (FIS)

Description and operation

Description

The front impact sensor (FIS) is installed in the Front End Module (FEM). They are remote sensors that detect acceleration due to a collision at its mounting location.

The primary purpose of the Front Impact Sensor (FIS) is to provide an indication of a collision. The Front Impact Sensor (FIS) sends acceleration data to the SRSCM.

Components and components location

Components

1. Passenger front impact sensor (FIS)

2. Driver front impact sensor (FIS)

Repair procedures

Removal

Disconnect the negative (-) battery terminal.

•	Disconnect the battery negative cable, and wait for at least three minutes before beginning work.

2.	Disconnect the front impact sensor connector (B) and then remove the front impact sensor (A) after loosening the mounting bolt. [LH] [RH]

Installation

Check if the battery (-) cable is disconnected.

•	Disconnect the battery negative cable, and wait for at least three minutes before beginning work.

2.	Install a new front impact sensor and connect the front impact sensor connector.

Tighten the front impact sensor mounting bolt.

Tightening torque :

7.8 - 10.8 N.m (0.8 - 1.0 kgf.m, 6.5 - 5.8 lb-ft)

•	If tightening by excessive force beyond the specified tightening torque, the forward collision detecting sensor may be damaged. Therefore, make sure to do work in accordance with the specified tightening torque.

4.	Reconnect the battery negative (-) terminal.

After installing the front impact sensor, confirm proper system operation.

•	Turn the ignition switch ON; the SRS indicator light should be turned on for about 6 seconds and then go off.

SRS Control Module (SRSCM)

Description and operation Description• Supplemental Restraint System Control Module (SRSCM) determines whether and when to deploy air bag module, seat belt pretensioner (BPT)...

Description and operation Description• Side Impact Sensors (SIS), each installed on the center part of the right and left front door modules and the right and left center pillars, detects side impact during collision...

Other information:

Hyundai Elantra (CN7) 2021-2024 Owner's Manual: Battery saver function

The purpose of this feature is to help prevent the battery from being discharged. The system automatically turns off the parking lamp when the driver turns the vehicle off and opens the driver-side door. With this feature, the parking lamps will turn off automatically if the driver parks on the side of road at night...

Hyundai Elantra (CN7) 2021-2024 Owner's Manual: Air bag inflation conditions

Front air bags Front air bags are designed to inflate in a frontal collision depending on the severity of impact of the front collision. Side and curtain air bags Side and curtain air bags are designed to inflate when an impact is detected by side collision sensors depending on the severity of impact resulting from a side impact collision...

Tilting the sunroof

Tilt the sunroof open:

Push the sunroof control lever upward until the sunroof moves to the desired position.

To close the sunroof:

Press the sunroof lever forward until the sunroof moves to the desired position.