Hyundai Sonata LF: Airbag Module / Side Airbag (SAB) Module Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Restraint / Airbag Module / Side Airbag (SAB) Module Repair procedures

Removal

The side airbag cannot be disassembled from the seat back assembly, so replace the seat back assembly when replacing the side airbag.

1.	Disconnect the battery negative cable and wait for at least 3 minutes before beginning work.

2.	Remove the front seat assembly. (Refer to Body - "Front Seat Assembly")

3.	Remove the seat back assembly. (Refer to Body - "Front Seat Back Assembly")

4.	Loosen the SAB mounting nuts (A) and remove the SAB module.

Installation

Be sure to install the harness wires so they will not pinch or interfere with other parts.

•	Do not open the lid of the side airbag cover.

•	Make sure that the airbag assembly cover is installed properly. Improper installation may prevent the proper deployment.

1.	Remove the ignition key from the vehicle.

2.	Disconnect the battery negative cable and wait for at least three minutes.

3.	Install the new seat back assembly. (Refer to Body - "Front Seat Back Assembly")

4.	Install the front seat assembly. (Refer to Body - "Front Seat Assembly")

5.	Recline and slide the front seat forward fully, make sure the harness wires are not pinched of interfere with other parts.

6.	Reconnect the battery negative cable.

After installing the side airbag (SAB), confirm proper system operation :

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

Side Airbag (SAB) Module Components and Components Location

C..

Curtain Airbag (CAB) Module Description and Operation

Description Curtain airbags are installed inside the headliner (LH and RH) and protect the driver and passenger from danger when side crash occurs...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting

Trouble Symptom Charts Trouble Symptom 1 Trouble Symptom 2 Trouble symptomProbable causeRemedyThe set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of ECMCheck input and output signals at ECM Trouble Symptom 3 Trouble symptomProbable causeRemedyThe CC system is not canceled when the brake pedal is depressedDamaged or disconnected wiring of the brake pedal switchRepair the harness or replace the brake pedal switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 4 Trouble symptomProbable causeRemedyThe CC system is not canceled when the shift lever is moved to the "N" position (It is canceled, however, when the brake pedal is depressed)Damaged or disconnected wiring of inhibitor switch input circuitRepair the harness or repair or replace the inhibitor switchImproper adjustment of inhibitor switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 5 Trouble symptomProbable causeRemedyCannot decelerate (coast) by using the "SET/–" switchTemporary damaged or disconnected wiring of "SET/–" switch input circuitRepair the harness or replace the "SET/–" switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 6 Trouble symptomProbable causeRemedyCannot accelerate or resume speed by using the "RES/+" switchDamaged or disconnected wiring, or short circuit, or "RES/+" switch input circuitRepair the harness or replace the "RES/+" switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 7 Trouble symptomProbable causeRemedyCC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speedMalfunction of the vehicle-speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 8 Trouble symptomProbable causeRemedyThe cruise main switch indicator lamp does not illuminate (But CC system is normal)Damaged or disconnected bulb of cruise main switch indicator lampRepair the harness or replace the part...

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