Hyundai Santa Fe (TM): Restraint / Seat Belt Pretensioner

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Restraint / Seat Belt Pretensioner

Seat Belt Pretensioner (BPT). Description and operation

Description
The Seat Belt Pretensioners (BPT) are installed inside center pillar (LH & RH). When a vehicle crashes with a certain degree of frontal impact, the pretensioner seat belt helps to reduce the severity of injury to the front seat occupants by retracting the seat belt webbing. This prevents the front occupants from thrusting forward and hitting the steering wheel or the instrument panel when the vehicle crashes.
  
•
Never attempt to measure the circuit resistance of the Seat Belt Pretensioner (BPT) even if you are using a specified tester. If the circuit resistance is measured with a tester, the pretensioner will be ignited accidentally. This will result in serious personal injury.

Seat Belt Pretensioner (BPT). Components and components location

Components

1. Front Seat Belt Pretensioner (BPT)

Seat Belt Pretensioner (BPT). Repair procedures

Removal
1.
Disconnect the battery negative cable, and wait for at least three minutes before beginning work.
2.
Remove the front anchor seat belt (A).
3.
Remove the center pillar lower trim.
(Refer to Body - "Center Pillar Trim")
4.
Remove the center pillar upper trim.
(Refer to Body - "Center Pillar Trim")
5.
After loosening the mounting bolt, then remove the front seat belt lower anchor (A).
6.
Disconnect the seat belt pretensioner connector (A) and then remove the seat belt pretensioner.
7.
Remove the seat belt pretensioner (A) after loosening the mouning bolts.
Installation
1.
Disconnect the battery negative cable and wait for at least three minutes.
2.
Install the seat belt pretensioner.
Tightening torque
Bolt (A) : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)
Bolt (B) : 39.2 - 53.9 N.m (4.0 - 5.5 kgf.m, 28.9 - 39.8 lb-ft)

3.
Install the front seat belt upper anchor bolt.
Tightening torque :
39.2 - 53.9 N.m (4.0 - 5.5 kgf.m, 28.9 - 39.8 lb-ft)

4.
Install the center pillar trim.
(Refer to Body - "Center Fillar Trim")
5.
Install the door scuff trim.
(Refer to Body - "Door Scuff Trim")
6.
Reconnect the battery negative cable.
7.
After installing the seat belt pretensioner, confirm proper system operation:
•
Turn the ignition switch ON; the SRS indicator light should be turned on for about six seconds and then go off.

Emergency Fastening Device (EFD). Description and operation

Description
The Emergency Fastening Device (EFD) operates at the same time with the Seat Belt Pretensioner when it satisifies the deployment condition after a collision. It is an auxiliary equipment to prevent a driver and passenger from breaking away by pulling the seat belt toward the anchor side after a collision. It is located near the anchor on the driver and passenger seat and is supported by two cables.
  
•
Never measure the resistance of the anchor pretensioner directly, the current of the measuring device may cause unexpected airbag deploy.

Emergency Fastening Device (EFD). Components and components location

Components

1. Emergency Fastening Device (EFD) System

Emergency Fastening Device (EFD). Repair procedures

Removal
1.
Disconnect the battery negative terminal, and wait for at least three minutes before beginning to work.
2.
Remove the anchor seat belt (A).
3.
Remove the front seat.
(Refer to Body - "Front Seat")
4.
Remove the door scuff trim trim.
(Refer to Body - "Door Scuff Trim")
5.
Remove the center pillar lower trim.
(Refer to Body - "Center Pillar Trim")
6.
Disconnect the connector (A) and then remove the anchor pretensioner by loosening the mounting bolt.
Installation
1.
Install anchor pretensioner and reconnect the connector (A).
Tightening torque :
39.2 - 53.9 N.m (4.0 - 5.5 kgf.m, 28.9 - 39.8 lb-ft)

2.
Remove the front seat.
(Refer to Body - "Front Seat")
3.
Install the center pillar lower trim.
(Refer to Body - "Center Pillar Trim")
4.
Install the door scuff trim trim.
(Refer to Body - "Door Scuff Trim")
5.
Reconnect the battery negative cable.
After installing the anchor pretensioner, confirm proper system operation:
•
Turn the ignition switch ON; the SRS indicator light should be turned on for about six seconds and then go off.

    Driver Airbag (DAB) Module and Clock Spring. Description and operation Description The Driver Airbag (DAB) is installed in the steering wheel and electrically connected to SRSCM via the clock spring.

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