Hyundai Elantra: Seat Belt Pretensioner / Seat Belt Pretensioner (BPT) Description and Operation

Hyundai Elantra AD (2016-2020) Service 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.
(Seat belt pretensioner may be activated in side impact collisions if the vehicle has side airbag or curtain airbag.)
   
Never attempt to measure the circuit resistance of the Seat Belt Pretensioner (BPT) even if you are using the 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. 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. Separate the front seat belt (A) from the emergency fastening device. 3. R ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Blind Spot Detection Unit Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the rear bumper. (Refer to Body - "Rear Bumper") 3. Remove the BSD unit (A) after loosening the mounting nuts.     • Take care not to separate the bracket from rear bumper when removing the BSD se ...

Hyundai Elantra AD (2016-2020) Service Manual: Heated Oxygen Sensor (HO2S) Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the HO2S connector. 3. Measure resistance between the HO2S terminals 2 and 5 [B1/S1]. Measure resistance between the HO2S terminals 3 and 4 [B1/S2]. 4. Check that the resistance is within the specification. Specification : ...

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