Hyundai Elantra AD Quiz
Restraints

Seat Belt Pretensioner (BPT) Description and Operation

In this manual: Restraints
General Information — 9Engine Mechanical System — 84Engine Electrical System — 60Emission Control System — 24Engine Control System/Fuel System — 90Automatic Transmission — 92Drive Shaft and Axle — 20Suspension System — 31Steering — 20Restraints — 50Brake System — 63Body (Interior and Exterior) — 214Body Electrical System — 221Heating, Ventilation, and Air Conditioning — 71
~1min read

Description

Seat belt pretensioners (BPT) are installed inside the center pillars (left and right). In a vehicle collision of a certain severity involving a frontal impact, the seat belt pretensioner helps reduce the injury force on front seat occupants by retracting the seat belt webbing. This prevents front occupants from being thrown forward and striking the steering wheel or instrument panel when the vehicle decelerates. (The seat belt pretensioner may also deploy in a side collision if the vehicle is equipped with side airbags or curtain airbags.)
  • Never attempt to measure the resistance of the seat belt pretensioner (BPT) circuit, even when using the specified tester. If the circuit resistance is measured with a tester, the pretensioner may accidentally ignite. This may result in serious injury.

Test yourself

A quick Hyundai Elantra AD quiz: every answer comes with an explanation and a link to the manual page.