What is the seat belt pretensioner?
A pretensioner is designed to retract some of the webbing of a seatbelt the instant a collision occurs, tightening the seatbelt to restrain occupants quickly and reducing the amount they are thrown forward in a moderate or severe frontal crash. Load limiters help protect occupants from seatbelt-inflicted injury.
How does the pretensioner in a seatbelt work?
The Pretensioner. When the gas is ignited, the pressure pushes the piston up to rotate the retractor. The idea of a pretensioner is to tighten up any slack in the belt webbing in the event of a crash. Whereas the conventional locking mechanism in a retractor keeps the belt from extending any farther, the pretensioner actually pulls in on the belt.
What to look for in a seat belt check?
• Webbing– Check the webbing for any nicks, cuts, holes and fraying as this shows wear and could affect your seat belt effectiveness. •Buckle– look for any signs of damage. Fasten the seat belt and pull to check it’s secure. Check the stalk for any loose connection to the vehicle.
Where does the seat belt adjuster need to be?
The adjuster should be positioned above your occupant’s shoulder height to ensure the best fit and should be adjusted for each passenger for maximum safety. For occupants over 135cm (4’5”) in height, the slider must be at the top of the seat.
Can a seatbelt pretensioner Save Your Life in an accident?
With a seatbelt pretensioner, of course. Like a valiant but tragic hero, the seatbelt pretensioner sacrifices its life in an accident, in order to save yours. Consider yourself fortunate if your vehicle’s seatbelt pretensioners never have to see action in their intended purpose.
How does the driver seat belt pretensioner deployment loop work?
The driver seat belt pretensioner deployment loop consists of a seat belt pretensioner – LF and the seat belt pretensioner – LF high and low circuits. A shorting bar used within the seat belt pretensioner connector shorts together both the seat belt pretensioner high and low circuits when the connector is disconnected.
How is the seat belt pretensioner shorting bar used?
A shorting bar used within the seat belt pretensioner connector shorts together both the seat belt pretensioner high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the pretensioner during servicing.
How much does a seat belt deployment loop cost?
Most auto repair shops charge between $75 and $150 per hour. The driver seat belt pretensioner deployment loop consists of a seat belt pretensioner – LF and the seat belt pretensioner – LF high and low circuits.