What is a seat belt pretensioners?
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.
What triggers a seat belt pretensioner?
The pretensioner mechanism uses an explosive charge to drive a concealed piston when sensors detect the signature abrupt deceleration of an accident. The piston, in turn, rapidly drives the spool around which the fabric strap of a seatbelt is wrapped.
What happens to seat belts when airbags deploy?
Seatbelts are designed to protect, but as one industry spokesman put it, “They are designed to work just once.” In a crash, seatbelts stretch as they restrain you. If the air bags were also deployed, the chances are the seatbelt’s pretensioner which reels in slack was also activated.
Can a seat belt pretensioner be repaired?
The seat belt pretensioner can be reset to factory settings and replaced into the vehicle. Unlike most other seat belt repair shops, this company can repair single-stage, dual-stage, and even triple-stage seat belt pretensioners!
Why is it important to wear a safety belt or seatbelt even if your vehicle has an airbag?
Seat belts and airbags are interrelated: an airbag without a seat belt can cause severe injury and even death. So, you have to use a seat belt to avoid serious injury. Moreover, according to seat belt legislation, wearing seat belts at all times is mandatory.
What is a seat belt retractor pretensioner?
Seat Belt Pretensioners Types: A pretensioner is a device that is connected to the safety belt buckle, safety belt retractor or/and and outboard lower safety belt anchor assembly. The pretesioner tightens the seat belt during certain crashes. For some vehicles pretensioners will deploy if the safety belt is buckled.
How much does it cost to replace a seat belt sensor?
The replacement cost of a seat belt pretensioner is around $150 to $200. The cost of the parts is about $50 to $100 while the cost of the labor is about $100 to $125. You may be able to reduce the labor if you can find a cheap enough mechanic in your area or simply enlist the help of a buddy that likes to work on cars.