Q: Q: How do the seat belt pretensioners work?

asked by on

How do the seat belt pretensioners work?

Your seat belts are more than just pieces of fabric that buckle to hold you in place. The front seat belts are equipped with pretensioners that are designed to help enhance your safety during an accident.

Essentially, the pretensioners are designed to pull the shoulder belt backwards during an impact (after the belt is allowed to extend a little bit to accommodate the forces acting on your body). The pretensioner will retract the belt to help hold you in the seat and prevent injuries.

Tip

The pretensioners will not activate in all types of accidents. The car’s computer determines when or if they’re necessary.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: How do the seat belt pretensioners work?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do I open, lock and unlock the glove box?

You can store important items in your glove box to keep them safe by locking it. You just press open the latch on the glove box to access items inside. Use the mechanical key or the master key and insert...

Q: Car won't start. Alarm keeps going off (aftermarket alarm)

Hello. From what you describe, it would appear that your vehicle has experienced some sort of electrical issues. It may be possible that the alarm system has been set off or has perhaps malfunctioned, and as a result is cutting...

Q: Small leak in emissions

You will need to have an EVAP smoke test performed to locate where the system is leaking before replacing anything. It could be a stuck valve, broken hose, or a gas cap that is not sealing the system. Without knowing...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...