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

asked by on

How do the seat belt pretensioners work?

The job of the pretensioner is to allow the seat belt to work correctly when restraining someone. The pretensioner retracts to keep the person in place if an accident should happen. The emergency locking retractor or ELR works when the car makes a sudden stop or if it impacts with a solid object. An automatic locking retractor or ALR holds the person if one position once the belt has been extended fully and retracted.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
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: My horn won't work

The horn being inoperative could be from either the steering wheel clock spring, or the horn assembly. Both have been known to cause the problem you described. The Check Engine Light could be on for a sensor problem, or a...

Q: What does the “Brake fluid level low” warning in the message center mean?

Your car is equipped with some pretty advanced equipment in order to monitor the various systems needed for safe driving. One of those sensors is designed to check the level of fluid in the master cylinder reservoir. If the fluid...

Q: Car won’t start, it cranks the first time I try and after that just rapid clicking, also shuts down a car trying to jumpstart it

Claimed by John Hege

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...