Skip the auto shop - Our mechanics make house calls

Q: What are the automatic seat belt tensioners?

asked by on

What are the automatic seat belt tensioners?

A: Your car’s seat belts are much more advance...

Your car’s seat belts are much more advanced than what was available even a few years ago. They’re much more than just belts designed to be tightened on buckling. In fact, they work with your air bag system to enhance your safety. One of the key means of doing this is the automatic seat belt tensioner.

Really, the tensioner is exactly what it sounds like. When the car’s computer senses certain types of impacts, the tensioner is activated. This slightly retracts the belt and then briefly locks it into place to better hold you in the seat and protect you against injury from the impact.

Tips

  • Your seat belt tensioners can only be used one time – after deploying, they’ll need to be replaced.

  • Tensioners don’t work in all situations. The impact has to meet certain criteria for them to be activated.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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 use the power lock doors?

The power lock doors allow you to lock and unlock the doors from inside the vehicle. To unlock all of the doors, press the unlock button, which looks like an opened padlock. To lock all of the doors, press the...

Q: My car jerks when putting it into drive and sometimes has to be revved up high before going into gear

The issue you're describing is typically an indicator of an internal transmission component failure or loss of hydraulic pressure inside the transmission. The change of the motor and transmission mounts probably did not hurt the Honda's ability to accelerate correctly....

Q: paired phone stopped working

Hi there. If you're having problems with the bluetooth connecting on your Honda Civic, your best option is to contact the local Honda dealership service department to see if they can assist you in resetting the system or determining if...

Related articles

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...