since i have a brush guard on the front of my truck that is attatched to my frame will my airbags go off??

 

This is just a guess....but if whatever or whoever makes hard enough contact to break the brush guard, then the airbag sensor might deploy, and they may inflate. I am not sure what the minimum speed is. I think it may be 15-20 mph, but again, just a guess.

By the way, that is a nice truck and I hope that never happens to you.

 

I believe the air bags take info from a number of different points before it decides to deploy the bags......

...not just from the front bumper.

calculates speed, bumper force, side force, roll over, seat stress, etc.

no one thing controls them from what i read.

 

I had a 2000 Jeep Grand Cherokee with a brush guard and I rear ended a Toyota at about 25mph. The airbags did not deploy! The brush guard saved the front of my truck though, and the Toyota was badly damaged and my truck had just about no damage at all. The brush guard took the brunt of the force and spared the front end.
I must say I was happy about the lack of damage but was very suprised the airbags did not deploy. So maybe the brush guards do affect airbag deloyment in a lower speed crash.

 

Depending on the severity of the wreck I would assume the air bags would eventually go off. The brush guard might prevent air bag deployment at low speed though. That would be an interesting subject to research and gather statistics on.

 

The brush guard should not interfere with airbag deployment. The Air bag sensor mounted at the front of the vehicle does not need to receive direct impact to deploy. I was under the impression that it was based on indirect force pressure from a motion sensor.

When your car is involved in a frontal collision with an object while traveling over twelve miles per hour, a motion sensor sends an electrical shock to a small capsule of sodium azide powder, which instantly turns into inert nitrogen gas.


http://www.aorc.org/faq.asp

An air bag is only as good as its control system. On most vehicles, the bag is triggered electrically. Located in the front of most domestic vehicles are one to three "crash" sensors. These are positioned well forward in the crush zones so they will react almost instantly to the sudden deceleration that results from a frontal impact (anything up to about 30 degrees either side of center). Many European vehicles use only a single electronic crash sensor located inside the passenger compartment. The same setup is now being used in many newer domestic vehicles.

There are several different types of crash sensors. A commonly used sensor is the electromechanical "gas dampened ball and tube" design. The sensor is nothing more than a small tube with a switch at one end and a gold plated steel ball at the other, held in place by a small magnet. When the sensor receives a hard enough jolt to knock the ball loose from the magnet, the ball rolls down the tube, hits the switch and closes the circuit. The tube is slanted upward so the ball should return to its original position after an impact.

Another common crash sensor is the "Rolamite" design by TRW. Inside is a small metal roller that rolls forward under sudden deceleration and trips a switch.

http://www.aa1car.com/library/airbag01.htm

 

most brush guards, push bars, grille guards or whatever have a disclaimer that your airbag may not deploy. this is to cover their ***.

 

Wouldn't you think obviously since the brush gaurd if attached to the frame, that if he did get hit at a good speed, it might not do to much damage to the truck itself, but wouldn't the frame get most of the beating and possibly bend the frame frist if anything?? Bassically even if someone hits him or he hits something that the frame will take all the beating??

 

I think the air bag would be less likely to deploy with the brush guard in place because it would absorb part of the force of the impact. That would in effect be the same as having the wreck at a slower speed (maybe below the deployment point of the airbag). That is a good thing!

 

It's all about deceleration guys. You can have a mad-max style I-beam made brush/grill/bull guard thingy and your airbags will STILL DEPLOY if deemed nessesary. Got nuttin' to do with your bumpers/guards/whatever..

 

I hit a car doing 40 mph, initially only had about 2 seconds to stand on my brake before impact, the air bag did not go off.
I am guessing it didn't go off because i hit a Camry and sent him flying then i continued forward a couple more feet before my front fender (bent into the front tire) stopped my truck.
If i would have hit a brick fence and came to an abrupt stop, then i would assume the air bag would have deployed.

 

The car I hit in my Jeep was a Camry also. Forget about brush guards, I think its Camry drivers we should be worried about!

 

maybe we should get one of those ink stamps with a pic of a Camry on it and stamp them on the side of our trucks.
Like the fighters used to do in WWII.

 

I'd hope the mounting hardware would shear/fail before it destroyed the frame.

 

I know a guy with a HUGE brush guard. He nailed a deer at highway speeds... He said he hit the brake for a split second, then just coasted into the deer.. Said impact was at about 65....

I seen his guard after it happened and only difference in it was a little patch of fur stuck to it. Saved his entire front end..... This one was made of 2-1/4" tubing... REAL tough!

EDIT: He also drove an F350 though.... Tough Frame!