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Do Grille Guards Affect Airbag Switches?


LexKid630
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they do a great job for low speed impacts under 30 mph

over that they also do a good job but that is when you start to get hurt more than the truck since the vehicle is made to crumple under stress but instead sends the velocity changes to the passagners instead of it being absorbed

If you can get a custom mount that breaks under more than 80 punds of force then it will protect the vehicle until it is needed to protect you instead

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they do a great job for low speed impacts under 30 mph

over that they also do a good job but that is when you start to get hurt more than the truck since the vehicle is made to crumple under stress but instead sends the velocity changes to the passagners instead of it being absorbed

If you can get a custom mount that breaks under more than 80 punds of force then it will protect the vehicle until it is needed to protect you instead

thast a good point sk. a breakable mount. i never woudl have thought of that.

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I believe most sensors (at least the older ones) are triggered at speeds of 12 mph and above. The newer sensors "read" the severity of the impact and adjust the air bag deployment force.

Will the grill guard affect the force read by the sensor? Yes.

Will it really make that much of a difference? I don't believe so because the deployment is programmed for such a low level anyway.

Just my 2 cents.

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Here is a very simple way to understand the sensor

it is an instant switch.

If their is no contact by having the sensor crushed it will not activate. correct?

So if you have a guard then it will guard the sensor.

I wouldn;t think it would neeed any more explanation.

Go to the dealer and see if they sell any OEM toyota/lexus grille guards.

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Here is a very simple way to understand the sensor

it is an instant switch.

If their is no contact by having the sensor crushed it will not activate. correct?

So if you have a guard then it will guard the sensor.

I wouldn;t think it would neeed any more explanation.

Go to the dealer and see if they sell any OEM toyota/lexus grille guards.

My airbag did not deploy when I smacked into a deer at 50mph. well i was actually slamming on my breaks so I could have maybe hit the deer at a slower speed. But my airbag did not deploy, it ripped my bumper in half where the grille is installed and pushed it into the radiator. Plus the insurance paid for replacing the grille because it prevented the airbag from deploying. (i need to use a thesaurus, how many times did i use the word deploy? :geek: )

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The reason that your airbag did not go off when you hit the deer is the force of the collision.

The airbag sensors do not work by getting crushed. They work based on the rate of deceleration. Typically (at least on the sensors in the 90's) you will have a metallic ball bearing contained inside the sensor. When the deceleration rate is large enough, the ball bearing moves forward in the sensor package and makes contact with two metal wires. I believe everything used to be gold plated to reduce or eliminate corrosion. When the contact is made, the airbag is signaled to deploy. There used to be a cut open sensor picture on the web, but I cannot find it now.

Remember that force = mass X acceleration.

The heavier the object is that you hit and the faster you are going will make your airbag more likely to deploy.

Tom

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I found what I was looking for.

I also found some other interesting info. There are different types of airbag sensors now that we have side airbags and all the new gadgets.

I'm not sure which one our RX has. I'll have to go look, but here is the link to see a cutaway version of the sensor I described above.

Tom

Airbag sensor link

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Get your wheel modified with carbon fibre or wood inlay instead

Or else all of your airbags will go dead.

Momo made an airbag wheel a few years ago but for legal problems stopped selling it especially since now every system, is slightly different.

Besides you SRS system is an accident data logger so it may be illegal to disarm airbags as well as the system the cops can use to decipher an accident

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