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Air bag deployment

To answer your question why didn’t your air bags deploy when you hit the street sign. It's because it maybe one or two possible reasons. The first reason is that your vehicle speed was too slow to allow the air bags to deploy at the time of impact. The speed sensors are always sending the real time speed information to the computer and at lower speeds the bags will not deploy. The second reason is the collision sensors are place at strategic point around front and sides of the vehicle. Now when you hit a smaller object the impact wave did not register the sensors to deploy. I hope this can help you better understand some of the basic operations of the Air Bag System on TB.
 
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