Reply to 4 Runner Airbags did not deploy

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Reply to "4 Runner Airbags did not deploy"

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[quote=Anonymous][quote=Anonymous][quote=Anonymous]

You do not have to "hit the sensors perfectly" for the airbag to deploy. The sensors are measuring longitudinal and lateral acceleration and the airbags deploy based on a threshold predicted deceleration (in other words, the sensor is trying to predict how severe the crash will be based on the initial crush of the vehicle structure). If OP hit the side of a smaller car, the predicted severity for the 4runner might have been lower than the threshold severity. That said, if you really think the airbags didn't deploy and should have, the right place to file the complaint is with NHTSA: https://www.nhtsa.gov/report-a-safety-problem#index
[/quote]

Right, but how are we supposed to know whether airbags should have deployed but didn't?[/quote]

One clue is that the OP said no injuries except soreness. That is a pretty good indication that an airbag wasn't needed to prevent serious injuries.

Airbags add energy into the crash. That extra energy is needed in serious crashes to help prevent serious injuries but you don't really want airbags to deploy if they aren't needed. Airbag deployment algorithms are a lot more sophisticated than they used to be to help prevent unnecessary deployments (which can lead to issues too). [/quote]

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