Air Bag Basics
- Crash sensors collect the data necessary to make decisions about air bag deployment.
- Crash sensors measure how quickly a vehicle slows down in a frontal crash or accelerates to the side in a side-impact crash. Some vehicles are equipped with a sensing system designed to detect the onset of a rollover crash.
- Frontal crash sensors may be located in the front of the vehicle near the engine, in the passenger compartment, or sometimes in the electronic control unit (ECU).
- Side-impact crash sensors may be located in the ECU, the door, the doorsill, or between the front and rear doors.
- Rollover crash sensors may be located in the ECU or at the vehicle's center of gravity.
- Severe or panic braking alone cannot cause an air bag to deploy; air bags deploy only in crashes.
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