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Area Of Impact

The airbag(s) will only activate during a frontal impact and then only when the collision is within a 60° arc, equidistant to the vehicle center line.

The front airbag sensors are spring loaded inertia type switches. The weighted roller will move forward, in the event of a frontal impact, closing the contacts of the sensor.

Fig 1: Identifying Area Of Impact For Activation

Courtesy of BMW OF NORTH AMERICA, INC.