See also:

SRS airbag instructions for Canadian owners (in French)
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Type C: function achieved by using DCM
Of the functions included with Lexus Enform with Safety Connect, Safety Connect can be achieved by using DCM. For details, refer to “Owner’s Manual”. ...

Radar sensor
The radar sensor detects vehicles or other obstacles on or near the road ahead and determines whether a collision is imminent based on the position, speed, and heading of the obstacles. ...