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Home >> BMW >> 2013 >> M3 2D Convertible, Standard Trans >> Repair and Diagnosis >> General Information >> OEM General Information >> Functional Description -- M3 Convertible >> Restraints - Functional Description >> Multiple Restraint System >> Impact detection

Impact detection

The MRS control unit picks up every collision within an angular range of 360°. The direction and severity of a collision are picked up by acceleration sensors in the MRS control unit and by external acceleration sensors.

External acceleration sensors:

The MRS control unit processes all the acceleration data. This determines the direction of a collision and the severity of the accident.