Activation the safety system

Comprehensive tests are used to define triggering thresholds for all possible types of accident. This results in different trigger thresholds for activation of the various restraint systems (airbags, seatbelt tensioners, etc.). The restraint systems are only triggered if 2 independent sensors simultaneously detect the corresponding threshold values.

The Crash Safety Module (ACSM) processes acceleration data from the sensors. The Crash Safety Module relies on acceleration data to determine the direction and severity of an impact. In the event of an impact the Safety Module determines whether deployment is required and which gas generators (belt tensioner, airbags, etc.) should be ignited. For example, the seatbelt tensioners have a lower trigger threshold than the front airbags. This means that depending on accident severity, only the belt tensioner may be activated by the Crash Safety Module.