Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
4.2.3. Triggering time and triggering sequence
The Crash Safety Module uses the values transmitted by the sensors to determine the direction and severity of the crash.
In the case of a front-end crash, for example, correspondingly high acceleration values must be detected by the longitudinal acceleration sensor in the B-pillar and by the longitudinal acceleration sensor in the central sensor. Based on the acceleration forces, an algorithm detects the severity and direction of the crash. Using this information, the triggering times and the sequence of the restraint systems to be activated is calculated.
A possible imminent rollover is also detected and the appropriate protection systems are activated.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.