Example: Head-On Impact With Immovable Object At 0°. Crash Severity 3

Fig 1: Identifying Crash Severities

Courtesy of BMW OF NORTH AMERICA, INC.

If a fault is detected in the seat occupancy detection system, it is assumed that the seat is occupied and the restraint systems are activated.

If a fault is detected in the seatbelt buckle detection system, it is assumed that the seatbelt is not fastened and the restraint systems are activated with CS1.

In spite of this an attempt is made to activate the seatbelt lock tensioner.