Pyrotechnic SEATBELT TENSIONERS
WARNING: This page does not describe the selected car, but rather 151 other vehicles, including the 2006 BMW X5, 2006 BMW M3, 2006 BMW 330Ci, 2006 BMW 325Ci, and 2005 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
The triggering of the seatbelt tensioners is dependent on the seatbelt contacts. The tensioners ill not deploy if the seatbelts are not connected.
The safety logic of the MRS/MRS II will deploy the airbags in an accident if faults are detected with the SBE or seatbelt contact inputs.