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Home >> BMW >> 2003 >> 745Li >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Intelligent Safety Integration System - Overview >> Intelligent Safety Integration System (ISIS) >> System Overview >> Vehicle Center Satellite (SFZ) >> Notes

Vehicle Center Satellite (SFZ): Notes

The SFZ is located on the transmission tunnel, under the front center console. The SFZ contains a transverse and longitudinal acceleration sensor.

Fig 1: Identifying Vehicle Center Satellite (SFZ)
G03391537Courtesy of BMW OF NORTH AMERICA, INC.

The vehicle center satellite, center is not responsible for deploying any airbags or pyrotechnic devices.

The SFZ is connected to the SIM via the byteflight.  The power supply of the satellite is also from the SIM and it is buffered by the memory backup capacitor. In sleep mode of the bytelight  , the power supply of the SFZ is deactivated by the SIM. The watchdog function is run via the SIM.