Z Series E85 Z4 3.0Si (N52) ROADST
The following sensors detect the direction and severity of an impact:
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Sensors in the crash safety module
The following sensors are installed in the crash safety module:
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2 acceleration sensors for longitudinal and transverse acceleration
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1 yaw-rate sensor to detect vehicle rollover (E64, E70, E93)
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2 acceleration sensors for transverse acceleration and acceleration about the vertical axis for detecting
rollover (E64, E70, E93 only)
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Airbag sensor in B-pillar, driver's and passenger's side
The 2 airbag sensors in the left and right B-pillars each feature one transverse acceleration sensor and one
longitudinal acceleration sensor. The sensors are arranged at 90 degrees to each other.
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Front airbag sensor, driver's side and front-passenger side
The 2 front airbag sensors are longitudinal acceleration sensors.
The installation of the front airbag sensors depends on the national version.
> E60, E61, E63, E64, E85, E93: US version only
> E70: Europe and US versions
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Airbag sensor on front driver's side door and front passenger's side door
The 2 airbag sensors are pressure sensors.
The installation of the airbag sensors depends on the national version.
> E60, E61, E63, E64: standard
> E70, E85: US version only
> E93: Europe and US versions
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The following components send signals to the crash safety system:
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Seat belt buckle switch for driver's seat belt and passenger's seat belt
The seat belt buckle switches provide information as to whether or not the seat belts are buckled.
The crash safety module powers the seat belt buckle switches.
The power consumption of the switch forms the signal for the switch position (seat belt engaged or not
engaged). The signal from the seat belt buckle switch decides whether or not the seat belt tensioner is actuated
when needed.
The seat belt-lock switches on the driver and front passenger seats are permanently monitored when terminal R
is ON.
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Seat-occupancy detector, driver's side
> Only vehicles with option 5DF "Active cruise control with stop & go function".
The seat-occupancy detector for the driver's side is only used to control the system (active cruise control with
stop & go function) (e.g. if the driver intends to get out of the vehicle).
If the driver's seat is occupied, the seat occupancy mat changes its resistance. The signal is sent to the crash
safety module via a direct wire.
The crash safety module emits this signal as a message on the K-CAN.
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Passenger-seat occupancy detector
The passenger seat-occupancy detector recognises whether the seat is occupied or not. The resistance of the
SBT Crash safety (ACSM) E60, E61, E63, E64, E70, E85, E93
BMW AG - TIS
18.02.2013 04:36
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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