5 Series E61 523i (N52) TOUR
The crash safety module triggers the safety battery terminal if the monitoring wire is damaged or there is a short
to positive or negative. The battery cable is consequently separated from the battery.
Notes for service staff
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General note: [more ...]
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Diagnosis: [more ...]
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Encoding/programming: [more ...]
National versions
The following national versions are described:
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US
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Japan/Gulf States
US national version
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Knee airbag
> E63, E64, E85, E93
When triggered, the knee airbag provides support for the knee if the front passenger is not wearing a seat
belt. This initiates controlled forward displacement of the upper body. The upper body is cushioned by the
respective airbag (driver's or passenger's side).
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Adaptive belt force limiter, front left and front right
> E70
The pyrotechnic belt force limiter minimises the load on the upper torso of the front-seat occupants in the
event of a severe frontal collision. The risk of injury from the force of the seat belt acting on the body is
reduced.
Two torsion shafts are fitted in the inertia reel. The torsion shafts are intermeshed. Up to a certain load, the
belt force is specifically limited by the two torsion shafts. From a certain load, a gas generator is used to
decouple the torsion shafts. Only one of the torsion shafts is connected to the belt. This allows the belt force
to be smoothly limited for the entire duration of the impact.
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Seat position detector on the driver's side
> E70
According to the stipulations of the FMVSS (Federal Motor Vehicle Safety Standards), the driver's seat
must be able to tell the difference between a 5% woman and a 50% man.
The seat position detector indicates the longitudinal position of the driver's seat. This allows the system to
recognise the distance between the person sitting on the driver's seat and the steering wheel.
The seat position signal influences the response of the adaptive belt force limiter and the delayed triggering
of the 2nd stage of the gas generator (driver's airbag).
The adjustment distance of the driver's seat is registered by Hall sensors in the drive and processed in the
seat module. The seat module emits a message on the K-CAN. The crash safety module is a bus
subscriber on the K-CAN.
Note: Recalibrate the driver's seat
Over time, repeatedly moving the driver's seat forward and back can cause the seat position to become
implausible. When the driver's seat needs to be recalibrated, this will be shown by a Check-Control symbol
and a Check-Control message.
Calibration is described in the vehicle Owner's Handbook.
SBT Crash safety (ACSM) E60, E61, E63, E64, E70, E85, E93
BMW AG - TIS
06.02.2013 01:17
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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