1 Series E81 118i (N46T) 3-door
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JBE: Junction box electronics
> E70, E81, E87, E90, E91, E92, E93
The junction box electronics activates the central locking system.
If the CAS control unit approves the unlocking of the vehicle, for example, the doors will be unlocked.
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KGM and KBM: Body gateway module and body basic module
> E60, E61, E63, E64
The body gateway module actuates the central locking in the front doors.
The body basic module controls the central locking in the rear doors.
If the CAS control unit approves the unlocking of the vehicle, for example, the doors will be unlocked.
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Comfort Access control unit
The Comfort Access control unit (CA control unit) actuates the internal and exterior aerials.
An ID transmitter scan is carried out. At the same time, the FBD receiver is activated for any ID transmitters
which may respond.
> E60, E61, E63, E64 [more ...]
> E70 [more ...]
> E81, E87, E90, E91, E92, E93 [more ...]
System functions
Comfort Access is used to implement the following functions:
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Passive Entry via driver's door or front passenger door
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Passive Entry via tailgate
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Passive Go
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Passive Exit
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Disabling an ID transmitter located inside the vehicle
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Disabling an opposing command
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Tamperproof lock
Passive Entry via doors
The vehicle is unlocked when the outside door handle is gripped or pulled. Condition: The ID transmitter must be
located no further than 1.5 m from the aerial in the outside door handle.
Ideally, the user should carry the ID transmitter in a pocket.
First, the user is authenticated (= authenticity check).
The data transferred during the authenticity check is of course encrypted.
If the ID transmitter authenticity check is successful, the user will be granted access to the vehicle. The central
locking is unlocked. The door can be opened.
The same principle is applied for the authenticity check for Passive Entry and Passive Go.
Authenticity check using the example of Passive Entry:
•
Trigger signal at outside door handle electronics via capacitive sensor 1.
•
Request sent to outside door handle electronics to locate an ID transmitter via the aerials in the outside
door handle. All ID transmitters associated with the vehicle and located outside of it are included in the
search (low-frequency radio signal at 125 kHz).
SBT Comfort Access E60, E61, E63, E64, E70, E81, E87, E90, E91, E92, E93
BMW AG - TIS
19.01.2013 06:29
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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