The BMW
Explorer program has a possibility of reading a code of synchronization of ISN
(all versions of CAS1 CAS2 CAS3 CAS3+).
Go to the
CAS control unit, "Additional functions", "Reading ISN"
In the
opened window ISN will be displayed.
If the machine
is equipped with the EWS3 system where 2 bytes of the constant part and the
change are used, it will be displayed in the window 2 bytes of ISN DME (the
upper 3 windows will be empty), if necessary they can be changed.
If the
machine uses the EWS4 system, then 16 bytes of constant synchronization are
used and there is no variable part.
Also after
2006, CAS3 uses an anti-theft code for EGS
If there is
an EWS3 system in the car, then this code is the same with the engine control
unit, if the machine already has an EWS4 system, then EGS uses separate 2 bytes
The program
is in place of the engine ISN, it will display the gearbox code .. as in the
picture below