Swap BCM - need to change PATS in PCM also?

[Go4IT]

Hi! I'm just curios what it takes to swap the BCM. AFAIK it holds the keys codes for unlocking and starting the car. But does the PCM also?
And how to clone or train the keys to a new BCM?
Does anybody ever managed to read out the BCMs Flash via JTAG, UCDS or ELM?

[marekrbk]

wenn BCMI Wechseln ist es notwendig, den keys wieder zu programieren,ucds mit forscan reicht. auslesen ipc und speichern in bcmi. pats keys loschen neue keys lernen und inicialisieren

[Go4IT]

Well, i really wonder why keys are stored in IPC? Is it like the backup for the CCC, so normally not used?
And is PCM not also in the line of PATS, and ABS?

[amplified]

swap bcm is quite easy, copy your asbuilt. Run BCM module initialization for the new module in forscan and it takes key data from car(PCM eeprom) and sends to bcm. Then load the asbuilt.