@T5-T6-Schnappi every thing else is working fine so far.
Battery dead, secondary battery dead, some DCT here and there after a year of an ECU dropping 200mA in Off-State.
But every other Unit is answering Fine.
And thanks for the Adresse, contacted them 
Searching the Internet got 2 possible Matches for cloning:
https://velectronix.com/products/2015-2020-volvo-s60-denso-ecu-clone-service-279700-9621?_pos=1&_fid=711851998&_ss=c
and
And all spicialists don`t work on this ECU. Asked ECU.de, AC Tronics, Endera .. no one wants to touch this thing, not even for a mesurement.
@T5-T6-Schnappi Car was for repair in an other shop, a dent, after repair no more crank, after a whole year they shipped the car to us, communication with ECU stoppes with "Negativ Responce Code 12", no further communication possible with ECU.
(Not sure if they missed to disconnect the battery before (spot)welding .. just oracling.
An other ECU communicates with all of my testers, but as logical, mismatched IMMO, no start.
The failure is the ECU / ECM. There is a very small hope that it is the Voltage regulator TLE8264E, i`m trying to get one. ANd the build in R5T725 CPU is BGA and not swapable for me and my skill.
I have an S60 II with a faulty ECU that has stopped communicating entirely, but I’ve found an identical replacement unit; however, I don’t know how to synchronize the control unit with the immobilizer.
Am I missing something here? Or not possible?
BR Robin
