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martin1234
28th October, 2019, 10:26 PM
mercedes R230 2003

Hi this is the 2nd attempt and second used unit i have bought to try to sort this out,
any input is appreciated

from the original eis i red both muc chips 4j74y mask (r1 and r2) both chips and saved the bin files , ie eeprom and both flash files
i still got these bin files just in case.
with R270+ we then transferred the bin files over to the used unit chips again they were 4j74y chips (same as original unit,
all seemed to go well, the car started the original keys worked the car drove ok and locked etc, (but when we went into the car with mb start and autologic just to see if there were and issues because the roof would not work,
and we could see there was about 4 - 5 ecus not being seen on the can link, and the replaced eis was not seen in the unit list,
so we have bought another unit,
the original eis unit part number is 2305452308
the replacement used one i have just bought is 2305450508

so what the best way to go again, thanks all

Manta1600
28th October, 2019, 11:40 PM
I don't think that your EIS is the problem


Did you checked the CAN line resistance on the OBD plug?

p1et
29th October, 2019, 02:11 AM
mercedes R230 2003
the original eis unit part number is 2305452308
the replacement used one i have just bought is 2305450508

so what the best way to go again, thanks all

Copy MCU eeproms to same part number EIS