BMW M5 MSS65 DME SWAP-SIEMENS-

[dd1]

Hello everyone, trying to swap a bmw dme mss65 on a 2005 bmw m5. i had a used unit, good working and communication ok. i copied the original data and wrote over the used one. now, the used has no comm. i install the original unit and i have a communication. i tried second time, this time i erased the mpc and flash before writing, again no luck. i am doing both sides, both MCUs. posting my files. thank you in advance

[Morette]

Right MPC is ok, Left MPC has some slight changes, maybe poor connections.

The two flash files are both missing some areas on the second try.

If you need to compare files to make sure, you can let winrar check!

[dd1]

thank you, i will try to read it with a different xprog.

[dd1]

Right MPC is ok, Left MPC has some slight changes, maybe poor connections.

The two flash files are both missing some areas on the second try.

If you need to compare files to make sure, you can let winrar check!
i don’t know why, the left side mcu is giving me VERIFY ERROR, I am using my second xprog. Different unit. If I get another used unit, what’s my options to make it work in this car? Thank you

[Morette]

I believe MSS65 is EWS3, so two byte ISN and rolling code. It should be possible to read the ISN and change in the CAS if you have R270 or if your Xprog is OK with CAS reading/writing.

Other options might be try BDM100 or another tool with BDM capability.

[dd1]

It’s a cas, not an ews

[kareszka]

Hello !
I think this mcu have configuration file not only flash You need check this same in 2 ECU .
Br

[Pietert]

Do you perhaps have a pinout diagram of the Dme mss65 unit?

[dd1]

Do you perhaps have a pinout diagram of the Dme mss65 unit?

here you are, Bmw dme mss65 bdm pinout

[Lambda1]

There is MSS60 and MSS65 with one processor locked... they cant be read and so dont be cloned.
Only few once of first building years can be read, write.

[dd1]

There is MSS60 and MSS65 with one processor locked... they cant be read and so dont be cloned.
Only few once of first building years can be read, write.
thank you, so i can read but no write???? because i can read both MCUs but writing gives me errors. i even tried 2 different xprogs with different versions, latest even and no luck. and what is interesting is that i can erase with no problems. what is my next option

[Lambda1]

You can read but there is no data. This ecus cant be cloned :8.
Seperate data fram CAS or EWS Modul and Sync with this.

[dd1]

You can read but there is no data. This ecus cant be cloned :8.
Seperate data fram CAS or EWS Modul and Sync with this.
thank you, so i read the DME and sync the original cas with it?