BMW MS43 ECU SWAP HOWTO

[bobbik]

5WK90015 INDEX 07

I never made it before, could someone explain me how to do that?

[brend]

Isn.:) ECU and EWS mast have one.

[bobbik]

Ok. I've got some programmers, INPA , PA Soft, Arbitus made in China and some more. ISN i assume is some sort of id number.

[lush29]

Abritus never was made in china [emoji12]


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[yugo45]

If Original ECU available , read flash and write to new ECU . Job done.

[bobbik]

and what about 93c86?

[bobbik]

I replaced flash and didn't help. Replaced also eep and didnt work too.

[bobbik]

You mean 29f400?

[Cloudforce]

Read full flash file of 29F400 via Bootmode and flash new ecu with the content, done.

[yugo45]

Yes 29f400.
Like was mention above , you need to read full flash in boot mode or with programer. OBD flash has only tuning maps.
After that you must sync DME -EWS with scan tool. But you must use good tool, most of them not working on those older cars, I know for sure GT1, Autologic and Icom works.
Luch x431, Maxidas , AVDi will not sync it.

[bobbik]

Ok, update. After replace original flash and eeprom , and made synchro (no matter PA Soft or Inpa) car starts. But after few minutes ignition off , it doesn't. I have to do syncro again.
Car history is interesting: guy bought non-running car from BMW Dealership, they tried repair it, so now car is equipped with EWS 4,it is programmed and locked.
I was about to check if ISN in EWS is same as in Engine ECU, but i'm not sure if genuine UPA or clone xprog can read it without bricked ?

[bobbik]

Eprom EWS4.3. Someone with ews explorer please check ISN ...

[bobbik]

Checked it... is same as DME... Any ideas?

[bobbik]

I've read that it may depend on roling ISN used in newer EWS systems , and wrong coding my unit for older car?

[clauberty]

any DTC in ecu or EWS after sync is done ?

After sync erase DTC, thake EWS in hand and remove key, wait until you fill/hear the relay.

Ignition on relay must switch on, check DTC and with PAsoft or inpa check key live data in EWS

[bobbik]

I've got used ews3, could someone with ews editor send me print screen with keys codes from my EWS4 dump, please?

[bobbik]

SOLVED
I made EWS3 "factory", then copy underlined values, then make IKE->EWS config copy with PAsoft

[okest]

You know there is MS43 immo off solution available for free on internet, could have just used that and be done with it...

[rivalryan]

Also if swap flash and Eeprom together no need for Alignment, Same goes for full read.

[bobbik]

Is there? I haven't found, besides I don't trust immo off solutions, there is always a catch: Fan don,t run or you have to disable eeprom write or A/c do not run or else.
And the car is in very good shape, it would be a shame to do that. I am still curious why ews4 didn't work

[bobbik]

@rivalryan i suppose eventually DME was ok, it was not my diagnose. They bought non-run car and they were told that it is simple DME failure, while it was new EWS coding problem. Anyway, everyone, thanks for your help.

[rivalryan]

If you swap flash and Eeprom together no need to align, or full read.

[Cloudforce]

Is there? I haven't found, besides I don't trust immo off solutions, there is always a catch: Fan don,t run or you have to disable eeprom write or A/c do not run or else.
And the car is in very good shape, it would be a shame to do that. I am still curious why ews4 didn't work

It´s working flawless ;-)
www.ms43wiki.com