VAG Bosch ME9.1: How to read EEPROM content

[d2mike]

Hi DK,

can you please tell me how to read the eeprom of a VAG Bosch ME9.1 engine ecu?

What tools are able to?
I already tried VAGdashCAN ... but w/o success.

Thanks.

Cheers,
d2mike

[technic]

BDM or AVDI. The latter won't always give you full content, though.

Sent from my HTC Desire S using Tapatalk 2

[d2mike]

BDM or AVDI. The latter won't always give you full content, though.

Sent from my HTC Desire S using Tapatalk 2

Is there no other software?
What chip is inside ME9.1?

[exe123]

AFAIK AVDI cannot read the eeprom. It will just give you PIN and CS bytes.
Via BDM you will get the content of the 95080/95160 but it is crypted on some versions.

[d2mike]

AFAIK AVDI cannot read the eeprom. It will just give you PIN and CS bytes.
Via BDM you will get the content of the 95080/95160 but it is crypted on some versions.

Ok, thanks.
So no other chance?

[technic]

No other tool that I'm aware of. But with CS bytes you should be able to clone the ecu if that's what you are after. Note that the seventh CS byte sometimes is not available in the ecu.

Sent from my HTC Desire S using Tapatalk 2

[k0mpresd]

bdm or use a programmer.

[d2mike]

Hi mates,

I have the bdm file here.
Are you able read/extract the immobilizer data out of it?

Cheers,
d2mike

[d2mike]

Ok, I have another idea.
The background is, that I have to restore a full immobilizer system (Audi A4 B7, MY 2005, Immo4c)

Actually, if I give the dashboard a new identity (with all relevant immobilizer data) it must be possible to retrieve these data over the normal VCDS ecu learning procedure, right?

Perform login -> wait 2 mins -> Adaption -> Channel 50 -> and so on

What do you think? Is it working?

Cheers,
d2mike

[d2mike]

Any ideas/suggestions, mates?
Thanks in advanced.

Cheers,
d2mike

[digitaltech]

Any ideas/suggestions, mates?
Thanks in advanced.

Cheers,
d2mike

Well technically, then key matching. What was the underlying issue ? Old ECU died ?

[IDispatch]

MED9.1 has inside 95xxx EEPROM. You can read it with any EEPROM programmer or BDM. But this EEPROM is useless because you cannot do anything with it - the most important data (PIN/CS) are encrypted, and the encryption is individual for each engine control unit.
The solution is to read the EEPROM by OBDII (e.g. with the mentioned AVDI) - this will read PIN and CS
Then read Dashbard and get from there the PIN and CS.
Then there are two possibilities - adapt the engine to the dashboard (as far as I know only AVDI can do this - you will need PIN and CS for it). The other possibility is to adapt the dashboard to the ECU, but once again you need to change PIN/CS/MAC of the dashboard (adaptation on channel 50 is not working at all on this model).


And finally you should pay attention that for the power class - if the replacement MED9 is from other engine type the power class should be adapted too - first need to find the power class of the engine control unit (as far as I know only AVDI can do it) and then to modify in the dashboard.

[d2mike]

Thanks mate.
The login and power class from engine ecu I already have
I just want to transfer the immobilizer data from the dashboard to the engine ecu and this should work imho via adaption channel 50.

[exe123]

Thanks mate.
The login and power class from engine ecu I already have
I just want to transfer the immobilizer data from the dashboard to the engine ecu and this should work imho via adaption channel 50.

That's depending on the ecu. Some MED9 deny learning via channel 50.

[d2mike]

That's depending on the ecu. Some MED9 deny learning via channel 50.

Ok, can you verify it via the part number?