NefMoto > Technical > Flashing and Chipping > ME5 Immobilizer
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Author Topic: ME5 Immobilizer  (Read 5826 times)
sean337
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« on: March 15, 2012, 01:31:28 PM »
I have a MK3.5 Cabrio with 2.0 engine that I need to replace the ECU in. Already tried matching it into the car with VAG-COM but it requires login code. I read out 24C02 serial eprom from the original ECU and the used replacement ECU. Is anyone here familar with how to diasble the immobilizer in this ECU? Should I just swap the 24C02 eprom from the old ecu to the new?

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Rick
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« Reply #1 on: March 15, 2012, 02:01:25 PM »
swap em round
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matchew
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« Reply #2 on: March 15, 2012, 04:39:53 PM »
Copy the contents of the EEPROM from your old ECU and put it into the EEPROM of your new ECU.

Also this ECU is not ME5.
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Gonzo
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« Reply #3 on: March 15, 2012, 05:16:45 PM »
What year is this Cabrio? NA-spec?
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sean337
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« Reply #4 on: March 15, 2012, 06:35:49 PM »
Gonzo - I believe it is a 2001, it is NA spec face lifted cabrio that has the mk4 golf front end.

037 906 018 A <-- this is used ECU replacement box code
037 906 018 C <-- this is original (failed) ECU box code

So should I swap the small serial eproms around, or do I need to swap the main flash memory as well?

Thanks!
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RaraK
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« Reply #5 on: March 19, 2012, 10:19:46 AM »
serials need swapped or rewritten to off or to copy old one.
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sean337
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« Reply #6 on: March 19, 2012, 06:44:37 PM »
Thanks RaraK, I ended up swapping the small eproms around, could have just as easily flashed the old info onto the replacement ECU I suppose. This worked great and the car is back on the road.

For future reference, if I didn't have the old original ECU, how could I disable the IMMO within that eprom. I can post the dump from both box codes if needed.

Thanks for the help everyone!
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RaraK
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« Reply #7 on: March 28, 2012, 10:42:12 AM »
not super sure, but a skc extraction is likely the easiest method and program via VCDS
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julex
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« Reply #8 on: March 28, 2012, 11:13:08 AM »
Quote from: sean337 on March 19, 2012, 06:44:37 PM
Thanks RaraK, I ended up swapping the small eproms around, could have just as easily flashed the old info onto the replacement ECU I suppose. This worked great and the car is back on the road.

For future reference, if I didn't have the old original ECU, how could I disable the IMMO within that eprom. I can post the dump from both box codes if needed.

Thanks for the help everyone!

You can either copy/paste immo stuff into new eeprom to avoid any possible issues with new ECU using different EEPROM regions for different things than older ECU or flip two bytes around to disable immo altogether and then hand modify checksums or run the file via the checksum calculator program I just posted yesterday in this forum.
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