1997 A4 1.9tdi ecu swap/immobilizer help

[andy10v]

Hi guys

Looking for some dag dag ecu help.

I am trying to fit an chipped ECU to my A4, however when the new ecu is fitted the car starts and runs for about 1 second before cutting out, I assume the immobiliser is doing that?

Can I code the new ECU in with VAG COM? And if so what is the correct procedure?

I have found this in the VAG COM wiki, but I am not clear what my car has (or exactly what I am meant to do)

Immobo 1

http://wiki.ross-tech.com/wiki/index.php/Immobilizer_I_ECU_Swapping

Immobo 2

http://wiki.ross-tech.com/wiki/index.php/Immobilizer_II_ECU_Swapping

I have VAG COM, but am not familiar with how to use it, only got it for reading codes.

Car/ecu details;

1997 A4 1.9Tdi quattro,110 AFN engine

4A0 953 234
IMMO AUZ9Z0H2333467 D77

ECU numbers

My original ECU

Audi 028 906 021 EM
Bosch 0 281 001 553/554
06.09.96
28SA3033
1761 0520
810


Chippd ECU

VW 028 906 021 GL
Bosch 0 281 001 656
05.05.97
28SA3359
810
800 76505 1754 0034
1446

Any help or advice would be greatly appreciated

Andy

[prj]

IMO not a very good idea to swap the ECU's like that.
Are you sure both those ECU's were on engines with identical hardware fitted?

There are a few solutions to this, all require SMD soldering.

[andy10v]

Hey

It was meant to be a de immobolized ecu, chipped and a straight swap.

That would not appear to be the case, however if I could sort the immobilizer issue it would save it being sent back.

This was meant minimize hastle/downtime of sending my ecu off.

[prj]

Well, do you have a hot air station?

[Nuno Cristiano]

Can you read EEPROM via OBD! VAG TACHO can read Immo and after it is only necessary decode file

[prj]

VAG Tacho will read cluster...
I don't think you can read MSA-15 EEPROM over OBD.

[Nuno Cristiano]

VAG Tacho will read cluster...
I don't think you can read MSA-15 EEPROM over OBD.

Test and you will see!

[prj]

Test and you will see!

Not sure what you mean.
VAG Tacho reads Cluster EEPROM, not ECU EEPROM.

Although for Immo 2 and Immo 1 it should be enough to write 00 into channel 00 in VAG-COM.
I assume OP has already tried to do this?

[Select]
[17 - Instruments]
[Adaption - 10]
Leave channel at "00"
[Read]
[Save]
[Done, Go Back]
[Close Controller, Go Back - 06]
[Exit]

[andy10v]

Although for Immo 2 and Immo 1 it should be enough to write 00 into channel 00 in VAG-COM.
I assume OP has already tried to do this?

Not yet.

I presume anything in [] is a button to click?

Do I plug the new ECU in and try this? Or do I need to get anything from the old ecu first?

Thank you for your help/patience.

[prj]

I presume anything in [] is a button to click?

Yes.

Do I plug the new ECU in and try this?

Yes.

Or do I need to get anything from the old ecu first?

No.

Thank you for your help/patience.

Yes.

[andy10v]

Sorted, thank you very much

I did exactly what is written above but in [Immobilizer], it did not work doing it in [Instruments]

Thank you for babysitting Dmitri

[spink]

hows it go now?

[andy10v]

Only been out for a quick run, its icy.

Pulls harder, and feels like it revs through much more cleanly, feels more "eager" all round. Does not fall off like stock either.

Will see tomorrow how much it smokes

[jbh]

bit of a thread revival here...

Andy im semi local to you and im having similar issues.. ive got an Chipped ecu im needing programed into my 110 TDi quattro could you help me out?

[andy10v]

Sure, can do the read, write, save thing in vagcom, if it there is something else though you are welcome to use vagcom, but you will need to know what to do.