Audi B5 A4 AWM ecu reading on bench?

[AudiS4]

Hey guys So I have a question. A friend asked me for a favor to see if I could help him. He has a awm ecu me7.5 swapped into a older golf. The ecu is tuned by unitronic. He wants to delete the flag for the vehicle speed sensor from the flash. Unitronic wants $200 to do it. he asked me if theres anyway to read the flash on the bench and delete the flag so the fault no longer sets? Any ideas?? REading via OBDII failed cause the ecu is locked out by unitronic Im sure. Curious if it makes sense to try reading in bootmode on the bench??

[nusuntcatalin]

I had this situation with revo tune, I never tried but I have been thaught the only solution is to read by BDM

[albizkit]

speed limiter or the whole car does not see speed?
because it will be different in both types
the speed limiter will raise the maximum speed and for removal it is not a good idea because the car will not be able to calculate which gear it is in and will pull

[AudiS4]

Doesn’t see vehicle speed as it’s swapped into a different car that doesn’t have a speed sensor not transmission.


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[albizkit]

Better change the speed sensor.
Install an electrical speed sensor and send a signal to the ECU
and then if you want speed on the dashboard you can change it and show it there.
If I understood you correctly

[AudiS4]

Better change the speed sensor.
Install an electrical speed sensor and send a signal to the ECU
and then if you want speed on the dashboard you can change it and show it there.
If I understood you correctly

No.The transmission used with the engine now does not have a speed sensor, transmission has a cable driven vss that attaches to the cluster as it a older car form the late 80s. Just need to delete the code so the car doesn't go into limp mode.

[alonedark]

Me7.5 by bdm . Como se hace eso?

[dtip]

I think this ecu have 29F800BB flash memory, you can read it externaly on programmer or probably by boot mode.
But just deleting DTC won't help for limp mode, car will still behave same ONLY dtc wont be displayed...

[alonedark]

Try to read dtc and ecu with k line in pin of the ecu

[AudiS4]

I think this ecu have 29F800BB flash memory, you can read it externaly on programmer or probably by boot mode.
But just deleting DTC won't help for limp mode, car will still behave same ONLY dtc wont be displayed...

If I delete DTC flag then technically it should never go into limp mode no?


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[dtip]

If I delete DTC flag then technically it should never go into limp mode no?


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no it does not work like that, as i said before, in case you just delete DTC on that ecu car will behave SAME as before, only DTC wont be displayed, you need someone who knows how to disable limp mode on that ecu or disable that speed sensor monitoring you have problem with, so i suggest you pass that job to that shop who is asking 200$ for proper job and you will avoid further headche

[abrush32]

I have read them bootmode mpps , worked by obd too.
no read file, need to remove the tag to edit.

no need to even do this.. Mk4 speed sensor works on mk3 cluster and the output to the ecu is the same.
I have an 04 1.8t awp in my 95 golf with no speedo at all and the car does not act abnormal drives like it should.

[AudiS4]

1.8T swapped into a mk2 golf. Worlds apart from a mk4 or mk3.