ECU ? Question

axel_ny · 11-04-2008, 07:52 PM

i am wonder if i have to recode with vag-com and what do i have to recode once i replace an audi a6 Q 2.8 ECU , with an vw passat ECU with same part no...?

cparke · 11-05-2008, 08:44 AM

axel_ny · 11-06-2008, 01:24 PM

what i was thinking is to read all the controllers from my ecu and recode the modules on the passat ecu , using vag-com i guess. when i read my ecu data i go in adaptation ? or is just what i see at first page , soft coding...?i am a little confuse , but i know i have to recode the passat module for quattro , trans , engine , brakes, central at least , i am wonder if vag-com will do the job

cparke · 11-07-2008, 04:12 AM

diagnosticator1 · 11-09-2008, 09:01 AM

See link, the example is for the 2.7T, however the 2.8 ECU coding is similar if not the same.
You can use the same coding in the replacment ECU as is stored/used by the original ECU.

Clicky.

axel_ny · 11-09-2008, 10:25 AM

i understand that but i think i have to match the replacement ecu with the original ecu values on more than just the engine code, because i have more future than passat on a6, and key match / quattro , central locking system .. , but thank you for the link , i will dig some more info before i start do something

cparke · 11-09-2008, 12:18 PM

Central locking is a separate module. If you aren't changing it, it will retain its existing coding.

11-05-2008, 08:44 AM	#2
cparke AudiWorld Senior Member Garage is empty, add now Join Date: Apr 2008 Posts: 687	Maybe --- there is at least auto/manual transmission & awd/fwd coding to check

11-06-2008, 01:24 PM	#3
axel_ny Audiworld Junior Member Garage is empty, add now Join Date: Feb 2008 Location: Austin TX Posts: 59	Re: Maybe --- there is at least auto/manual transmission & awd/fwd coding to check what i was thinking is to read all the controllers from my ecu and recode the modules on the passat ecu , using vag-com i guess. when i read my ecu data i go in adaptation ? or is just what i see at first page , soft coding...?i am a little confuse , but i know i have to recode the passat module for quattro , trans , engine , brakes, central at least , i am wonder if vag-com will do the job __________________

11-07-2008, 04:12 AM	#4
cparke AudiWorld Senior Member Garage is empty, add now Join Date: Apr 2008 Posts: 687	There is a button for "Coding". The coding is a single number.

11-09-2008, 09:01 AM	#5
diagnosticator1 AudiWorld Super User Garage is empty, add now Join Date: Oct 2005 Posts: 6,127	The coding value to enter, is built up using the bit values shown in the chart... See link, the example is for the 2.7T, however the 2.8 ECU coding is similar if not the same. You can use the same coding in the replacment ECU as is stored/used by the original ECU. Clicky.

11-09-2008, 10:25 AM	#6
axel_ny Audiworld Junior Member Garage is empty, add now Join Date: Feb 2008 Location: Austin TX Posts: 59	Re: The coding value to enter, is built up using the bit values shown in the chart... i understand that but i think i have to match the replacement ecu with the original ecu values on more than just the engine code, because i have more future than passat on a6, and key match / quattro , central locking system .. , but thank you for the link , i will dig some more info before i start do something __________________

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11-09-2008, 12:18 PM	#7
cparke AudiWorld Senior Member Garage is empty, add now Join Date: Apr 2008 Posts: 687	If you are replacing just the ECU, it is just the engine coding to be concerned with Central locking is a separate module. If you aren't changing it, it will retain its existing coding.

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11-09-2008, 12:18 PM
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