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Author Topic: RS4 Cluster for S4, copy of Immo  (Read 4935 times)
OberlandRacing
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« on: February 20, 2026, 04:15:13 PM »

Hello Guys,
I have an S4 & RS4 Cluster on the Bench. I need to copy all Immo informations from the S4 to the RS4 Cluster. I dont have the Car or ECU here.
I never done it, and would like to ask if someone can check what i´ve done.

I did copy from the S4 file to the RS4 Cluster file:
-ViN
-SKC/Login (was "tricky" because of swap byte)
-Immo Key (handshake between ECU/Cluster)

is there any Checksum that i need to correct? any tool for that? 
Checked my changes with VAG EEPROM Programmer seems good so far, did i overlooked something?

Thanks!
 
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RS4 B5 TTH550
grayjay
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« Reply #1 on: February 21, 2026, 11:20:52 AM »

program KW1281test does a good job of dealing with cluster changes

for discussion here see;
http://nefariousmotorsports.com/forum/index.php?topic=23854.0
 &  _nameless made a GUI for KW1281test;
https://nefariousmotorsports.com/forum/index.php?topic=23984.0
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OberlandRacing
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« Reply #2 on: June 30, 2026, 02:30:17 PM »

Im still in a trouble with this one.
Car still throws the Immo LED on the Dash.

I checked the File with eepromtool_04 and it said the SKC is still from the new "RS4 Dash".
Shouldn't SKC & Login Code be the Same?

Login is 30 16 -> 16 30 -> 05680
SKC is 02022 stored at 0xCC / 0xCD

In all Posts that i can find, SKC and Login are the same Value.
What am im missing here? 
VAG EEprom Programmer shows the same Immo Key, Login Key and VIN as the stock S4 Dash

Attached File is with adapted SKC thru EEPromtool_04
Anybody can confirm, if this works or if im even on the right path?
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RS4 B5 TTH550
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