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Adjusting distnce impulse or K-number

Posted: 20 Aug 2025 02:54
by rrador
Is there any way to adjust k-number on sw 1104? From what I have found it's not possible to change coding on these newer clusters.
But is there any way to alter eeprom to get this fixed? For example I put passat cluster into a golf.

I did a search on the forum and only one thing that I found was this one post by @skodapilot saying to copy data in offsets 0xAD and 0xB6 from old to new cluster. But clusters I have do not have any data in there (00 and FF)

What are the best options here if there is any

Re: Adjusting distnce impulse or K-number

Posted: 20 Aug 2025 05:02
by heinlein
Depending on the SW version of your old cluster, the offsets are probably different.

But 0xAD is for the wheel circumference, and 0xB6 is for the ability to change the K-value in long coding. You can set 0xB6 to FF to be able to select all K-values, and 0xB7 to FF, which acts as a bitmask that actually allows you to change the value.

This being said, I did not find that this worked for me with Chinese Passat Cluster 35D920880E. It didn't matter what value I had in 0xB6 or 0xB7, I could not change the K-value from 1 (maybe restricted in firmware).

You could maybe play around with long coding in the EEPROM 0xCB-0xD9, it's 5 bytes repeated 3 times. However, this long coding is obfuscated and I didn't figure out the pattern.

Maybe my post will help you https://forum.skodapilot.com/viewtopic.php?t=432#p2025
This post has information about other values in the eeprom: https://www.drive2.ru/b/597403426229324541/

Re: Adjusting distnce impulse or K-number

Posted: 22 Aug 2025 03:18
by rrador
Thank you, I did a lot of reading today and I think I figured something out. Just need to test it now