Polo 6R: Engine Byte 4 Not Set - Normal?

Hello,

My engine was replaced at the beginning of the year.

I am now in VCDS under "Engine" -> "Coding" -> "Byte 4".

It just says "00" there. Did they forget to put something else?

In my opinion, it should be number 01, the switched fan. Because my 1.6 TDI CAYB Polo 6R only has one fan at the front, and it doesn't turn on until a certain temperature is reached.

I'm not sure about the electric water pump; I think my car probably doesn't have one.

Or what does that mean?

Is there a comprehensive explanation available for all the options, checkboxes, and combobox values within VCDS?

Hi,

Quote:

Is there anywhere a comprehensive explanation for all the available options, checkboxes, and combobox values within VCDS?

"No, not really. While there are many control units with different firmware, the coding depends on each specific unit. Some people who don't understand the technology publish 'coding lists' online, but the problem with these lists is that they are sorted by vehicle model, not by the installed control unit(s)."

You can consider these as a collection of ideas, and it would ultimately be worthwhile to investigate whether they could be implemented, but that's all.

Best regards, Rainer.