This is a non-functioning copy of the Excel spreadsheet attached to this page.
It will only work for a Passat B6 as the code/functions vary with make & model.
You code your car using VCDS and the longcoding helper.
This spread sheet is just to allow you to play with the codes without touching the car.
To use it.
Download the spreadsheet.
Use VCDS to extract the CENTRAL ELECTRICS coding.
Eg. 00880F0700041A00000A00000F000000000859435C0000
Enterer your code in the YELLOW box on the spread sheet.
The FUNCTIONS coded for your car will appear in the FUNCTION column on the spreadsheet.
I BELIEVE THAT ONLY THE FIRST 20 BYTES ARE USED. (READING LEFT TO RIGHT)