Originally Posted by Mike_L
I have no red byte, and my binary looks nothing like that.
Well, I found the page you found this on, and on that page there's a byte highlighted in red - it's not going to be red in VCDS, but it is the 32nd digit when counting from the left - note that it's a "7" on his example beforehand and then an "F" afterwards. If my math is right that's byte 16.
If you select byte 16 on your long coding helper it should show an 8-bit field and bit 4 of that should be 0. In a perfect world you'd see the same data as the poster (his was 07 or 00000111 in binary) and change it to match (0F or 00001111) but either way it should be bit 4 you're setting to a 1.
Disclaimer: I have no idea if the procedure is correct, I'm attempting to explain someone else's posting. I also don't have a current VCDS with long coding so I may be slightly off in explaining it.