DRL not work after coding byte 18

DRL does not work after byte 18 encoding
Please help, how to fix DRL on golf 6. I was changing the codes on byte 18. It was 00 and I typed 15, and that turned off the front daylight LED lights, when I returned the codes 00 the malfunction did not improve. What to do? Thank you!

First thing to do, would be to post a full auto-scan from the car in question.

Second thing to do, would be to go in front of the nearest mirror, look at it and ask "Why did you ignore the warnings VCDS was showing to you and touched that infamous byte 18?".