I wanted to post this in the retrofit section, but the website is not letting me post there.
My account should be verified. I submitted a valid serial number.

I have a 2010 GTI (USA spec) manual 6-speed, with Bi-Xenon HID's. I'm trying to install aftermarket LED tail lights and can't find any information anywhere on the internet on how to code it with the VCDS.
I see a bunch of random forum posts talking about Byte 18, but no specifics on how to do it.

I plugged in my VCDS and looked at Byte 18, but it doesn't give me any options for light bulb "cold" monitoring. I looked through all the bytes and only found 1 check box for License plate (cold) monitoring. Can anyone at Ross-Tech please help me with this?