Why messing with VCDS when u just buy these cables, you select your car variant ? for your car
Smarter Shopping, Better Living! Aliexpress.com
www.aliexpress.com
The answer is in the link. The title:
For Audi A3 modified LED dynamic tail light wire cable This does not contain encoding
and Description:
For 2013--2015 Audi A3 modified LED dynamic tail light wire cable
Different models. The wires are different. The picture is for reference only.
For 2013--2015 Audi A3 modified LED dynamic tail light wire cable
This wire is not plug and play. You need to modify the code after installation.
Please refer to the corresponding option. Choose the appropriate wire.
The coding of light channels is associated with type of bulb being used by each light. As per Channel 09 admaps, the Lasttyp between all A3 8V tail light variations for each function is different.
But I know of these harnesses so I will mention of few other issues.
The only easy to use harness from the link is for change from PFL Halogen to PFL LED, even that requires coding as PFL Halogen has Driving/Running function in three supply channels per side but PFL LED only uses one channel to do the task. I know some people don't mind that and have kept PFL LED with dimmed Fog and dimmed Brake lights at night when they shouldn't be on, by using this harness and not coding.
In China, they don't have FL Halogen, so I have found them to be shipping harness with incorrect connector for outer taillights.
All harnesses for change to FL LED requires tapping extra 12V supply from fusebox or power socket that can't be found at rear end of car.
No 3 door A3 8V in China so no 3 door harnesses.
One of my friends ordered aftermarket FL LED for Saloon for change from FL Halogen., meant to be Plug and Play.. First the connector was wrong for outer tail light. Later discovered that inner light wiring was wrong, Left inner light pin order used on Right and Right inner light pin order used on Left. I had to troubleshoot and design harness to make them work.
The only Plug and Play and Zero coding option is for change from PFL LED to FL LED via AudiRetrofits or another german supplier online.