Scott: No, I ain't referring to the "blinker mod". I'm referring to the Leuchte-commands that tell the lamp what lighting function to operate.
Originally Posted by Scdude50
A mk7 Golf (and ALL MQB platform vehicles) has an individual "Leuchte-set" for each of the 35 x exterior lamps on the car. These Leuchte-sets are in the control module that OBD11 calls the central electrics module (i.e. the module that lives @ address hex09 on the CAN network). A Leuchte-set (for examle Leuchte21BR RC8) is made-up of 19 x adaptation channels like this:
Fehlerort mittleres Byte DTC-DFCC
Lichtansteuerung HD AB
Dimming Direction CD
Dimming Direction EF
Each of the Lichtfunktion (A, B, C....H) channels above can be programmed to perform a different lighting function - so an individual lamp can be made to operate in up to 8 x different ways. Clearly, the left/right turn signal lamps are factory programmed to operate as blinkers and the Leuchte-commands that are used for this purpose are Blinken links/rechts Hellphase , or Blinken links/rechts Dunkelphase - as I described in my previous post.
I'm not sure what you mean by the "opposite side white led light" - we don't get many 2017 GTI Autobahns (North American cars) down here in the very deep south . But I'm guessing that the Leuchte-set for this "white led" lamp might have been incorrectly programmed by applying a left-side Leuchte-command on a right-side lamp (and/or vice-a-versa).
I suggest that you look through the records in History using OBD11 for changes that were made to the car involving the "Hellphase", or "Dunkelphase" Leuchte-command. Check that the correct version of these commands have been applied to the correct side Leuchte-set (the name of the Leuchte-set will contain a "L", or "R" for Left and Right side lamps respectively).