iowaan

2000 A6 4.2, Can the fog lights be recoded so they can be turned on without turning on either low or high beam headlamps? We don't often have fog here, fog lamps would be most useful in winter when the snow is blowing, but having to have the low beams on defeats the purpose, the snow reflects back too much.

georgeb944

Pretty sure it's all done electrically by the headlight switch and its embedded foglight switch. Not the kind of thing that can be recoded by VCDS.

You could try this:

https://www.audizine.com/forum/showt...d-on-highbeams

Boston Driver

There is a simple way to do it, the "nene" fog mod which turns on the fogs with the parking lights, and requires only one wire to be cut and tapped behind the light switch. Remove the headlight switch, cut wire #8 and splice to wire #16. I've had this setup for several years (since 2006) and I've had no issues whatsoever. However, the fogs are now always on when the switch is in the parking or headlamp position (turns off when high beams are used).

AdaminMN

Interesting...

My 2000 Avant would allow me to turn the fog lights on when the parking lights were on, but on my 2001 Avant they'll only come on if the headlights are on.

Harleyguy

The set up is probably a leftover from German transportation rules. Illegal to run fog lights only. Also if you use fogs on the front, you are required to have a rear fog light as well. Adaptations for the rear were made on American versions making it selectable.