1 First Name: vee Location: Hong Kong Audi Model:: A6 2.8 Audi Year: 2010 Posted April 12, 2022 (edited) I am restoring an Audi A6. Both head lights did not work. Removed them and stripped them to find all the internal cabling gutted. The HID controllers had signs of water damage. Common wiring problem if you are getting the Adaptive Light Defective warning. This is on a 2007 Audi A6. Driver's side headlight issue On a recent trip with my 2014 A4 I received a loud beep and dashboard message letting me know that my driver's side high/low beam headlight had stopped working. I ordered a replacement xenon bulb (D3S model), and because it was the driver's side bulb and therefore easily accessible, decided to install it myself. Audi A6 C6: Diagnostic Guide for Adaptive Headlight Problems. Adaptive headlights are one of the most complex mechanical features in the Audi A6 C6. This article will explain some of the ways you can solve problems with adaptive headlights. This article applies to the Audi A6 C6 (2005-2011). Figure 1. You may see this message on your dash. Step 2 - Is it a broken wire? If the adaptive headlights fail to adjust at all, there is a possibility that the one of the wires going to the adaptive headlight motor could have been pinched or torn. The only way to know for sure is to open up the headlight and check. ZBQqLL6.