No running daytime running lights or side lights

31 20A Sliding roof control unit 32 20A Sliding roof control unit 33 20A Sunroof roller blind control unit
https://fusesdiagram.com/audi/fuses-and-relay-audi-q7.html

from

https://www.google.com/search?q=2007+Audi+QUATTRO+3.6+fuse+for+panoramic+window

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if you did it yourself and did not use factory lights or ballast then it could be a voltage detection problem. If you did use factory parts then the headlight switch may have failed by coincidence. also check connections at HL plugs and or switch. ???????????

I’m happy to assist further over the phone at https://www.6ya.com/expert/howard_977676954994c5b2

Under bonnet on the right side of the car face to windscreen you will find the fuse box / relay plate - engine bay. Here is placed the Data Link Connector (DLC) for Audi A6 Quattro 1997.

Sometimes the issue is with the mechanical vacuum pump off to the side of the ABS/ESP module. It looks like a round silver canister. This issue is all over Google with many possibilities but the one I copied is most common.

This switch should be located on the side of the transmission and will have 2 wires coming out of it.

the diode maybe leaking or shorted out. It should only conduct one way.

common for the brake lights to stay on but not tail lights are you sure its tail lights ? if it is are the front side lights on ?

AUDI A4- 2005. There is a technical service bulletin for this exact problem. take it to the dealer when this issue has happened while driving. During a daytime drive when cold see if you cant get the light to fail while circling your dealer. As soon as you pull into the service drive do not turn the car off do not flip the switch. I am an Audi Technician for a dealer in Birmingham alabama. Personally this is not my favorite repair to perform; What audi states is that if the bulb flickers the bulb should be replaced; if one side fails the bulb should be swapped left to right if the fault continues with the bulb the bulb is at fault; if the bulb is swapped and the bulb fails again on the same side it is the module. NOW: I currently am working on a 05 A4 that both bulbs both modules have been replaced and Audi has no clue what to advise on a repair. THIS IS AN ISSUE if it has happened to you ask if there is a TSB for this issue or try to find it for yourself.