This has been happening to me on my 18 S3 with oem upgraded interior lighting. When this happens I also noticed the homelink does not work, the rear dome and trunk lights since they are all on the same circuit (the sunroof works as it's on it's own) .
I did scan with OBD11 and it came up with code B131411 (Supply voltage for interior lighting Short circuit to ground). I was only able to find a TSB 68 16 16 2043850/1 April 28, 2016 for the Q& which I don't think it applies since it does not have the same wiring in the visor.
I have replaced the fuse (f29) as well just to rule it out. I also checked the visor lights to see if they might have rubbed into the roof and they are good, not bare. I took down the dome light . I even jiggled the wiring to make sure they would not short out. The wiring was intact and did not find any bare wires. I did find the oem dome light (led board) is buzzing (no other led lights do this) when turned on. I cannot find anything and or anyone that has replaced the board due to failure. I am leaning towards replacing the board which looks like you can only buy the whole dome assembly.
