I have searched everywhere but not found the answer, I have an Audi A4 b7 3.2 Dsg cab, reverse light and parking sensors are not working(I bought it like this so not sure if the two are related) message on dash states “right reverse light” changed bulb no luck, not stuck a multimeter on it yet but has anyone else come across this?

Read various things about fuses but nothing that made sense.
Not sure how the reverse sensor works as the the DSG box,

Any idea where to start or potential common problems?

Thanks in advanced

Paul