Audi A6 MY17 Tow Bar Retrofit

[dtwort]

Hi,

I have retrofitted a genuine factory towbar and dedicated wiring kit to my MY17 A6 BE 2.0 TDI Quattro.

The parts were bought from my local Audi Main Dealer and I was reasonably confident because this is something that I have done to both my B6 Passat and my dads VW Golf.

However, the A6 has a lever in the boot to operate the swivel towbar mechanism and a status light on the bracket that shows whether the ball is locked into place.

The problem is I cant get the status light on the bracket to work at all.

I have tested all the lights with a trailer board and the trailer board is functioning properly and I have also tested the parking sensors and they are correctly disabled when I attach the trailer light board and I even get a picture of a trailer on the MMI display. So on the whole everything is working as it should.

I just cant get the status light on the handle in the boot to work though. I am sure there was an option in the coding somewhere to tell the car it had a lever mechanical swivel towbar when I looked in the past, but I cant for the life of me find it now?....

I have a feeling I'm missing some coding in the central electrics module but because the car is new there are no label files for the module yet.

Any thoughts?