Call me crazy, but I pulled the bumper off the Q5 again today to install an OEM hitch. It previously had a Drawtite hitch installed, with none of the electrics or the trailer control module. So much for the "towing package" it was advertised with.

I'm guessing it was installed for a bike rack or something but it was clearly never used.
Drawtite hitch pulled off.
OEM hitch standing by. (actually this one is for a Porche Macan (same thing))
Had to install the bracket and the trailer control module. Car is prewired, just didn't come with the tow package. Red plug is for the brake controller (aftermarket) up front to tie into the module. It runs up front to a plug under the dash for the brake controller. Black plug goes to the 7/4 pin harness.
Had to go into several modules using VCDS to recode them to recognize the now installed trailer control module. It interfaces with a lot of stuff. Engine, trans, stability, lights, and a few more things. Got everything coded in and the car is recognizing the module. Tested the 7 pin and everything works as it should.
And lastly, the tools used this time.
